Staff Full Stack Engineer

You will design and implement rich frontend experiences and scalable backend services that power wallet infrastructure. You will own features across the stack, from technical design and architecture through implementation, testing, deployment, and ongoing optimization. You will build and maintain backend services and APIs supporting authentication, wallets, and payments infrastructure, and develop user-facing features and frontend tooling for both end-user and developer-facing applications. You will collaborate closely with Product, Design, and other engineering teams to deliver robust, high-impact features, contribute to performance, reliability, and scalability improvements across the platform, and help uphold engineering best practices through code reviews, testing, documentation, and knowledge sharing.

Responsibilities

• Design and implement rich frontend experiences and scalable backend services that power wallet infrastructure
• Own features across the stack from technical design and architecture through implementation, testing, deployment, and ongoing optimization
• Build and maintain backend services and APIs supporting authentication, wallets, and payments infrastructure
• Develop user-facing features and frontend tooling for end-user and developer-facing applications
• Collaborate closely with Product, Design, and other engineering teams to deliver robust, high-impact features
• Contribute to performance, reliability, and scalability improvements across the platform
• Uphold engineering best practices through code reviews, testing, documentation, and knowledge sharing

Requirements

• 3-5 years of experience building and shipping production-grade, full-stack web applications
• Strong experience with React and TypeScript on the frontend
• Experience building backend systems and APIs using Node.js (and frameworks such as Express)
• Comfort working across frontend and backend systems in complex, evolving codebases
• Strong appreciation for clean, maintainable code and system performance
• Experience collaborating cross-functionally with product and design partners
• Curiosity about fintech and Web3, and interest in building infrastructure used at global scale
• Advantage: experience with blockchain technologies (e.g., EVM chains, wallets, on-chain integrations)
• Advantage: Solidity experience writing, deploying, testing, or interacting with smart contracts in production
• Advantage: experience maintaining, testing, and securing smart contract systems post-deployment
• Advantage: experience with a variety of state management solutions in production React applications
• Advantage: experience with security products or other high-sensitivity domains

Benefits

• Target bonus
• Equity grant