Senior Blockchain Engineer

Hi, we’re MoonPay. We’re here to onboard the world to the decentralized economy.

Because crypto and blockchain aren’t just technologies—they’re tools for global financial empowerment. They give people control over their money, their digital assets, and their future, unlocking opportunities that traditional systems have kept out of reach.

At MoonPay, we’re building the infrastructure that powers this new financial system. We make it easy for anyone, anywhere, to buy, sell, and trade crypto using everyday payment methods like cards, Apple Pay, PayPal, Revolut and Venmo. We provide simple tools to send, receive, and manage stablecoins, so anyone can participate in the crypto economy confidently.

Trusted by nearly 30 million customers and over 500 companies, our secure, enterprise-grade platform is driving mainstream crypto adoption worldwide.

We collaborate with innovative brands and projects to build secure, scalable solutions for a blockchain-powered future. And we’re committed to doing it right—fully licensed in the U.S. and regulated across the UK, EU, Canada, and Australia—because trust and compliance are non-negotiable.

But we’re just getting started. We’ve launched a consumer app that makes crypto accessible, intuitive, and usable for everyone, and it’s growing fast. We’re iterating every day to make it the best it can be.

If you believe financial freedom should be for everyone—if you believe in building a fairer, more open financial system—we want you with us. To build systems that benefit all, we need contributions from all, regardless of background.

Come build the future of payments and the decentralized economy with MoonPay. Let’s make financial freedom and autonomy the new normal.

About the Opportunity

Our Engineering team builds the technology that empowers MoonPay to innovate rapidly and scale efficiently. We thrive in small, collaborative cross-functional teams of 4-6 engineers, working closely with a dedicated Product Manager and Product Data Analyst. MoonPay is seeking individuals with experience in developing blockchain applications and integrations to contribute to our expanding consumer and B2B initiatives. Our focus areas include self-custody wallets, DeFi Trading, on-chain asset delivery, and innovating on what the future of Web3 means.

What you will do

• Contribute to building and expanding our cutting-edge DeFi Trading infrastructure from the ground up
• Play a key role in managing the self-custody wallet infrastructure powering our consumer application
• Integrate with a diverse range of L1/L2/L3 networks and liquidity protocols
• Engage with an ever-growing landscape of blockchains and networks, spanning the DeFi ecosystem and wallet infrastructure development (currently supporting Bitcoin, Ripple, Ethereum/EVM, and Solana, with more to come)
• Collaborate closely with Product Managers to develop innovative solutions and implementation strategies for new features and improvements
• Participate in estimations, planning, and execution of projects, features, and integrations as a valued contributor
• Develop and maintain thoroughly tested, high-quality, and performant code

What you will be working with/on

You will be instrumental in building and maintaining backend, frontend, and mobile applications as part of a collaborative team of developers. You can anticipate regular collaboration with product designers, product managers, data analysts, ML engineers, and other departments, reflecting our strong cross-functional engineering culture. Our current primary tech stack utilizes Typescript with React/React Native (via Expo)

About You

Experienced in Web3 Development: We are interested in candidates with prior experience in the Web3 space. This could include projects involving meme coins, DeFi trading platforms, smart contracts, NFTs, wallets, decentralized applications (DApps), or other related areas

Understanding of Cryptocurrency Wallet Infrastructure: An understanding of cryptocurrency wallet infrastructure across various networks (such as Ethereum, Bitcoin, Solana, Ripple, or others)

Experienced with RPC Interaction: Experience working with Remote Procedure Calls (RPC) to interact with blockchains is valuable. This could involve using libraries like viem, ethers, solana/web3.js, or similar JavaScript frameworks to broadcast transactions

Have a Working Knowledge of Token Standards & EIPs: A working knowledge of common token standards like ERC-20 and SPL-20, and Ethereum Improvement Proposals (EIPs) specifically around account abstraction, would be beneficial

Experienced Building Scalable Blockchain Infrastructure: Experience in building and scaling infrastructure that interacts with blockchain networks is highly desirable

(Bonus) Familiar with Digital Asset & NFT Minting: Familiarity with infrastructure for creating (minting) digital assets and NFTs is a nice to have, particularly within the Ethereum ecosystem