Product Engineer

🕒 November 12, 2025

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Fun.xyz

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2022

💳 Fintech

🤝 B2B

Fintech • B2B • Payments

Fun. xyz is a company focused on values rather than traditional business metrics. It emphasizes a commitment to excellence and serving industry trailblazers, preferring to let its work speak for itself rather than engaging with social media or hype. The company handles over $1 billion in payments annually and has raised over $47 million.

📋 Description

• Design and scale SDK software that powers Checkout across web2 and web3 environments • Work across the stack on systems that balance performance, reliability, and UX • Collaborate with protocol, backend, and business teams to solve complex challenges • Build tools that scale globally and meet the evolving demands of on-chain payments

🎯 Requirements

• 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 • Familiarity with blockchain technologies and EVM-compatible networks • Comfortable solving difficult technical problems in agile environments • Experience working on payments, SDKs, or crypto-related systems • Passion for building secure, efficient, and accessible tools • You've contributed to open-source projects or built SDKs/dev tools • You have shipped products from 0 to 1 in a fast-paced setting • You thrive in ownership-heavy environments and pride yourself on execution • You approach problem-solving with thoughtfulness, precision, and rigor

🏖️ Benefits

• Work on cutting-edge products that power the next era of web3 • Collaborate with exceptional teammates across engineering, design, and protocol • Take on meaningful ownership in a mission-driven and high-impact company • Push the boundaries of what’s possible in decentralized payments