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AVA Labs Inc.

AVA Labs Inc.

via Talents By Vaia

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Senior Software Engineer, Institutional Custody Brooklyn, NY or Remote (North America)

Anywhere
contractor
Posted 10/15/2025
Verified Source
Key Skills:
TypeScript
Node.js
REST API
Postgres
WebSockets
GitHub Actions
Microservices
Security
Blockchain
Go (nice to have)
React (nice to have)

Compensation

Salary Range

$158K - 198K a year

Responsibilities

Design and develop secure, scalable crypto wallet backend systems using TypeScript and Node, collaborate across teams, and drive product advancements with a security-first mindset.

Requirements

Senior-level experience with TypeScript/Node backend development, REST APIs, security practices, blockchain or crypto domain knowledge, and ability to work independently, with Go experience preferred.

Full Description

Overview Senior Software Engineer, Institutional Custody — Ava Labs is building high-performance blockchain solutions for Web3, led by innovations on Avalanche. Ava Labs was founded by Cornell computer scientists, working with Wall Street veterans and early Web3 leaders to redefine how people build permissionless networks. We empower people to digitize assets on one open, programmable blockchain platform. We are looking for a Senior Software Engineer to join our Crypto Custody team. Our team designs, develops, and scales secure, high-performance blockchain and crypto wallet products for Ava Labs and ecosystem partners. This role is part of our technical leadership group — pioneering cutting-edge solutions, building modular and scalable crypto wallet infrastructures, and upholding the highest security standards. Design, develop, and maintain crypto wallet systems using TypeScript, Node, REST API, and Go. Push to advance the client application experience. Architect modular, scalable backend systems with a focus on security and performance. Collaborate 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 enable mass adoption while maintaining top-tier security. Exhibit Extreme Ownership: Demonstrate an independent, proactive mindset and take initiative without micromanagement. Deliver high-quality, secure backend solutions and continuously embrace challenges 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. Experience with GitHub Actions and developing microservices architectures. 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 UTXO and account models, state management, and consensus mechanisms. 5+ years of hands-on engineering experience delivering features across Backend and Fullstack (TypeScript/Node). A self-driven, independent mindset with extreme ownership over work and outcomes. Thrive in an environment that empowers initiative and autonomous work. 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 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 Note: This is not a guarantee of compensation; final offer amounts may vary based on experience and location. NYC metro candidates are required to be in office 2-3x/week (with exceptions). WHY AVA LABS? If you’ve thought about joining an early-stage Web3 company, this is it. We’re a global, world-class team of experts in computer science, economics, finance, marketing, and law with offices in New York City and Miami. We’re passionate about Web3 and redefining how finance and decentralized applications are built and used. The company has backing from prominent investors and advisors, and aims to impact finance, gaming, investing, collectibles, and more. Ava Labs is committed to diversity in the workplace and is an Equal Opportunity Employer. We do not discriminate on the basis of race, color, religion, gender, national origin, citizenship, age, disability, veteran status, marital status, pregnancy, parental status, sex, gender identity or expression, sexual orientation, or any other protected status. All employment decisions are based on qualifications, merit, and business need. Voluntary Self-Identification For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion is voluntary and will not affect hiring decisions. Any information provided will be kept confidential. As a federal contractor, we comply with equal employment opportunity requirements and may collect self-identification information for reporting purposes. #J-18808-Ljbffr AVA Labs Inc.

This job posting was last updated on 10/21/2025

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