About the role

Join the integrations team as a software engineer on the CoinLedger platform which currently processes hundreds of millions of transactions every year spread out across 300+ centralized exchange integrations. Supporting such a significant number of integrations is a large undertaking and will require working with large amounts of data and external APIs in order to maintain the quality ours users expect.

Your responsibility will involve collaborating with a team of 3-4 other software engineers to build brand-new integrations for the CoinLedger platform, improve the functionality of our existing integrations, and help the team operate more efficiently.

As your grow in the role and gain more experience, you will have the opportunity to work on some of the high-impact projects related to the import experience. In the near term, we have some of the following projects planned:

• Improving import infrastructure to enable real-time transaction syncing from crypto exchanges
• Building robust monitoring systems to react to breaking changes from crypto exchanges
• Building new workflows for enabling realtime balances to be fetched from crypto exchanges to assist users with reconciling their transaction history

This will be an extremely high impact, challenging role in a fast paced environment. However, you will have the opportunity to shape the direction and deliver high-impact changes within CoinLedger from the ground up.

We hope you are up for the challenge.

About you

• You are a crypto enthusiast and invest in crypto yourself
• You have a strong understanding of major centralized players in the crypto market and can prioritize accordingly in your integration work
• You have a passion for working with data: APIs, csv files, and excel spreadsheets should be very familiar to you
• You aren’t afraid of ing heads first into poorly documented APIs for crypto exchanges
• You have 1-3 years experience as a software engineer working on backend systems
• You have worked professionally on a C# / .NET codebase
• You are able to strike the balance between speed of delivery with quality of development
• You are comfortable working closely with members of our support team in order to help resolve issues and improve the import experience
• You have experience working with engineers at different levels and have coached them in their career development.

In the first month, you will:

• Work closely with the team lead to get onboarded into the CoinLedger engineering org
• Deliver multiple improvements and bug fixes to our existing integrations
• Build a new file-based integration for processing transaction history on a CSV/Excel file
• Identify and document areas of improvement in our existing processes.

Within the first 3 months, you will:

• Build and launch a new API-based integration with a crypto exchange
• Have shipped multiple high-impact improvements to our importers
• Become a pivotal player in the core integrations team.

What success looks like:

• You are diligent in your day to day work when processing transaction history for our users
• You are able to be self-accountable in a remote-work environment
• You are a self-starter and are able to jump into technical problems when they come-up
• You push the pace to improve
  • Development velocity of new integration launches
  • Time to recovery when integrations break
  • Development velocity on new features
• You help identify problem areas in our current process and implement improvements which will:
  • Make the import experience better for our customers
  • Make the development & debugging process better for the whole integrations team

"

Description

We’re looking for a Senior Full-Stack Ruby on Rails Engineer to lead development of our analytics dashboard. You’ll design, build, and maintain Rails APIs, background jobs, and database schemas that power data-rich React components and interfaces. You’ll work closely with product managers, designers, front-end developers, and infrastructure to rapidly push new features from ideation to production.

This is a hands-on role with plenty of scope to influence architecture, user experience, and coding standards. While we’re targeting senior engineers, we’re open to strong mid-level candidates who demonstrate leadership, ownership, and a passion for full-stack craftsmanship.

Team, Culture, and Product

We're a small engineering team looking to grow. We're a remote-only organization with most of the engineering team working from US timezones. We aim to help mobile app developers make data-driven decisions about their marketing in a secure, privacy-centric, user-friendly way. We encourage flexibility in working locations and hours but also make sure we all overlap at least briefly for a bit each day.

Responsibilities

* Lead major architecture and software design decisions

Requirements

* Deep expertise in Ruby on Rails (typically 5+ years)

Nice-to-haves

* Experience with AWS, Kubernetes, and Docker

Benefits

* Annual budget for learning and personal development (conferences, books, classes, etc)

",

Stripe is hiring a remote Staff Data Analyst. This is a full-time position that can be done remotely anywhere in Canada.

Stripe - Online payment processing for internet businesses.

Nava is hiring a remote Data Engineer (Analytics). This is a full-time position that can be done remotely anywhere in the United States.

Nava - Working with government agencies to improve their digital services.

Stitch Fix is hiring a remote Software Engineer, Inventory. This is a full-time position that can be done remotely anywhere in the United States.

Stitch Fix - Your online personal stylist.

Logos is a movement supporting the development of the decentralised web. Logos technologies lay the foundations for a freer internet upon which communities can evolve into network states. Each protocol in the Logos stack seeks to empower its users while upholding civil liberties and fundamental freedoms.

About Status Network

Status Network - the first natively gasless Ethereum L2 - is hiring a bilingual Developer Relations & Community Manager to lead our presence in South Korea.

Status Network’s roadmap includes deep integrations with Korean studios, gamers, and social apps builders. You will be the bridge between Status Network and the Korean builder community. This role is a unique blend of local developer community building, content creation, technical education, and strategic partnership management. The ideal candidate is a builder at heart, deeply embedded in Korea’s crypto scene, and driven by the mission to make developers discover a new way to build onchain - without gas.

Key responsibilities

• Launch, manage & moderate Korean-language channels (Telegram, Discord, KakaoTalk, Naver, Youtube, etc.)
• Design daily/weekly engagement loops; track sentiment & surface insights
• Produce Korean-first technical documentation, tutorials, code samples, blog posts, memes and “how-to” videos to make building on Status L2 intuitive and fun
• Run webinars, IRL meet-ups, hackathon tracks, and university workshops; report measurable impact (attendance, submissions, conversions)
• Onboard builders to Status L2; provide code samples and live demos
• Mentor power users and builders and KOLs; identify and amplify success stories
• Cultivate relationships with Korean web3 studios, infra providers, K-media, and event organisers
• Localise global campaigns (airdrops, quests, dev-grants) to maximise Korean participation
• Own community analytics (growth, retention, funnel KPIs) in GA / Dune / Notion
• Channel product pain-points and market trends back to engineering and leadership

You will ideally have

• Native-level Korean & professional English (written + spoken)
• 2+ yrs DevRel, developer education, or technical community building
• Hands-on coder - comfortable reading / shipping Solidity, TS or Rust and demoing live. Strong grasp of blockchain fundamentals, especially Layer 2 architectures.
• Ability to create content - we welcome all format but video will be prioritized
• Strong documentation and blog posts writing skills - able to review and suggest changes on existing documents
• Track record running ≥ 5 AMAs, hackathons, or workshops with published metrics
• Data-driven mindset; can design experiments and report RO
• Belief in open-source, self-custody, and cypherpunk ethos
• Experience in, and passion for, blockchain technology

Bonus points

• Proficiency in another Asian language
• Prior work at a rollup, DeFi, GameFi, or crypto infra project
• Existing network across builder communities at universities, Kakao, meetups, and indie hacker spaces
• Have an active YouTube or TikTok channel
• Have experience writing announcements, whitepapers, and legal-compliant materials for Korean audiences
• Public-speaking experience at conferences or YT/Twitch streams
• Familiarity with Ethereum L2s, RLN, zkEVMs, or onchain gaming UX
• Comfortable working remotely and asynchronously
• Experience working for an open source organisation.

