Crypto Payments SDK Engineer — Full-Stack, NYC Hybrid

Fun; New York (NY); On-site; USD 155,000 - 300,000; Full time

Job summary

Fun is seeking a Product Engineer to design and scale SDK software powering Checkout across web2 and web3. You will work across the stack balancing performance, reliability, and UX, collaborating with protocol, backend, and business teams to solve complex challenges and build tools that scale globally for on‑chain payments.

This is an in-person role at our Midtown, NYC headquarters. The base salary ranges from $155,000 to $300,000 with a comprehensive rewards package, including potential equity

Qualifications

• 3+ years of engineering experience with JavaScript, TypeScript, and modern frameworks.
• Strong understanding of full-stack development, including React and backend APIs.
• Attention to detail in both product design and user interaction.
• Proven track record building scalable, high-performance software.

Responsibilities

• Design and scale SDK software powering Checkout across web2 and web3.
• Work across the stack balancing performance, reliability and UX.
• Collaborate with protocol, backend, and business teams.
• Build tools that scale globally to meet on-chain payments demands.

Skills

JavaScript

TypeScript

React

Full-stack development

Backend APIs

Attention to detail

High-performance software

Education

Bachelor's degree in Computer Science or related field

Tools

SDK development

APIs design

Job description

Fun is seeking a Product Engineer to design and scale SDK software powering Checkout across web2 and web3. You will work across the stack balancing performance, reliability, and UX, collaborating with protocol, backend, and business teams to solve complex challenges and build tools that scale globally for on‑chain payments.

This is an in-person role at our Midtown, NYC headquarters. The base salary ranges from $155,000 to $300,000 with a comprehensive rewards package, including potential equity