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Senior Software Engineer - Backend

Turnkey - United States (Remote)

Posted Feb 25, 2026

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About this role

Senior Software Engineer - Backend United States (Remote) About Us Turnkey is developer-first infrastructure for private key management, making it simple to create wallets, sign transactions, and automate on-chain actions through one elegant API, without ever exposing sensitive key material. Founded by the team who scaled Coinbase Custody from zero to a $100M+ ARR business and helped protect over $100B in crypto assets, Turnkey is tackling crypto security at its foundational level. Our mission is to make strong cryptography the default across the open internet the same way AWS made scalable computing the default for software. Our team is low-ego, high-agency, and high-autonomy, with a significant amount of combined experience in cryptography, security, and low-level systems. We're building the trustless, programmable infrastructure that will power the next wave of mass-market crypto applications and we're looking for people who want to shape what that future looks like. We are looking for talented engineers who are excited by the radical potential of crypto to change the world for the better. We are generalist engineers and constantly solving new problems and challenges. We are language-agnostic, though we do use Go, Typescript, and Rust in production and while we don't expect you to have a background in every technology we use, we do expect strong fundamentals and experience building scalable infrastructure. What You'll Do - Design and build systems from the ground up without cutting corners on security or usability - Develop signing infrastructure and applications to run inside secure computing environments - Collaborate

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