Senior Software Engineer, Institutional Custody

Job Description

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 Salary Range: $158,440 to $198,050 (**This is not a guarantee of compensation or salary, a final offer amount may vary based on factors including but not limited to experience and geographic location. NYC metro candidates are required to be in office 2-3x/week (with exceptions)).