[Don’t worry if you don’t meet all of these criteria, we’d still love to hear from you anyway if you think you’d be a great fit for this role. Just explain to us why in your cover letter].

Hiring process

• Interview with our People Ops team
• Community and ecosystem interview
• Technical interview and test
• Interview with the Status Network team lead

Compensation

The expected compensation range for this role is negotiable, dependent on how we assess your skills and experience throughout our interview process. We are happy to pay in any mix of fiat/crypto.

Pulumi is hiring a remote Principal Software Engineer - AI. This is a full-time position that can be done remotely anywhere in the United States.

Pulumi - Modern infrastructure as code.

vidIQ is hiring a remote Associate Product Engineer. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

vidIQ - Chrome extension for YouTube video creators.

Parity Technologies is looking to hire a Senior DevSecOps Engineer to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Sahara AI is looking to hire an AI DevRel Engineer to join their team. This is a full-time position that can be done remotely anywhere in the United States or on-site in San Francisco CA.

RevenueCat is hiring a remote Senior Backend Engineer, Web. This is a full-time position that can be done remotely anywhere in Americas or EMEA.

RevenueCat - The better way to build and manage subscription apps.

Zero Hash is looking to hire a Technical Project Manager to join their team. This is a full-time position that is remote or can be based in Melbourne.

At LaunchBrightly, we are on a mission to automate a process that continually captures and enhances screenshots of all your SaaS product features. The continuous integration and continuous deployment (CI/CD) pipeline and process that engineers adopted over the last decade, is what we ultimately want to build for customer support teams. TLDR; LaunchBrightly = Github Actions/Circle CI for customer support. And we are currently looking to bring onboard a strong Application Engineer. 

Everyone at LaunchBrightly is a creator, an owner, or perhaps better, a celebration of the crazy ones. The misfits. The rebels. Most big companies are afraid of entrusting the future of the company and their software to a few makers, and as they defend against that, they end up with three layers of managers and a product designed by a committee. We want the opposite. We need the opposite as we enter virgin territory trying to build that CI/CD pipeline and process for the support organization. As our customer pushes a new feature to production, we automatically update all product images within the help center. This is a thrilling adventure!

Our work is remote, not distant. We believe that being a remote-first organization allows us to build an exceptional team composed of makers and sellers with erse backgrounds and skill sets from around the globe. Our default work culture is asynchronous and emphasizes written communication to prioritize maker time, focus and company productivity. Our goal is not to eliminate face-to-face interaction, but we should default to a setting where written documentation is so strong that a meeting on most project subject matters would seem odd.  

Founded in 2022, and backed by prominent venture firms including IA Ventures, Tuesday Capital, and B Capital Group, this is a unique opportunity to join this band of misfits on the ground floor. As an early teammate you will be working intimately with the founding team, who has done 0 to 1 five times over while seeing four of them come to an exit.

The Application Engineer will become an integral member of an intimate 9-person team consisting of:

• Maker #7 (Application Engineer, You!)

• Maker #6 (Melissa, Implementation Specialist)

• Maker #5 (Michel, Frontend Engineer)

• Maker #4 (Lucas, Frontend Engineer)

• Maker #3 (Jose, Fullstack Engineer)

• Maker #2 (Hyder, Backend Engineer)

• Maker #1 (Dennis, Founder)

• Seller #1 (Josh, Co-founder)

• Helper #1 (Vibeke)

However, we are looking not just for an Engineer but, rather, a teammate we see as integral to LaunchBrightly’s long-term journey and vital to our success. Someone who is comfortable in the dark and who sees a certain romance, like we do, in embracing the unknowns that come with being on the startup journey. We have a track record of seeing those colleagues who join us on the ground floor of our ventures ride the startup journey to completion (exit) with us, as we grow and become successful together. This is something we take seriously, and something we are extremely proud of! 

Job Description

You'll work with Jose (and the remainder of the team) on the logic layer that powers our product: workflows, task runners, state machines, rules engines, and orchestration. You'll work in Typescript directly in the Vue App, and often in JS in AWS Lambda’s, tune our data models, and shape how primary product features like Audits function behind the scenes. You're not building APIs or UI — you're building the actual product behavior. Think of yourself as a Product Logic & State Orchestration Engineer. 

This is a hands-on role for an engineer who loves building reliable systems that model real-world processes. You’ll work on the internal state machines that govern how screenshots flow through the system, are transformed, enhanced, and delivered. You’ll define rules engines that let non-technical users control automated behavior, manage task orchestration across Lambda and queues, and shape our schema design to handle complex edge cases with clarity and performance in mind.

You’ll thrive in this role if you think deeply about how complex systems behave over time, have strong opinions on data modeling and event-driven workflows, and enjoy writing deterministic, testable, observable logic. If you care more about product behavior than presentation, and love turning business intent into robust execution — this is for you!

We are looking for previous experience working with

• Building production-grade B2B web apps, including everything that comes with robust, scalable software: business logic, testing, observability, and performance.

• Writing TypeScript in a modern frontend architecture (Vue 3 SPA) and JavaScript in AWS Lambda functions.

• Working deeply to create meaningful and maintainable test coverage across core business logic (e.g. Vitest).

• Designing and modeling robust data schemas for DynamoDB and GraphQL queries, with a strong intuition for how data shapes product behavior.

• Consuming and reviewing internal APIs using Postman, and contributing clear, actionable feedback to improve them.

• Implementing Serverless architecture with AWS Amplify, including event-driven flows and task orchestration.

• Having a good functional understanding of UI-layer concerns (HTML, DOM, TailwindCSS, HeadlessUI), but focusing your energy on what happens beneath the surface — the orchestration, rules, and workflows that make the app tick.

What you bring to the table

• Minimum of 3 years of industry experience

• A customer-first mentality, with an instinct to imagine how users will react and interact

• Strong and precise communication and documentation skills, with a will to understand and be understood

• Prides themselves on writing highly readable, thoroughly tested code

• The personal organization skills and patience to manage multiple contexts as projects and features come together. A good dev can do things like: juggle tickets and Git branches, keep zero inbox, write notes for themselves to keep their small tasks straight, whip up shell scripts/test data to automate repetitive tasks

• A passion for being part of the startup journey and taking ownership of the company’s success

• A willingness to take initiative and enthusiasm to make an impact and take action

• Thrives in a highly collaborative environment and enthusiasm for being a team player

Bonus point if you

• Built Apps on the AWS Amplify (Serverless Design) framework, which is the primary backdrop for our App.  

What we offer

• Flexible working hours and locations. Your success is measured on outcomes

• A culture of NO meetings where maker time and productivity is prioritized

• Excellent start-up culture with openness and inclusiveness

• True ownership and autonomy over your role and the impact on the company

• Prioritization of focus time and productivity 

• Your choice of technical setup and equipment

• Experienced founders with many years of successfully building product across multiple ventures

• Annual meetup as a team in New York City.

What to expect in the interview process

Given the remote nature of our work setting, one of the core principles for how we operate as a remote team is written communication. And we therefore run a slightly unique interview process that begins with an email-based exchange to learn more about your background, communication style and overall fit for the role.

• Stage 1: You’ll begin with an email conversation with our Co-founder, Josh Peacock, to get a sense of your technical background, written communication, and English proficiency.

