Senior/Staff Software Engineer | Fullstack

Privy (Headquarters: New York or Remote)

fullstack frontend backend react typescript go rust node.js api distributed systems senior staff fintech crypto wallets Full Stack 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 Fullstack Engineer at Privy, you will work across our entire technology stack, from frontend user interfaces to backend APIs and services. You'll contribute to building end-to-end features, tackling challenges in both client-side development and server-side logic, ensuring a cohesive and robust product experience.

Responsibilities:
*   Design, develop, and maintain features across both frontend (React, TypeScript) and backend (Go, Rust, Node.js) systems.
*   Build and integrate APIs for seamless communication between client and server.
*   Collaborate with product, design, and other engineering teams to deliver user-facing features.
*   Work with databases, cloud infrastructure, and potentially blockchain technologies.
*   Ensure code quality, performance, and security across the stack.
*   Take ownership of features from conception to deployment and monitoring.
*   Contribute to architectural discussions spanning frontend and backend (Staff level).

Ideal Candidate:
*   Strong experience in both frontend (React, TypeScript preferred) and backend development (Go, Rust, Node.js, or similar).
*   Proven ability to build and ship full-stack web applications.
*   Experience with API design (REST, GraphQL) and database management (SQL/NoSQL).
*   Familiarity with cloud platforms (AWS/GCP) and modern web development practices.
*   Ability to quickly learn new technologies and work effectively across different domains.
*   Strong problem-solving skills and a product-oriented mindset.
*   Interest in crypto, web3, or fintech is a plus.
*   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.