3 days ago
Base Salary
$150k - $300k/yr
Responsibilities
- Design, build, and maintain high-performance APIs and backend services for the Web3 payments platform.
- Build new features that improve the product experience.
- Collaborate with product and protocol teams to architect solutions meeting business requirements.
- Write clean, well-tested code and participate in code reviews.
- Contribute to incident response and debug production issues to maintain system reliability.
Requirements
- Strong experience building production backend systems with modern languages.
- Proficiency in TypeScript.
- Deep understanding of distributed systems, APIs, and database design principles.
- Hands-on experience with cloud platforms and containerization technologies.
- Solid understanding of data structures, algorithms, and computer science fundamentals.
- Strong problem-solving and debugging skills.
- Clear communication and effective cross-functional collaboration.
- Experience with blockchain integrations, smart contracts, DeFi protocols, high-scale payment processing, financial compliance, event-driven architectures, or real-time data processing is preferred.
Benefits
- Primarily in-person at the Midtown, NYC headquarters.
- Monday through Thursday are collaborative in-office days, with optional work-from-home Fridays.
- Opportunity to shape payments and programmable money infrastructure and collaborate with protocols, builders, and financial infrastructure providers.
Tech Stack
Categories
About fun.xyz
Fun.xyz builds crypto payment infrastructure and developer tools—APIs, SDKs, and checkout—to let companies accept and send onchain payments across assets and blockchains. It sells enterprise-grade payments and wallet services to fintechs, consumer apps, and marketplaces, with usage-based and transaction fees. Privately held and headquartered in New York, it raised a Series A in 2026.