• Stage 2:  Next, you'll have a follow-up email exchange with one of the Makers on our team on a set of more technical questions to get a deeper understanding of your technical knowledge and capabilities.

• Stage 3: We’ll then ask you to complete a short technical assignment to demonstrate your practical skills in action.

• Final stage: You’ll have two video calls—one with our Founder, Dennis Mortensen, and another with a Maker from the team to give us a chance to connect more personally and explore how you'd fit into the team.

Salary and compensation

About Us

Green Stuff World is a bootstrapped and profitable online hobby shop with over 10 years in the market and a team of ~80 staff. We’re growing fast, and our current tech stack can no longer keep up. That’s why we’ve been building a new 100% remote engineering team to modernize our platform.

Our backend is being rebuilt using C# on .NET 9. On the frontend, we use TypeScript with the Svelte framework to create fast, reliable web experiences that scale to high usage.

About You

We’re looking for an experienced, full-time Frontend Software Engineer to join our team. You should have a solid understanding of modern web technologies and a passion for designing and building user-facing features from the ground up.

Requirements

+ 4 years of experience building modern frontend applications with JavaScript, HTML, and Tailwind CSS

Nice to Have

Why Work With Us?

Salary

We offer between $30,000 and $40,000 USD annually, depending on experience.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🏖 Paid time off

👀 No monitoring system

🚫 No politics at work

🎅 We hire old (and young)

ModelVault is building the world’s first fully-integrated, on-prem AI appliance — a plug-and-play AI server preloaded with software, models, and tools that let businesses (and eventually consumers) run powerful AI models locally, privately, and securely.

We're looking for a Senior Software Engineer to help us build the core software stack that powers our on-prem systems — from model integration and system orchestration to user interfaces and remote updates. You’ll be a key technical partner in defining our architecture, tools, and technical culture from day one.

🚀 What You’ll Do

• Design and build the software stack that ships with ModelVault’s on-prem AI systems — everything from containerized inference engines to local dashboards and command-line tools.

• Set up and manage integration with modern LLMs and vision models (e.g. LLaMA, Mistral, SDXL), including support for fine-tuning and local deployment.

• Build and maintain user-facing tooling: CLIs, lightweight GUIs, and APIs that make the device intuitive for developers and AI teams.

• Make architecture decisions for system orchestration, hardware interfacing, remote update pipelines, and telemetry — all optimized for stability and security.

• Help set up GPU drivers, OS configuration (e.g., Ubuntu, NVIDIA stack), and optimized inference runtimes as needed.

• Collaborate with the founding team to test and iterate with early business customers.

• Contribute to hiring and scaling the engineering team over the next 12 months.

🧠 You Might Be a Fit If You

• Have 5+ years of software engineering experience, preferably at early-stage startups or in fast-paced environments.

• Are comfortable working across the stack — from OS-level setup and deployment to user-facing tools.

• Have experience with containerization, system packaging, deployment tooling, and managing model runtimes.

• Have worked with, or integrated, LLMs and ML models in real-world systems (e.g., inference, fine-tuning, embeddings).

• Can independently drive architecture decisions and own large pieces of product infrastructure.

• Thrive in ambiguity, learn fast, and are passionate about building great tools from scratch.

⭐️ Bonus Points

• Experience with GPU computing, NVIDIA drivers, CUDA, or model acceleration tools.

• Familiarity with ML tooling: vLLM, Ollama, Triton Inference Server, LangChain, etc.

• Comfort with Linux system internals, remote access tooling (e.g., SSH, Ansible), or auto-update agents.

• Previous experience with AI developer tooling, embedded systems, or secure local apps.

🌍 Why Join ModelVault?

• Help define a new category: secure, local AI for everyone — starting with businesses, expanding to the world.

• Work on real, shipped hardware + software that users will touch.

• Be part of the founding engineering team with high autonomy and deep ownership.

• Fully remote, async-friendly, with strong product velocity and clear vision.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🏖 Paid time off

📚 Learning budget

💰 Profit sharing

🚫 No politics at work

Axios is hiring a remote Senior Frontend Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Axios - Smart brevity worthy of people's time, attention and trust.

Tokemak is looking to hire a Web3 Junior Frontend Engineer to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

About the Codex Student Program

The Codex Student Program (CSP) is aimed at Bachelor, Master’s or PhD students looking to gain experience and do research and development in one of the domains of interest related to the Codex project. The grant is intended to help students gain visibility into their field of interest while also allowing them to learn about standard research and development practices that should be beneficial for their continuing careers.

Responsibilities

• Create engaging developer-focused content (blog posts, tutorials, social media)
• Build simple demonstrations and code examples showcasing our technology
• Assist with content strategy and identify topics that resonate with developers
• Help measure and track the impact of content initiatives
• Collaborate with product and engineering teams

Requirements

• Currently pursuing a degree in Computer Science or related field
• Basic coding experience, particularly in technologies we use in Codex
• Strong written and verbal communication skills
• Curious about decentralized technologies and storage solutions
• Ability to explain technical concepts clearly
• Self-motivated and comfortable working in an async, fast-paced environment

The Grant

The CSP is very flexible and adapts to different levels of experience and various lengths. The following numbers are just indicative, as the final stipend might slightly change depending on the student experience and to adapt to differing regions’ costs. For an officially enrolled PhD student, the CSP offers a stipend in the range of $2,000/month (full-time equivalent).

In addition, the CSP may offer mobility grants to attend meetings and related conferences within the scope of the internship’s research field.

Application

To submit your application, please fill out this form providing the following documents:

• Up-to-date Curriculum Vitae
• A cover letter expressing your research interests
• Proof of enrollment in your university
• Reference letter from one of your university professors
• Applications will be evaluated a few weeks after submission. Students passing the initial evaluation will be contacted to pass a short interview.

The fees, duration of the agreement, and deliverables shall be reviewed on a case-by-case basis and as set out in the contractor agreement to be signed by the student. Please consider that once you have signed the agreement, you must comply with the local regulations for the provision of the services that are applicable in your country of residence or nationality.

About Us

Re7 Capital is a London-based cryptoasset investment firm, leveraging our deep crypto network and proprietary data infrastructure to drive investment decisions across various DeFi and alpha strategies. Through Re7 Labs, we also collaborate with leading projects and blockchains to design DeFi ecosystems, provide on-chain risk curation, and deliver vault management services.

Our team combines expertise in investment management, data science, and crypto. To support our continued growth, we are seeking a motivated Full Stack Web Developer to join our engineering team. Reporting directly to the Head of Technology, you will take full ownership of our dApps, used to interact with our vault smart contracts.

