This position is posted by Jobgether on behalf of Ava Labs. We are currently looking for a Senior Software Engineer, Institutional Custody in North America.

We are seeking an experienced Senior Software Engineer to join a high-performing team building secure, scalable, and high-performance blockchain and crypto wallet systems. In this role, you will architect modular backend infrastructures, develop robust APIs, and implement features that empower institutions to safely manage digital assets. Collaborating across product, security, finance, and engineering teams, you will influence technical strategy, drive product innovation, and ensure top-tier security standards. This position offers the chance to take full ownership of critical systems, contribute to a cutting-edge crypto ecosystem, and work in a fast-paced, autonomous environment focused on innovation and excellence.

Accountabilities

Design, develop, and maintain crypto wallet systems using TypeScript, Node, REST APIs, and Go
Architect modular, scalable backend systems with a strong focus on security and performance
Collaborate with cross-functional teams, including Product, Security, Business Development, and Finance, to optimize client solutions
Establish systems and architectures that support mass adoption while maintaining top-tier security standards
Take full ownership of backend features, delivering high-quality, secure, and reliable software
Assess technical opportunities and recommend solutions tailored to client and ecosystem needs
Build observability, auditability, and monitoring into systems to ensure robust operational practices
Participate in code reviews, testing, and CI/CD pipeline management to ensure best practices are followed

Requirements

5+ years of hands-on engineering experience delivering backend or fullstack features using TypeScript/Node
Prior senior-level engineering experience in blockchain, DeFi, or crypto organizations
Deep understanding of UTXO and account models, consensus mechanisms, and state management
Proven experience designing and operating REST APIs, modeling data in Postgres or SQLite, and implementing real-time features with WebSockets or webhooks
Infrastructure exposure including Kubernetes, Docker, CI/CD, and cloud deployments
Familiarity with GitHub Actions and microservices architecture
Security-first mindset, collaborating with Security/Compliance, managing secrets, and embedding auditability into products
Self-driven, independent, and capable of taking extreme ownership of your work
Excellent problem-solving skills and a proactive approach to technical challenges
Customer-focused mindset with the ability to empathize with client needs and translate them into actionable features
Bonus: experience with Go, multi-party computation (MPC) protocols, or React

Benefits

Competitive salary range of $158,440 to $198,050, with adjustments based on experience and location
Fully remote work, with NYC metro candidates required 2-3x per week on-site (exceptions apply)
Opportunity to join a world-class, early-stage Web3 team shaping the future of finance and digital assets
Collaborate with experts in computer science, finance, economics, and law
Work in a fast-paced, innovative environment with autonomy and ownership of critical systems
Contribute to a mission that impacts multiple verticals including finance, gaming, investing, and collectibles

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

When you apply, your profile goes through our AI-powered screening process designed to identify top talent efficiently and fairly.

🔍 Our AI evaluates your CV and LinkedIn profile thoroughly, analyzing your skills, experience, and achievements.

📊 It compares your profile to the job's core requirements and past success factors to determine your match score.

🎯 Based on this analysis, we automatically shortlist the 3 candidates with the highest match to the role.

🧠 When necessary, our human team may perform an additional manual review to ensure no strong profile is missed.

The process is transparent, skills-based, and free of bias — focusing solely on your fit for the role.

Once the shortlist is completed, we share it directly with the company that owns the job opening. The final decision and next steps (such as interviews or additional assessments) are then made by their internal hiring team.

Thank you for your interest!