Senior Backend Engineer

Summary

Join Ava Labs' Crypto Custody team as a Senior Backend Engineer, designing, developing, and scaling secure, high-performance blockchain and crypto wallet products. You will innovate and architect crypto wallet systems using Golang, collaborate with partners, provide technical guidance across teams, and drive product advancements. This role requires 5+ years of backend engineering experience with a strong focus on Golang, proven experience building crypto wallets or blockchain-related products, and a deep understanding of UTXO and Account models. You will need to demonstrate leadership, independence, and a customer-centric approach. The salary range is $158,440 to $198,050, and NYC metro candidates are required to be in office 2-3x/week.

Requirements

• Technical Expertise: 5+ years of hands-on engineering experience with a strong focus on backend systems, particularly in Golang—experience with JavaScript is a plus
• Proven track record in building crypto wallets or blockchain-related products
• Deep understanding of both UTXO and Account models, state management, and consensus mechanisms
• Extensive experience in secure coding practices with a very strong understanding of security principles as they apply to blockchain and crypto wallet systems
• Familiarity with competitive technologies and cloud service setups
• 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

Responsibilities

• Innovate & Architect: Design, develop, and maintain crypto wallet systems using Golang, ensuring robust support for protocols such as multi-party computation (MPC) and multi-signature (multi-sig) configurations
• 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

Preferred Qualifications

• 3+ years of solutions architecture experience
• Experience with multi-party computation (MPC) protocols
• Hands-on experience with advanced security testing tools and methodologies
• Expertise in infrastructure engineering, including Kubernetes, CI/CD pipelines, and cloud platforms such as AWS, GCP, or Azure
• Prior senior-level engineering experience in a blockchain or crypto organization

Benefits

Salary Range: $158,440 to $198,050