Responsibilities

• Develop and maintain responsive, user-friendly front-end interfaces using React, Next.js, Vue or similar frameworks.
• Integrate EVM and non-EVM smart contracts using libraries like Ethers.js, Web3.js, Viem, Starknet.js and wallet connectors such as ConnectKit and wagmi.
• Support wallet integrations including MetaMask, Argent X, and Braavos.
• Design and implement scalable back-end services and APIs using Node.js, Express, and related technologies.
• Collaborate with blockchain engineers to interact with smart contracts and on-chain data.
• Implement best practices for security, including wallet connectivity, transaction handling, and protection of user data.
• Deploy and maintain applications on AWS (EC2, Elastic Beanstalk, S3, CloudFront), with a focus on scalability, logging, and monitoring.
• Set up and manage CI/CD pipelines using GitHub Actions or similar tools to automate testing and deployment workflows.
• Deploy applications to decentralized hosting environments (e.g., IPFS, Fleek) as well as cloud-based infrastructure.
• Ensure performance optimization through CloudFront caching, invalidation strategies, and SSL/TLS management.
• Contribute to Whisk infrastructure and security, ensuring resilient and secure production deployments.
• Work closely with designers, PMs, and cross-functional teams to define and deliver new DeFi features and enhancements.
• Implement and maintain interactive UI elements and animations using modern HTML/CSS (including transitions, keyframes, and responsive styling) within PHP-based web applications.

Requirements

• Proficiency in JavaScript/TypeScript and PHP.
• 5+ years of experience in web development, including 3+ years in dApp development.
• Hands-on experience integrating and interacting with both EVM and Non-EVM smart contracts.
• Familiarity with ConnectKit, wagmi, and Viem libraries for modern wallet connection flows.
• Experience deploying web applications on AWS using services like Elastic Beanstalk, EC2, and S3, with understanding of environment config, auto-scaling, and CloudWatch logging.
• Proficient in setting up CI/CD pipelines using GitHub Actions (or similar tools), including artifact packaging and automated deployment.
• Working knowledge of CloudFront, CDN behavior, cache invalidation, and AWS Certificate Manager.
• Familiarity with IAM roles, security groups, VPC setup, and cloud infrastructure security best practices.
• Experience with front-end frameworks (React, Next.js, Vue, etc.)
• Comfortable working in Linux environments and using Git for version control.
• Understanding of DeFi concepts and major protocols (e.g., Uniswap, Aave, Curve).
• Awareness of and ability to support Whisk infrastructure and security requirements.
• Basic knowledge of HTML5, CSS3, and animation techniques (e.g., transitions, keyframes, scroll-triggered effects), with the ability to integrate them into PHP-rendered views or templating engines.

Benefits

• A dynamic, collaborative, and highly technical work environment.
• Opportunities for professional growth in a rapidly evolving industry.
• Remote-first setup with regular opportunities to meet the team in person.
• Competitive compensation package.

Application Process

Please submit the following:

• Your resume
• A cover letter explaining your interest in the role
• Your response to the following technical challenge:
• Challenge: Describe a high-level architecture and solution for a dApp that supports both EVM and non-EVM wallets (e.g., MetaMask and Braavos). Include considerations for wallet detection, abstraction, and secure transaction signing.

Circle is looking to hire a Lead Analyst, Third Party Security to join their team. This is a full-time position that can be done remotely anywhere in the United States.

Espresso Systems is looking to hire a Developer Relations Lead to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Exodus is looking to hire a QA Analyst to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

GitLab is hiring a remote Support Engineer (Sunday Coverage - AMER). This is a full-time position that can be done remotely anywhere in Americas.

GitLab - A single application for the entire DevOps lifecycle.

About the Codex Student Program

The Codex Student Program (CSP) is aimed at Bachelor, Master’s or PhD students looking to gain experience and do research and development in one of the domains of interest related to the Codex project. The grant is intended to help students gain visibility into their field of interest while also allowing them to learn about standard research and development practices that should be beneficial for their continuing careers.

Responsibilities

• Help increase awareness of Codex & its tech stack
• Create sample applications and code examples
• Support developers through forums, documentation, and direct engagement
• Gather feedback from the developer community to improve our platform
• Represent our project at virtual events, hackathons or university gatherings
• Seek opportunities to organise Codex developer meetups and coding challenges

Requirements

• Currently pursuing a degree in Computer Science or related field
• Comfortable with public speaking and technical demonstrations
• Basic understanding of decentralized technologies
• Enthusiasm for engaging with developer communities
• Strong problem-solving skills
• Interest in building your personal brand within the tech ecosystem

The Grant

The CSP is very flexible and adapts to different levels of experience and various lengths. The following numbers are just indicative, as the final stipend might slightly change depending on the student experience and to adapt to differing regions’ costs. For an officially enrolled PhD student, the CSP offers a stipend in the range of $2,000/month (full-time equivalent).

In addition, the CSP may offer mobility grants to attend meetings and related conferences within the scope of the internship’s research field.

Application

To submit your application, please fill out this form providing the following documents:

• Up-to-date Curriculum Vitae
• A cover letter expressing your research interests
• Proof of enrollment in your university
• Reference letter from one of your university professors
• Applications will be evaluated a few weeks after submission. Students passing the initial evaluation will be contacted to pass a short interview.

The fees, duration of the agreement, and deliverables shall be reviewed on a case-by-case basis and as set out in the contractor agreement to be signed by the student. Please consider that once you have signed the agreement, you must comply with the local regulations for the provision of the services that are applicable in your country of residence or nationality.

Mural is hiring a remote Senior Software Engineer, eCommerce. This is a full-time position that can be done remotely anywhere in Argentina.

Mural - Online brainstorming, synthesis and collaboration.

Serokell is a fast-growing, fully remote software development company that works on innovative solutions for complex problems. We’re packed full of adventurous, curious, and inclusive folks who want to build cutting-edge software with modern technologies like functional programming.

This position is open now with a July start. This is a project-based hire with the option to extend if it is a good match. Submit your CV and we’ll reach out promptly.

We’re seeking a middle to senior level Solidity Developer to join a team of fierce and fun Serokellers.

Hiring Process Overview: We invite candidates to the HR screening as the first step. Next, we conduct a technical interview with those whose profiles align with our requirements. Successful candidates will receive an offer.

Requirements:

• Fluency with Ethereum or another EVM-based blockchain ecosystem
• 2+ years in software development
• 1+ years experience writing, testing, and deploying Solidity contracts
• Hands-on experience with Hardhat, Foundry, Truffle, or Remix for development, testing, and debugging, including transaction submission, data retrieval, and key management
• Understanding of security issues and best practices for Ethereum and De-Fi applications
• Knowledge of popular token standards such as ERC-20, ERC-721, and ERC-1155
• Experience developing and integrating decentralized applications, both backend and frontend
• Basic understanding of cryptography primitives: public/private keys, signing, encryption, hashing
• Knowledge of fundamental algorithms and data structures like hash tables, binary search trees, DFS, quicksort
• Strong coding practices, including clean code structure, use of git, pull requests, and code review
• Fluent English, strong communication and collaboration skills
• Comfortable with daily stand-ups and asynchronous updates
• Self-driven, proactive, teamwork-oriented, curious and inclusive mindset
• Full-time commitment, around 140–160 hours per month
• Comfortable overlapping with team time zones from UTC 0 to UTC -8

It will be a significant plus if you have:

• Knowledge of TypeScript, Haskell, Rust, or OCaml
• Experience conducting security audits and identifying vulnerabilities
• Understanding of computer networks, HTTP, TCP/IP stack, and data synchronization models used in modern service APIs
• Familiarity with build/deploy automation tools and CI/CD systems such as Docker, Nix, Kubernetes

Responsibilities:

• Create and implement secure and efficient Solidity contracts, ensuring scalability, reliability, and maintainability
• Integrate contracts with EVM blockchain networks, often involving backend or frontend work
• Review and audit code
• Develop and execute unit tests, integration tests, and end-to-end tests
• Write detailed documentation for code, including design specs, user guides, and API documentation
• Stay updated on the latest developments in Solidity, Ethereum, and EVM-related technologies, cryptographic methods, and relevant programming languages
• Optimize code performance and gas efficiency
• Implement and enforce security best practices to protect contracts from common vulnerabilities
• Provide ongoing support and maintenance for deployed applications, addressing user-reported issues and bugs

We offer:

• Competitive salary.
• Engaging international projects.
• Participation in leading global conferences.
• International and multicultural teams.
• Fully remote work with flexible hours.
• Ability to take time off as needed.
• Investment in career and professional growth, with potential for wage increases.
• Mentoring and training programs.
• Opportunity to contribute to a leading functional programming blog.
• Therapy sessions for well-being support.

