Senior Backend Engineer

Summary

Join Ava Labs' Crypto Custody team as a Senior Backend Engineer. You will design, develop, and maintain secure, high-performance crypto wallet systems using Golang, supporting protocols like MPC and multi-sig. Collaborate with partners and internal teams to optimize products and guide development. Assess client needs, establish secure architectures for mass adoption, and take ownership of delivering high-quality solutions. This role requires extensive backend engineering experience with a focus on Golang and blockchain technologies, along with strong security expertise and a customer-centric approach. Ava Labs offers a competitive salary and the opportunity to be a pioneer in Web3 technology.

Requirements

• 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
• 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
• 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

• 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
• 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 that ensure mass adoption of Ava Labs products while maintaining top-tier security
• 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
• Remote work