Senior Software Engineer, Institutional Custody

We are looking for a Senior Software Engineer to join our Crypto Custody team. Our team is responsible for designing, developing, and scaling secure, high-performance blockchain and crypto wallet products for Ava Labs and our ecosystem partners. This role is an integral part of our technical leadership group—pioneering cutting-edge solutions, building modular and scalable crypto wallet infrastructures, and ensuring the highest standards of security.

• Innovate & Architect:
  • Design, develop, and maintain crypto wallet systems using TypeScript, Node, & REST API, & Go. Pushing to advance the client application experience
  • Architect modular, scalable backend systems with an unwavering commitment to security and performance
• Collaborate Across Teams:
  • 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
• Drive Product Advancements:
  • Assess opportunities and recommend solutions tailored to client needs
  • Establish architectures and systems that ensure mass adoption of Ava Labs products while maintaining top-tier security
• Exhibit Extreme Ownership:
  • Demonstrate an independent, driven mindset that thrives on taking initiative without being micromanaged
  • Take full responsibility for delivering high-quality, secure backend solutions while continuously embracing challenges, learning, and pushing boundaries to drive product excellence

WHAT YOU WILL BRING

• API & data ownership: designed/operated REST APIs, modeled data (Postgres/SQLite), and built real-time features (WebSockets/webhooks) with strong DX and documentation.
• Infrastructure Exposure (Basic Kubernetes (K8), Docker, CI/CD, Cloudflare)
• Experience with Github Actions, as well as developing microservices architecture
• Security-first mindset: collaborate effectively 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)
• Leadership & Independence:
  • A self-driven, independent mindset with extreme ownership over your work and outcomes
  • Thrive in an environment where you are empowered to take initiative and work autonomously without being micromanaged
  • Excellent problem-solving skills and a proactive approach to overcoming technical challenges
• Customer Focus:
  • A user-centric approach to designing and launching high-quality products that fuel the growth of the crypto economy
  • Proven ability to empathize with customer challenges and translate those insights into actionable development priorities

NICE TO HAVE

• Experience or familiarity integrating services with Go
• Familiarity with multi-party computation (MPC) protocols
• Familiarity with React