Senior Software Engineer, Magic Labs

• 7+ years as a Backend Engineer or equivalent experience, with a focus on: Python (FastAPI/Django/Flask), TypeScript (node.js) microservices, REST/GraphQL, distributed systems
• Experience building systems with TEE/secure enclaves, Nitro AWS
• Proven track record at scale - building high‑traffic, low‑latency systems (e.g., handling tens of millions of users/wallets)
• Solid familiarity with blockchain fundamentals (EVM chains), crypto wallets, wallet abstraction, dapp architecture and signing curves
• Experience integrating with blockchains: RPC, on‑chain transactions (i.e., viem), gas/nonce management, wallet flows
• Familiarity with cloud infrastructure at scale: Kubernetes/ECS, serverless, CI/CD (GitHub Actions), distributed logging/metrics
• Strong understanding of security best practices and compliance; experience in security-minded architectures
• Excellent communication, mentorship, and autonomous execution at a senior engineering level
• Proficiency with AI coding tools (Copilot, Cursor, Codex, Warp, etc.)

Desirable

• We’re seeking a Senior Software Engineer, Backend join the Magic Labs team. You’ll play an integral role in building and supporting systems, including our TKMS secure enclave key management system (TypeScript, node.js), API Wallet Express, our easy to implement API based key management system (Python), and new products that leverage Netwon, our blockchain-based policy engine (Python, TypeScript, React, Next.js). This role will solve challenging implementation problems at crypto-scale, onboarding additional chain support, adding new use cases, and building both frontend and backend features
• Architect and implement backend features: robust Python APIs with FastAPI services, TypeScript node.js services leveraging Nitro AWS secure enclaves (TEE)
• Build, optimize, and scale backend services supporting millions of users
• Work closely with product and security teams to ensure our systems meet Security and SOC 2/ISO/HIPAA-grade standards
• Design and integrate features that leverage the Newton policy protocol and help bring experiences that leverage the protocol to the masses
• Collaborate with protocol team to enable verifiable on‑chain actions (powered by TEE + ZK proofs)
• Lead and mentor other engineers, drive code reviews, set best practices for maintainable, scalable architecture
• Ensure and enhance authentication flows (Email OTP, passkey, Web3 logins, session safety) in our full‑stack apps