Develop core backend infrastructure for blockchain execution and Ethereum scaling.
Tackle distributed systems challenges involving reliability, performance, and scalability.
Strengthen security and drive projects from investigation through implementation.
They build foundational infrastructure for Ethereum scalability, security, and decentralized applications. They are a remote-first, globally distributed team collaborating across research, product, and blockchain engineering.
Design, build, and maintain core protocol components for a Bitcoin-secured Layer 2 rollup.
Work on the bridge and proof system, including deposits, withdrawals, and cross-layer messages.
Maintain a large open source codebase, review code, and take part in architecture decisions.
RootstockLabs is a key contributor to Rootstock, Bitcoin's financial infrastructure for lending, yield, and onchain capital markets. The company builds and commercializes institutional infrastructure that turns Bitcoin into productive capital, working with leading custodians and asset managers. Rootstock is secured by over 80% of Bitcoin's hash power and runs with 100% uptime since 2018.
Deeply research new cryptoassets and integrate them into Anchorage Digital's platform.
Implement participatory features like staking, governance, and vesting.
Develop infrastructure that scales across all crypto-networks and support assets through upgrades.
Anchorage Digital is a crypto platform that enables institutions to participate in digital assets through custody, staking, trading, governance, settlement, and security infrastructure. With a diverse team of over 600 members, they are united in building the future of finance, and are committed to being a welcoming and inclusive workplace.
Design and build core quote-generation and pricing engines for cross-chain transactions.
Integrate with decentralized exchanges and aggregators like Uniswap, 1inch, and LiFi.
Own end-to-end transaction pipelines from deposit detection to settlement, ensuring reliability and observability.
The company builds blockchain infrastructure for fast, reliable cross-chain transactions. It operates in a remote-first environment with a focus on collaboration, flexibility, and high-impact engineering.
Implement privacy-improving, anti-tracking, and threat intelligence protections into Firefox.
Advance the browser engine by building performant C++, JavaScript, and Rust code in Gecko.
Work asynchronously with a geographically distributed team to ship complex privacy features.
Mozilla Corporation is the non-profit-backed technology company behind Firefox and other internet privacy brands. With over 225 million monthly users, we are a mission-driven, open-source organization shaped by a culture of innovation and public service.
Implement Storage Encryption Everywhere in Gecko, including schema migrations and private browsing mode data storage.
Write and pass Web Platform Tests and add Gecko tests while iterating through code review with module owners.
Drive the feature through Nightly, Beta, and Release, fixing correctness, performance issues, and regressions.
Mozilla builds Firefox and other software that promote an open, private, and accessible internet. It is a mission-driven, globally distributed organization with a culture of transparency, open source contribution, and user trust.
Own features end to end: backend, frontend, and production.
Build backend services in Go and TypeScript, dApp frontends in React, and integrate smart wallets.
Review code, monitor production, and maintain AI tooling for the team.
Xsolla is a global video game commerce company headquartered in Los Angeles. It helps developers from indie to AAA fund, distribute, market and monetize their games, and acts as merchant of record for 1,500+ developers worldwide.
Run production for institutional customers, holding the First Responder rotation, coordinating incidents, and writing RCAs.
Decide what ships: go/no-go on changes to environments, verification before rollout, and execution of sequencer rollouts.
Remove the cause by turning pages and manual steps into fixes in the sequencer, provers, or tooling.
Matter Labs invented ZK rollups and built the first one on Ethereum, processing over a billion transactions with over four billion dollars in value locked. The company is a small, remote-first team with a CEO you can reach, few approvals, and a high hiring bar.
Plan and establish the technical roadmap for blockchain security products, completing core modules and frameworks.
Define architecture standards, maintain infrastructure, and develop automation tools for continuous delivery and operational efficiency.
Engage users, deliver client APIs, and troubleshoot back-end issues to ensure system performance and stability.
Binance is a leading global blockchain ecosystem behind the world's largest cryptocurrency exchange by trading volume. Trusted by 300+ million people in 100+ countries, Binance fosters a results-driven, user-centric culture with a flat structure.
Lead and support blockchain development initiatives within a Web3.0-focused team.
Design, develop, and maintain blockchain-related solutions and decentralized applications.
Collaborate with developers to deliver reliable, maintainable, and effective solutions.
