Senior Full Stack Engineer BackEnd Oriented

Senior Full Stack Engineer (Back-End Oriented) Remote • Engineering • Full-time • Remote At Offchain Labs, we aren’t just building products: we’re leading a movement. As pioneers in blockchain scalability and security, we're at the forefront of transforming how the world interacts with decentralized applications. We're laying the foundation that will define the next generation of digital commerce, governance, and human interaction. This involves tackling real-world challenges that come with scaling blockchain technology, without compromising on its core principles: decentralization, security and transparency. At the center of this vision is our people. Our team is made up of thinkers and doers that embrace new challenges and seek solutions that push existing boundaries. If you’re energized by solving unprecedented problems, and believe in the role that decentralized systems will play in creating a more equitable digital future, then we want to hear from you. Why Offchain Labs? Offchain Labs is setting the pace for the entire Ethereum ecosystem. We built the Arbitrum stack that powers Arbitrum One, the most widely adopted Ethereum scaling solution that exists today. Arbitrum’s ecosystem is undergoing tremendous growth with hundreds of projects and dApps on Arbitrum One today. Over 100 different teams have used Offchain Labs technology to build their own Arbitrum chains. Major players in the space, Robinhood, BlackRock, Ethena Labs, Securitize, Aave, and Apechain are all using the Arbitrum stack. Arbitrum’s thriving ecosystem wouldn’t exist without our advanced technology stack. Arbitrum, Prysm, ZeroDev. These aren’t just product names. These are tools that are actively reshaping what's possible on Ethereum and advancing its core infrastructure. To top it all off? We’re backed by $124 million in funding. We’ve demonstrated consistent execution with billions in secured value, thousands of supported projects, and infrastructure processing millions of transactions seamlessly. The Role At Offchain Labs, we steward the giant technical ecosystem around Arbitrum technology bridging across a broad variety of products and use cases. As part of the Full Stack Engineering team at Offchain Labs, you'll be leading the effort to develop and optimize our tech, including services powering our consumer-facing apps, internal services, various developer tools, and more, using your expertise in JavaScript and TypeScript. We’re looking for someone who is genuinely excited about blockchain, has excellent communication abilities and is enthusiastic to learn more from the team, including our CTO. What you'll do: Contribute as an expert in JavaScript and TypeScript Work on Node.js back-end services focused on blockchain, Ethereum scaling with Arbitrum, onchain apps, and more Work on developer tooling and SDKs that will help people build awesome products Keep up-to-date on the latest technologies and developments in the space Look for ways to help out beyond the scope of your day-to-day work What you’ll need: 5+ years of hands‑on full-stack engineering experience Mastery of CS fundamentals, either through a formal university program or through self-learning Expertise in JavaScript and TypeScript Expertise in building secure, stable and scalable Node.js back-end services and an understanding of cloud infrastructure necessary to power said services Experience designing SDKs with clean and intuitive APIs, and similar developers tooling Experience with Web3, Ethereum, and tooling such as Viem or Ethers A track record of successfully shipping products to customers A strong sense of ownership in your work, which drives you to find ways to do things better and faster A detail‑oriented approach to work, always making sure to output high-quality work through rigorous testing A security‑first mindset, proactively identifying and addressing potential vulnerabilities in code A curious mind, constantly on the lookout for new technologies and innovative ways to solve complex problems through experimentation Perks: Remote‑first global workforce + NY office Annual company offsite + team on‑sites Professional reimbursement program (facilitates industry conference attendance, certifications, and more) Medical, dental & vision coverage (US + some other countries) 401k retirement plan + company match (US only) Wellness stipend Home office set up / ergonomic equipment program Attention Offchain Labs Job Seekers This role cannot be performed in California, or Colorado. Please be advised that there has been a rise in fraudulent recruiter activities, particularly within the Web3 space. If you would like to confirm whether someone is an OCL employee or the legitimacy of an offer you received, please email [emailprotected] . Our Commitment At Offchain Labs, we are committed to building a welcoming and supportive workplace for all employees, regardless of their background or identity. We strive to create an environment where everyone feels valued and has an equal opportunity to succeed and thrive. We encourage candidates from all walks of life to apply and join our team. AI Tools & Data Processing We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. 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