By joining Serokell, you’ll become part of a warm community of ingenious engineers, computer scientists, designers, marketing experts, and other inventive minds. You’ll work on ambitious projects building the next generation of computer software, explore creative initiatives unhindered by bureaucracy, and enjoy our vibrant Slack channels—ranging from #music to #philosophyandtears (did we mention the massive custom emoji set?).

Stay in the loop.

Follow @raikucom on Twitter for product updates, engineering deep es, and a closer look at how we’re building the future of blockspace.

About Raiku

Raiku is reengineering blockchain infrastructure from first principles to make global digital markets as precise and dependable as physical systems. Built on Solana, our platform delivers deterministic execution, guaranteed inclusion, and low-latency performance—solving the foundational failures that cause transactions to miss, trades to revert, and systems to collapse under pressure. By placing high-performance compute close to where transactions happen and coordinating execution through our advanced scheduling engine, Raiku empowers developers to build scalable, high-performance applications—and gives institutions the reliability and control they demand. We believe financial infrastructure should behave like physics: fast, reliable, and predictable—every time, without exception.

Research Engineer (Solana/Rust)

We’re seeking a passionate Research Engineer to drive protocol-level innovation on Solana. As the ideal candidate, you’ll combine deep technical expertise with scientific curiosity to:

• Lead technical discovery initiatives focused on Solana’s runtime, consensus, scheduler, and networking layers
• Conduct performance modeling and develop validator-centric architecture solutions
• Identify and address complex edge cases in transaction handling across production environments
• Translate research findings into actionable protocol design improvements

You’ll collaborate directly with our CEO, CTO (your manager), protocol architects, and key Solana ecosystem contributors to shape validator economics and transaction lifecycle guarantees across the Raiku stack.

Key Responsibilities

• Analyze and model Solana’s core architecture — deeply understand and document Solana’s runtime, scheduler, consensus, Turbine/Gossip, and transaction pipeline, with emphasis on edge cases under network stress or validator misbehavior.
• Lead internal research on validator economics and incentive alignment — explore impacts of Raiku’s slot marketplace, Ahead-of-Time (AOT) block auctions, and inclusion guarantees on validator profitability and slashing risks (e.g. under SIMDs 0096, 0123, 0212, 0228).
• Design bandwidth and blockspace pricing models — define and simulate pricing mechanisms for Raiku’s primary and secondary slot markets, ensuring validator rewards and application inclusion needs are economically aligned.
• Prototype system-level experiments across the Raiku and Solana stack — evaluate performance, liveness, and correctness when integrating Raiku’s ackermann-node and sidecar into Solana validator clients (e.g. Agave, Jito).
• Develop proofs-of-concept for transaction lifecycle primitives — such as pre-confirmations, slot reservations, and proof streaming for large bundled state transitions.
• Research and benchmark global account models — test interaction models across multiple VMs (e.g. SVM, EVM, MOVE) and assess state determinism and composability in high-throughput environments.
• Contribute to the design of Raiku’s protocol-level mechanisms — including builder commitments, proposer formats, MEV mitigation strategies, and slot slashing logic under failure modes.
• Author technical deep es, simulations, and RFCs — serve as a knowledge base for both internal and external stakeholders across Raiku’s validator, capital, and app layers along with wider engineering and marketing teams.
• Collaborate with external researchers and validators — especially those running testnet sidecars or participating in bandwidth resale to ensure safe and performant mainnet integration.

Preferred Qualifications

• Technical background with strong system-level experience
• Proven open-source engineering background, evidenced by contributions to major blockchain or distributed systems repositories — ideally within the Solana ecosystem.
• Involvement in protocol research, MEV, performance tuning, or client implementations
• Experience designing proofs-of-concept for novel execution or slot-inclusion logic
• Familiarity with zero-knowledge proof systems and state settlement patterns
• Active presence in relevant research circles, Discords, or open-source forums

What We’re Looking For

• 3+ years of experience working with Rust in production (preferably in core systems or blockchain contexts)
• Deep familiarity with Solana’s source code and protocol-level architecture (runtime, scheduler, consensus, networking)
• Demonstrated ability to reason through complex distributed systems
• Experience modeling and explaining performance bottlenecks in real-world validators
• Ability to read protocol proposals and specs and convert them into actionables (e.g. implementation paths, test harnesses, edge case coverage)
• A deep design philosophy focused on deterministic execution and reliable system behavior
• Strong communication skills and clarity in technical writing

What We Offer

• A chance to join a category-defining protocol team pushing the frontier of Solana infrastructure
• Token upside and a key role in shaping Raiku’s ecosystem footprint
• Remote-first team with async workflows, a high ownership culture, and deep technical curiosity
• Competitive salary, token allocation, and performance-based bonuses
• Budget for travel, ecosystem events, and home office setup

Airtable is hiring a remote Developer Support Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Airtable - Build powerful work apps, without coding.

Gnosis is looking to hire a Summer Internship (Ethereum Ecosystem) to join their team. This is an internship position that can be done remotely anywhere in EU or India time zone +/- 3 hours.

🚀 About Orga AI

Orga AI, headquartered in Palma de Mallorca, builds real-time AI systems that see, listen, and speak. Our mission is to enable people to interact with technology in a fluid and natural way through the multimodality of AI.

🛠️ Responsibilities

• Design and optimize Python 3.11 / FastAPI / asyncio-based APIs and microservices powering our SDK and TTS engine.

• Integrate and scale audio-video components (WebRTC, WebSockets) to maintain latency below 300 ms.

• Implement secure and scalable architectures in AWS EKS + Fargate, using IaC (Terraform) and CI/CD (GitHub Actions).

• Ensure observability with Prometheus/Grafana and maintain defined SLOs.

• Collaborate with the MERN and DevOps teams for efficient continuous deployments.

• Mentor junior team members and participate in code reviews with a focus on best practices.

🎯 Requirements

• 5+ years of experience building production-grade backends with Python.

• Expertise in concurrency and high-performance systems (asyncio, multiprocessing, profiling).

• Professional English proficiency and time zone overlap within CET ± 2 hours.

✨ Nice to Have

• Experience with audio/video streaming or TTS.

