Senior Web3 Engineer

We’re working with an applied research and engineering lab operating at the intersection of cryptography, blockchain, and emerging technologies. The team builds production-ready tooling that strengthens the long-term security of digital assets, with a focus on forward-compatible cryptographic systems and real-world usability. Their work spans products, integrations, audits, testnets, and applied research with leading ecosystem partners.
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The Role

As a Senior Web3 Engineer, you’ll join a growing Product Engineering team focused on building secure, user-facing blockchain applications that protect digital assets while delivering high-quality user experiences. This is a full-time, fully remote role based in Europe (GMT–GMT+2).
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What You’ll Do

• Own development of user-facing Web3 applications with a strong focus on security and usability
• Design and implement high-quality UIs for wallet and transaction flows
• Integrate frontend applications with security-critical core libraries
• Ensure safe handling of permissions, errors, and edge cases in blockchain interactions
• Collaborate closely with backend, protocol, and security engineers
• Build scalable component architectures and frontend state management
• Maintain high standards for performance, accessibility, and cross-platform support
• Participate in usability testing and iterate based on feedback
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What You Bring

• Strong TypeScript skills and modern frontend experience (React or similar)
• Production experience building and shipping browser extensions
• Solid understanding of Web3 fundamentals (wallets, JSON-RPC, signing flows)
• Security-aware mindset with experience handling sensitive logic
• Strong UI/UX skills with attention to detail and user experience
• Ownership mindset and clear English communication
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Nice to Have

• Mobile development experience (React Native or iOS)
• ERC-4337 / account abstraction experience
• Awareness of post-quantum cryptography
• Backend experience in Node.js or Rust
• Experience with Viem, ZeroDev, or similar tooling

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