Product Engineer

Job Description

Job Description

Company Description

At Fun.xyz , we believe a tokenized future is a beneficial inevitability, granting financial emancipation to everyone with an internet connection. For a blockchain-first global economy to exist, value exchange must become intuitive, secure, and seamless.

Enter Checkout - the highest converting payment solution in web3. By integrating Checkout, dApps enable users to complete any on-chain action using crypto from a wallet, centralized exchange, or on-ramped fiat from a card or bank account. With access to market-leading routing and their asset portfolio at the point of sale, users are faster, stickier, and more engaged. For dApps, Checkout scales their user acquisition potential without launching new chains or integrating multiple third party providers.

We built Checkout because we envision a world where anyone, anywhere, can purchase anything with any asset. If that sounds like a vision you can get behind, we want to hear from you.

About the Role

We’re looking for a talented Product Engineer (Mid, Senior, Staff) to join our team and help shape the future of crypto payments.

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

Crypto experience is a plus, but fast learners from any technical background are welcome.

Required Skills and 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

Desired Qualities

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

What Sets You Apart

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

Why Join Us

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

Location and Work Environment

This role is primarily in-person at our Midtown NYC HQ, with in-office collaboration Monday–Thursday and optional WFH Fridays.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.