• Work with LLMs, PyTorch, Transformers, or ONNX Runtime.

• Knowledge of Rust or Go for high-performance paths.

• Experience leading end-to-end features in fast-paced environments.

🌍 What We Offer

• 100% remote contract, flexible schedule focused on outcomes.

• Multidisciplinary team and a culture of continuous feedback.

📜 Selection Process

• Interview (40 min)

• Technical Deep-Dive (90 min) – Pairing with the CTO

• Cultural Fit & Roadmap (45 min) – Chat with the CEO and Co-CEO

  All steps are completed within ≤ 7 days from the initial interview.

🚀 We’re Not Your Typical Startup

Orga AI is a startup founded by Marc Revert (CEO), a 17-year-old entrepreneur, and Julio Roldán (Co-CEO), a seasoned professional with over 30 years of experience. Our international team of 18 members spans the US, Japan, Argentina, Spain, and France.

Salary and compensation

Benefits

🌎 Distributed team

💰 Equity compensation

🎅 We hire old (and young)

Sahara AI is looking to hire a ML Research Intern to join their team. This is an internship position that can be done remotely anywhere in the United States.

About Us

Role Overview

What You’ll Do

• Build and maintain the Interviews Chat mobile app using React Native.
• Collaborate with the existing team to bring Interview Copilot and Interview Prep to mobile.
• Implement smooth, native-feeling UI and seamless integration with backend APIs.
• Optimize performance for both iOS and Android platforms.
• Handle edge cases around audio, permissions, and background activity (e.g. for meeting-based interviews).
• Test, debug, and iterate quickly based on user feedback.

What We’re Looking For

• 3+ years of experience building mobile apps with React Native.
• Strong command of JavaScript/TypeScript, React, and mobile performance optimization.
• Familiarity with mobile-specific challenges: push notifications, audio access, app permissions, App Store / Play Store submission.
• Experience integrating REST or GraphQL APIs.
• Ability to work independently in a fast-paced remote environment.
• Bonus: experience with speech-to-text, OpenAI, or real-time data handling.
• Bonus: previous work on tools or products related to productivity, video/audio communication, or AI.

Why Join Us?

• Work remotely from anywhere in the world.
• Be the lead mobile developer on a growing product with real impact.
• Shape the future of a tool that helps people land jobs and level up their careers.
• Collaborate with a highly technical, no-fluff team.
• Flexible working hours and competitive compensation.

About the Process

We keep it simple and fast. If your profile looks like a match, we’ll reach out for a quick chat. No take-home tests, just real discussion and code if needed.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🏖 Paid time off

⬜️ No whiteboard interview

🚫 No politics at work

🎅 We hire old (and young)

Jump | Software Engineer Full-Time (Contractor) | Global Remote

Who are we?

Hi! We’re jumpapp.com and we’re looking for contract software engineers. Our startup is moving fast, our customers love us, and we have an incredible team of people who are collaborative and deeply care about what we’re building!

If you don't have experience with everything in our tech stack still apply! We are willing to teach the right candidates and get them up to speed. Our tech stack is Elixir, Liveview, Postgres, Github, k8s & Terraform on Google Cloud.

What is the job?

This role pays $30-$70/hr and is for global software engineering contractors.

You can work any hours from anywhere. Our code is clean, well tested, well architected and fun to work in. You’ll love how quickly you can ship stuff!

What is the hiring process?

We have a 3 step hiring process and it takes about a week.

First, we’ll send a screening test where you’ll have 30 minutes to record your screen building a simple app.

Second, you’ll have 48 hours to build a real feature (as your own app) that we actually need. Anyone who successfully completes this challenge before the deadline will be paid $3,000. It must be a complete deployed & working app with all requirements met perfectly. If hired your first task will be to use your code to finish building the feature.

Finally, if your code looks good, our final step is a short chat with our CTO.

You can and should use AI to help you create this app. We are all in on the use AI and want someone who can make the most of it!

Stats on that paid project:

140 people were invited to the screening test

10 people successfully completed the screening test.

7 people submitted a project.

4 people earned $3,000 for a perfect working app

2 people were hired full-time

We’ve done 7 rounds and each person we’ve hired has been truly amazing. We look forward to finding the next!

Our Culture

We have a rigorous hiring process yet a kind and encouraging culture. We hire for a mix of experience, aptitude & attitude. We are a family-first company (13 kids among the founders), so we work smart and hard but not round the clock at the expense of family.

Other info:

• We buy the subscriptions you need (Cursor.ai, ChatGPT, etc)

• We’re a small and efficient dev team

• We’re growing gangbusters. All revenue-backed, super low churn.

• Raised a $20M Series-A a few months ago

• $30-$70/hour depending on experience

• HQ based in SLC, Utah

• You can work any hours from anywhere

Salary and compensation

"

Why you should consider joining:

About Reacher: We're the #1 TikTok Shop partner helping brands like Under Armour, Hanes, HeyDude, and Logitech scale their affiliate marketing. We've crossed 7 figures in ARR and are looking to raise a seed round and double our team by this year.

Our vision is to become the Hubspot for creator marketing, powering brands and creators to connect and grow across all commerce platforms like Youtube Shopping, Instagram Shopping, Shopify, and Amazon. Reacher will be a key infrastructure component of the creator economy.

Personally, I find the space and our company exciting because we have the opportunity to implement AI for the creator economy with the largest brands and creators in the world.

Your work will directly impact users on day 1. We have a highly responsive user base that depends on our product day in and day out.

What you'll do:

* Own and lead product features end-to-end: research, design, implement, test, and ship.

Work with a high sense of urgency – we ship fast and learn fast.

You're a fit if:

* You've got 2–5 years of professional experience, ideally at a product-first company or FAANG-level environment (SDE-2 level ownership expected).

Bonus points if:

* You've worked in an early-stage startup or been a first hire before.

Why join us:

* We're post-revenue and solving real problems for real customers.

To apply:

Send me a short note about something you've built and why this role excites you. A GitHub/LinkedIn/resume is great, but we care more about how you think and build.

",

Eight Sleep is hiring a remote Senior Backend Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Eight Sleep - The sleep fitness company.

MongoDB is hiring a remote Senior AI Engineer, Code Generation. This is a full-time position that can be done remotely anywhere in the United States.

MongoDB - The database for modern applications.

Customer.io is hiring a remote Senior Frontend Engineer. This is a full-time position that can be done remotely anywhere in Americas.

Customer.io - Power automated communication that people like to receive.

Role Intro

Ethereal is DeFi’s next major trading protocol and the first built on Ethena. Recently launching Testnet, we’re at $700M+ TVL on track to become a top 10 ecosystem. This is a rare opportunity to join a world class DeFi team.

We’re building a Perps DEX, which will handle over 1 million orders per second delivering CEX level performance, with on-chain security.

You’ll be part of an engineering-first team solving deep, complex problems that haven’t been tackled before. If you thrive in an environment about optimisation, distributed systems, and real-time performance at scale, this is your kind of challenge.

This is a remote team who work within AEST, strong preference for AU/NZ location, but all applications must be from timezones within GMT +7 and GMT+13.

