Full-stack Engineer – Wallets

🕒 April 29

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Crossmint

WebsiteLinkedInAll Job Openings

11 - 50 employees

Building the infrastructure layer to make NFTs mainstreamOur core product is the leading fiat on-ramp for NFTs, trusted by 5,000+ enterprises and creators, including Magic Eden, Sylvester Stallone, and Kevin Hart. We have a broader suite of APIs and developer tools, including minting APIs, custodial wallets as a service, and cross-chain payments

📋 Description

• Write high-quality production code that is correct, secure, performant, and maintainable. • Build and scale wallet infrastructure components, including wallet creation, signing flows, transaction orchestration, and lifecycle management. • Implement and evolve programmable wallet primitives, such as modular signers, delegated transaction logic, and permissions enforced onchain. • Build backend services, APIs, and frontend tools that empower developers to integrate Crossmint wallets and developer experiences at scale. • Design scalable, secure systems that bridge onchain and offchain components while maintaining data integrity and compliance. • Contribute to architecture and design documentation to shape the long-term evolution of Crossmint wallet products. • Own features end to end from design to production deploy and iteration. • Participate in paid on-call rotations once or twice per quarter. • Mentor and support teammates to help grow the engineering organization.

🎯 Requirements

• Strong communication skills in written and spoken English. • Bachelor’s degree in Computer Science or equivalent professional experience. • 5+ years building production systems, ideally with backend and full-stack responsibilities. • Strong programming skills in at least one modern language such as TypeScript (Ideal), JavaScript, Java, Python, or similar. • Experience with wallet infrastructure, transaction systems, or blockchain-related services. • Solid understanding of blockchain fundamentals, including smart contract interactions, gas abstraction, and transaction lifecycles. • A product and ownership mindset with an ability to balance usability, security, and long-term reliability.

🏖️ Benefits

• Extensive access to leading AI tools and subscriptions, with AI actively encouraged and integrated into daily workflows. • Stock options program. • We conduct two performance reviews annually. The first addresses performance ratings, bonuses, and promotions. The second encompasses these elements along with salary adjustments reflecting inflation and market conditions. • Unlimited, flexible PTO. • Flexible work schedule. • Company laptop and allowance for any necessary home equipment. • Daily stipend for commuting to the office. • Company-paid trips for annual off-sites and onsites. • Insurance covered by Crossmint. • 401(k) Plan.