They are a technology team building and advancing Web3.0 solutions in the blockchain ecosystem. The culture is collaborative and innovation-driven, with an emphasis on decentralized technologies and technical quality.
Own product strategy and roadmaps for Hardhat and EDR, aligning with developer needs and ecosystem priorities.
Translate technical challenges into clear requirements, prioritizing features for smart contract development workflows.
Collaborate with engineering and ecosystem partners to shape APIs, CLIs, and developer experience.
They advance the Ethereum ecosystem by building open-source developer tools like Hardhat and EDR. They operate fully remote-first with a lean, collaborative culture focused on autonomy and practical decision-making.
Lead two specialized engineering teams building developer tools for smart contracts.
Shape technical roadmap and architecture while managing project delivery and quality.
Foster a high-performing remote culture and develop engineering talent.
Builds open-source developer infrastructure for the Ethereum ecosystem, including the Hardhat toolset. Remote-first culture with lean engineering practices and a focus on technical excellence.
Own full stack development across React interfaces, Node.js services, and Web3 integrations.
Build and scale decentralized applications integrating wallets, DeFi protocols, and on-chain data.
Design systems for performance, security, scalability, and interoperability while investigating production issues.
G2i is a recruiting company placing top engineering talent. This role is with Moonberg, a Zug-based intelligence lab building market intelligence and infrastructure for decentralized markets with a fully senior, execution-focused culture.
Own and run bug bounty programs and external audit engagements, triaging and validating fixes.
Secure code and software supply chain, including CI/CD defenses, dependency controls, and signing.
Build anti-scam, anti-abuse, and security tooling with static/dynamic analysis and LLM-driven agents.
Mysten Labs builds foundational blockchain infrastructure and products, including Sui and Move, to advance the internet and enable the agent economy. It is a remote-first, world-class team backed by a $300M Series B from leading venture funds.
Lead full-stack development and deliver product features from conception to implementation.
Build integrations with DeFi protocols, DEX aggregators, cross-chain bridges, and crypto APIs.
Develop responsive interfaces with Next.js, React, and TailwindCSS, and scalable backend services with Node.js, TypeScript, PostgreSQL, Redis, and WebSockets.
The company is building an all-in-one DeFi platform designed to make decentralized finance more accessible and intuitive. As a fast-moving startup, it rewards initiative, technical excellence, curiosity, and rapid execution.
Build and maintain core components on the Injective protocol, including a decentralized orderbook and Layer-2 execution environment.
Design and implement financial primitives on-chain like derivatives, margining, and pricing, translating tradFi practices into protocol features.
Optimize blockchain performance, from consensus to state management, and own features end-to-end.
Injective builds a decentralized blockchain optimized for finance. They are a remote-friendly team offering cutting-edge technology and a collaborative culture with growth opportunities.
Lead product management for stablecoin infrastructure, shaping the strategic roadmap and driving hands-on execution.
Partner with Engineering, Finance, and commercial teams to improve pricing, onboarding, and operational workflows.
Build and develop a high-leverage product team while retaining direct ownership of key initiatives.
Brale is an infrastructure layer that helps clients launch, manage, and use stablecoins in everyday applications, supporting payments, embedded finance, and financial institutions. It is a regulated fintech with a fast-moving, low-bureaucracy, low-ego remote team.
Build central security systems and automation the whole company relies on.
Secure cloud infrastructure, identity and access across Rain's growing footprint.
Lead external security assessments and drive findings to verified fixes.
Rain is a global stablecoin payments platform for enterprises, neobanks, platforms, developers, and AI agents. Backed by top investors and valued at $1.95B, Rain is a hypergrowth company with a flat, open culture trusted by over 100 organizations worldwide.
Take ownership of full stack development across React, Node.js, and Web3 integrations.
Design scalable decentralized applications processing real-time market and blockchain data.
Collaborate with senior engineers to shape architecture and deliver production-grade trading tools.
They build advanced market intelligence solutions and decentralized trading infrastructure for Web3. It is a fast-paced startup environment with a highly experienced, senior-level engineering team.
Write Web-Platform tests and Gecko mochitests to improve Session History coverage and correctness.
Fix test failures and bugs to improve Gecko correctness, working through code review with module owners.
Collaborate with the Firefox DOM Core team to improve the health of the Session History area.
Mozilla builds the Firefox browser and champions a healthy, open internet. It is a global, mission-driven organization known for its commitment to privacy and open source software.