About the Role

We’re hiring a Senior Backend Engineer to help design and optimise the core infrastructure across both an on/off chain EVM/Typescript architecture. You’ll be working on high-throughput systems that redefine execution speed and efficiency in DeFi.

What You’ll Be Doing

• Designing and implementing scalable, distributed backend systems to handle millions of orders per second.
• Optimising for latency and performance
• Working with event-driven architectures, real-time data pipelines, and high-throughput APIs.
• Collaborating with front end and protocol engineers to build an entirely new class of DeFi trading infrastructure.
• Ensuring fault tolerance, efficiency, and security across the platform.

What We’re Looking For

Essential Skills:

• Strong experience in backend development using Node.js & TypeScript building applications that have proven to scale
• Deep understanding of and experience with distributed systems - scalability, high availability, and performance tuning.
• Strong experience with CI/CD, AWS.
• Experience building or contributing to production DeFi or web3 projects.

Highly desirable:

• Prior work with real-time trading systems or large-scale on-chain applications
• Solidity/smart contract knowledge is not essential but a bonus.

Why Join Us?

• Fully remote (AEST ± 3 hours)
• Get paid on-chain (USD stables)
• Work alongside world-class engineers building core DeFi infrastructure
• Get early ownership in a protocol with $700M+ TVL and serious momentum
• Solve complex, technical problems with real user impact
• No politics - just sharp, curious engineers delivering fast

If you’re passionate about building the future of DeFi, let’s chat.

💡 We are seeking a Senior Fullstack Developer with a strong backend focus to join our core team. This hands-on role is ideal for candidates who take full ownership of their work and are passionate about building scalable, high-impact iGaming solutions. You will drive the development of partner integrations, backoffice tools, and APIs, while collaborating closely with other experts to deliver robust, AI-powered features. 💡

Key Requirements

• Significant experience in fullstack development, with a strong focus on backend systems
• Recent hands-on experience in high-load, successful product teams (iGaming or similar domains preferred)
• Demonstrated proficiency in AI engineering practices (must-have)
• High level of ownership and initiative in driving projects from concept to delivery

Tech Stack

• Node.js (primary backend)
• React (frontend)

Responsibilities

• Lead the development and integration of partner systems
• Build and maintain backoffice tools for internal operations and analytics
• Design, implement, and optimize APIs for internal and external use
• Provide ad-hoc technical support and solutions for evolving business needs
• Collaborate with cross-functional teams to deliver AI-driven features and enhancements
• Ensure scalability, security, and performance across all systems

What We Offer

• The opportunity to shape the future of iGaming with innovative, high-impact products
• Work in a high-ownership, expert-driven environment alongside industry leaders
• Competitive compensation and long-term growth potential

If you are a skilled fullstack developer with a backend mindset, strong AI expertise, and a passion for building next-gen gaming infrastructure, we want to hear from you.

Salary and compensation

Benefits

🌎 Distributed team

🏖 Paid time off

👀 No monitoring system

🚫 No politics at work

🎅 We hire old (and young)

Boulevard is hiring a remote Director of Engineering (Data). This is a full-time position that can be done remotely anywhere in Canada or the United States.

Boulevard - Software for self-care.

Sourcegraph is hiring a remote Senior Support Engineer - US West [IC3]. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Sourcegraph - Advanced code search.

About Us

Raiku is reengineering blockchain infrastructure from first principles to make global digital markets as precise and dependable as physical systems. Built on Solana, our platform delivers deterministic execution, guaranteed inclusion, and low-latency performance—solving the foundational failures that cause transactions to miss, trades to revert, and systems to collapse under pressure. By placing high-performance compute close to where transactions happen and coordinating execution through our advanced scheduling engine, Raiku empowers developers to build scalable, high-performance applications—and gives institutions the reliability and control they demand. We believe financial infrastructure should behave like physics: fast, reliable, and predictable—every time, without exception.

About the Role

As a Protocol Research Specialist at Raiku, you will be at the forefront of protocol research and development, bridging the gap between technical innovation and market implementation. You’ll be crucial in monitoring and influencing protocol developments while translating complex technical capabilities into compelling use cases for our target markets. This position requires a unique blend of technical expertise, market understanding, and communication skills.

Core Responsibilities

Protocol Research & Development

• Monitor and analyse Solana protocol changes (SIMDs) and their impact on Raiku’s infrastructure
• Drive Raiku’s protocol development by drafting and advocating for strategic SIMDs
• Host technical workshops with the team on relevant SIMDs and architectural changes to the network.

Product & Commercial

• Create technical use cases and system diagrams showcasing Raiku’s infrastructure capabilities.
• Support commercial discussions with partners and clients
• Transform technical capabilities into clear value propositions for target sectors
• Bridge the gap between technical capabilities and commercial opportunities

Technical Communication & Writing

• Produce technically accurate content for marketing and educational purposes.
• Represent Raiku in technical discussions across public forums
• Collaborate with the team on technical documentation and presentations
• Contribute to the company’s thought leadership in the Solana ecosystem

What You’ll Bring

• Bachelor’s degree or higher in Computer Science, Engineering, or related technical field
• Proven track record of writing in-depth technical articles mainly focused on blockchain protocol architecture and improvement proposals
• Ability to effectively bridge business requirements with technical specifications
• Deep understanding of blockchain protocols, particularly Solana’s architecture and ecosystem
• Experience with protocol development and improvement proposals
• Outstanding technical writing and documentation skills
• Proven ability to translate complex technical concepts into clear, business-focused use cases
• Excellent communication skills for both technical and non-technical audiences
• Track record of working independently while collaborating effectively with cross-functional teams

Preferred Qualifications

• Strong stakeholder management skills with experience in client-facing roles
• Familiarity with Solana’s governance and improvement proposal process
• Experience in product development or technical sales
• Active participation in blockchain technical communities

Benefits

• Opportunity to shape the future of Solana’s infrastructure
• Competitive compensation package, including token allocation
• Remote-first work environment
• A one-off allowance upon joining to set up a home office
• Professional development opportunities
• Chance to work with cutting-edge technology and world-class engineers

GitLab is hiring a remote Assigned Support Engineer / Senior Support Engineer (EMEA). This is a full-time position that can be done remotely anywhere in EMEA.

GitLab - A single application for the entire DevOps lifecycle.

"

We are looking for a Founding Engineer to join us in laying the foundation for the technical infrastructure of Bloom. Depending on the fit, you may become our CTO. You'll be shaping the future of our company and our vision of unlocking the creator economy for software.

Bloom is a YC X25 startup making app development as easy as talking into your phone, watch our pre-seed fundraise announcement here

Core traits about you:

* Your eyes light up when you think about coding on Sunday morning

Bonus points:

* You have worked with (coding) agents extensively* RAG

Open problems:

* Build a reliable/world-class coding agent that builds full-stack apps* How do we imbue design taste?

How to apply

* Proof of meeting the Core Traits

",

"

We’re building an autonomous engine for scientific discovery—an AI system that designs, plans, and learns how to learn. This role is for exceptional people who want to invent a better way to optimize products and generalize models over complex search spaces using reinforcement learning, Bayesian methods, and active experimentation.

You’ll be part of the core research team. No side projects. No throwaway intern work. You’ll be expected to think deeply, write clean code, and help us push the theoretical and practical boundaries of intelligent discovery systems.

