Senior Software Engineer, Institutional Custody
About the Role
You will design, develop, and maintain crypto wallet systems and backend services using TypeScript, Node, REST APIs, and Go. You will architect modular, scalable systems with a security-first approach, build real-time features, and collaborate with partners and cross-functional teams to deliver production-grade, observable solutions.
Requirements
- 5+ years of hands-on engineering experience delivering backend and fullstack features with TypeScript and Node
- Prior senior-level engineering experience in a blockchain, DeFi, or crypto organization
- Deep understanding of UTXO and account models and consensus mechanisms
- Experience designing and operating REST APIs and modeling data in Postgres or SQLite
- Experience building real-time features with WebSockets and webhooks
- Familiarity with Kubernetes, Docker, CI/CD, and Cloudflare
- Experience with GitHub Actions and microservices architecture
- Security-first mindset including secrets management, auditability, and observability
Responsibilities
- Design, develop, and maintain crypto wallet systems using TypeScript, Node, REST API, and Go
- Architect modular, scalable backend systems with a focus on security and performance
- Design and operate REST APIs and model data using Postgres or SQLite
- Build real-time features using WebSockets and webhooks
- Collaborate with partners and cross-functional teams to optimize integrations and configurations
- Implement auditability and observability and manage secrets
- Assess client needs and recommend tailored technical solutions
- Deliver high-quality, secure backend solutions with strong ownership