3 days ago
Base Salary
$155k - $300k/yr
Responsibilities
- Design and scale SDK software powering Checkout across web2 and web3 environments.
- Build scalable, high-performance systems for on-chain payments and consumer-facing fintech applications.
- Work across the stack with protocol, backend, and business teams.
- Develop tools and infrastructure that balance performance, reliability, security, accessibility, and user experience.
- Contribute to products from 0 to 1 and take ownership in a fast-paced environment.
Requirements
- At least 3 years of engineering experience with JavaScript, TypeScript, and modern frameworks.
- Strong full-stack development skills, including React and backend APIs.
- Attention to detail in product design and user interaction.
- A proven track record of building scalable, high-performance software.
- Blockchain technologies, EVM-compatible networks, payments, SDKs, or crypto-related systems experience are preferred.
- Open-source contributions or experience building SDKs or developer tools are preferred.
Benefits
- Work on the future of payments and programmable money.
- Collaborate with protocols, builders, and financial infrastructure providers.
- Contribute to a mission-driven environment focused on access, openness, and trust.
- The role is primarily in-person at the Midtown, NYC headquarters Monday through Thursday, with optional work-from-home Fridays.
Tech Stack
Categories
Full StackProduct Engineering
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.