Senior/Staff Software Engineer | Backend

Privy (Headquarters: New York or Remote)

backend api distributed systems scalability security blockchain crypto wallets fintech go rust senior staff TEE key sharding Back End Engineer Staff Engineer

Company: Privy is an identity and fintech infrastructure startup building a wallet and digital asset API for companies using blockchain and distributed systems, backed by $40M from Ribbit & Sequoia. We power digital ownership for millions of users (>5M MAU) with a focus on privacy and user control through modern cryptography. We're a small, high-ownership team shipping multiple times weekly.

Role: As a Senior or Staff Backend Engineer at Privy, you will design, build, and maintain the core APIs and distributed systems that power our wallet infrastructure and digital asset services. You'll tackle challenges related to scalability, security, and reliability for systems handling massive transaction volumes and user bases. You will contribute to our mission of making digital ownership accessible and secure.

Responsibilities:
*   Design, develop, and operate highly available and scalable backend services.
*   Build and maintain robust APIs for wallet management, key management, and transaction signing.
*   Collaborate with frontend, infrastructure, and product teams to deliver impactful features.
*   Work with technologies related to blockchain, cryptography (TEEs, key sharding), and distributed systems.
*   Ensure the security and reliability of our core infrastructure handling sensitive user data and assets.
*   Mentor junior engineers (Staff level) and contribute to architectural decisions.

Ideal Candidate:
*   Strong experience building and scaling backend systems and APIs (e.g., using Go, Rust, Node.js, or similar).
*   Experience with distributed systems, databases (SQL/NoSQL), and cloud infrastructure (AWS/GCP).
*   Interest or experience in blockchain, cryptography, or fintech is a plus.
*   Proven ability to take ownership and deliver features in a fast-paced environment.
*   Excellent problem-solving skills and attention to detail.
*   Based in NYC or willing to work remotely.

Benefits: Competitive salary/equity, 100% health coverage, 401(k), remote flexibility, NYC office option, PTO, parental leave, WFH stipend, team events.