Senior Software Engineer, Institutional Custody

Ava Labs

full-time

Posted on: 9/8/2025

Location: New York • 🇺🇸 United States

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💰 $158,440 - $198,050 per year

Senior

DockerGoKubernetesMicroservicesNode.jsPostgresReactSQLiteTypeScriptWeb3

About the role

Design, develop, and maintain crypto wallet systems using TypeScript, Node, REST API, & Go; advance the client application experience.
Architect modular, scalable backend systems with strong security and performance.
Work closely with Partners to optimize configurations and setups for Ava Labs products.
Provide technical guidance across Business Development, Product, Security, Finance, and Engineering teams.
Assess opportunities and recommend solutions tailored to client needs; establish architectures and systems for mass adoption while maintaining security.
Demonstrate independent initiative and take full responsibility for delivering high-quality, secure backend solutions.

Designed/operated REST APIs, modeled data (Postgres/SQLite), and built real-time features (WebSockets/webhooks) with strong DX and documentation.
Basic Kubernetes (K8), Docker, CI/CD, Cloudflare experience.
Experience with Github Actions, developing microservices architecture.
Security-first mindset: collaborate with Security/Compliance; manage secrets; build auditability and observability into the product.
Prior senior-level engineering experience in a blockchain, DeFi, or crypto organization.
Deep understanding of both UTXO and account models, state management, consensus mechanisms.
5+ years of hands-on engineering experience delivering features across Backend and Fullstack (TypeScript/Node).
Self-driven, independent mindset with extreme ownership over your work and outcomes.
User-centric approach to designing and launching high-quality products.