What You’ll Work On

* Designing and implementing the core decision-making framework.  

Qualifications

* Strong mathematical foundation, with emphasis on probability theory, information theory, and optimization.

Bonus:

* Experience with BoTorch, GPyTorch, Pyro, Stan, or JAX.

",

GitLab is hiring a remote Developer Advocate. This is a full-time position that can be done remotely anywhere in North America.

GitLab - A single application for the entire DevOps lifecycle.

Wikimedia Foundation is hiring a remote Senior Site Reliability Engineer. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Wikimedia Foundation - The non-profit that operates Wikipedia.

CrazyGames.com is an HTML5 browser games platform with 40M monthly active users from countries around the world. In just a few years, we’ve grown from a hobby project to a team of 35 experts. CrazyGames is now expanding its reach and looking for a remote Mobile App Developer.

You will be working in a small, fully remote engineering team where you will build and enhance our mobile applications for both iOS and Android. CrazyGames is already used by millions of users daily, providing a massive audience for your work from day one. While skills across both platforms are valued, we are particularly seeking strong iOS expertise to complement our team’s current capabilities.

Key outcomes for the role:

• Within 1 month, you have a good understanding of the current architecture of the website and successfully built and shipped native features or enhancements within our mobile apps.
• Within 3 months, you have proactively identified and implemented a tangible improvement to mobile build pipelines, automated testing and development workflow, demonstrably saving time or reducing friction for the mobile development process.
• Within 6 months, you take ownership over significant mobile app features or modules (especially iOS-centric ones), managing them from scoping through development, testing, and release.
• Within 9 months, you propose architectural improvements to our mobile app codebase or the web-native integration layer, enhancing maintainability, performance, and future feature development.

On a typical day you might:

• Implement and refine both native and web UI elements and interactions based on designs for our iOS and Android apps.
• Develop and integrate native functionalities (e.g., push notifications, platform-specific APIs) that enhance the core PWA experience.
• Work on the bridge and communication layer between the web view and the native app shell.
• Propose and discuss mobile-specific user experiences and native integrations together with the designer, and product manager.
• Identify performance bottlenecks or areas for improvement in the mobile apps and refactor code or implement native solutions.
• Break down mobile-focused features or epics into specific tasks and discuss implementation strategies, especially for iOS, with the tech lead and team.

What we offer:

• Top-notch engineers as colleagues. We like to hire experts.
• A modern mobile development environment leveraging web technologies combined with native development (Swift for iOS, Kotlin for Android). Experience with bridging technologies is a plus.
• Your work directly impacts millions of users across the globe playing hundreds of millions of game sessions per month.
• A lot of responsibility and freedom. We hire only experts and trust them to deliver excellent results.
• Flexible working hours and location. The results are what count!
• Team weeks: we organize a week somewhere in Europe once or twice per year. We pay for transport and accommodation so you can have fun with the team.
• The opportunity to play games and claim it’s work.

Job requirements

Reach out if:

• You have demonstrable experience developing native mobile applications, with a strong focus and deep understanding of iOS development (Swift/Objective-C and core iOS frameworks). Experience with Android (Kotlin/Java) is a significant plus.
• You have experience with or are eager to learn more about React web development.
• You have experience working with or integrating web views (WKWebView/WebView) or PWAs within native mobile applications.
• You have experience optimizing mobile applications for responsiveness, and smooth user experience across various iOS devices and versions.
• You can think from the perspective of the mobile user and understand platform conventions.
• You have experience interpreting mobile analytics to drive development choices.
• You are intelligent, efficient, and organized. You have an attention to detail.
• You like open, efficient, and to-the-point communication and you have experience working effectively in a remote team.
• Bonus points for experience with web-to-native bridging technologies (like Capacitor or custom implementations) or cross-platform frameworks (like React Native, Flutter) even if not directly used here.

P2P.org is the largest institutional staking provider with a TVL of over $6B and a market share exceeding 20% in restaking.

We are continually focused on researching and improving our infrastructure to extract maximum APR while enhancing security. For instance, in ETH and SOL, our NRR is on average 10% higher than the market, and in DOT, it’s 20% higher.

We also place significant focus and resources on launching new networks such as TON, Avail, Monad, Babylon, Story, Berachain, and others, along with yield products. From restaking, where we are the largest operator with a 20+% market share, to yield aggregators on stablecoins.

Our clients include BitGo, Copper, Crypto.com, Ledger, ByBit, Bitget, OKX, HTX, Bitvavo, SBI, and others, who choose us for our client-centric approach and extensive product line from unified API to widgets and custom dApps.

We are also actively expanding our product line, exploring RWA, data, yield, and service products for banks, exchanges, custodians, and wallets.

P2P.org unites talented iniduals globally ❤️

Despite our distributed team, we share a passion for decentralized finance - a fairer system for all. We code, learn, create, and connect to shape finance’s future 💰

P2P.org boasts a strong reputation and network. We prioritize customer satisfaction and, as tech enthusiasts, develop innovative solutions that bolster our brand.

You will 🚀

• Serve as the technical advisor for our institutional clients during sales and onboarding
• Conduct technical discovery and design tailored solutions using our staking APIs, SDKs, and platform tools
• Deliver live product demos, technical workshops, and architectural consultations
• Work cross-functionally with Engineering and Product to support complex integration flows
• Maintain technical documentation, integration playbooks, and POCs to accelerate time-to-market
• Translate customer feedback into actionable product insights
• Build trust and long-term relationships with key stakeholders (Product Managers, Technical Leaders, CTO)

You have 🤓

• Proficient in both written and spoken English and Mandarin
• 4+ years of experience as a Sales Engineer, Technical Lead, Engineering Manager, or similar technical client-facing role
• Strong communication skills with the ability to engage both technical and non-technical stakeholders
• Solid experience with APIs, Postman, SDKs, and scripting in TypeScript, JavaScript, or Python
• Experience preparing and delivering architecture diagrams, implementation proposals, and live demos
• A proactive, problem-solving mindset and the ability to take ownership of complex projects

Nice to have

• Blockchain, staking, or Web3 experience
• Familiarity with yield products, wallet integrations, or RWA concepts
• Experience with institutional custody flows and HSM integrations
• Exposure to staking protocols such as Ethereum, Solana, Polkadot, Cosmos
• Experience working in a regulated or security-sensitive environment

At P2P.org we have a team of experts with their own unique approach and ownership culture. Together we gain experience and make dreams come true! 🌟

• Full-time Contractor (Indefinite-term Consultancy Agreement)
• Competitive salary level in $ (we can also pay in Crypto)
• Well-being program
• Mental Health care program
• Compensation for education, including Foreign Language & professional growth courses
• Equipment & co-working reimbursement program
• Overseas conferences, community immersion
• Positive and friendly communication culture

P2P.org is committed to providing equal opportunities. All applicants will be considered without regard to race, color, national origin, religion, sex, sexual orientation, gender identity, veteran status, or disability.

Dropbox is hiring a remote Full Stack Product Software Engineer. This is a full-time position that can be done remotely anywhere in Poland.

Dropbox - Keep life organised and work moving – all in one place.