Software Engineer, Agents

MoonPay is for builders with something to prove.

This isn't a "work on cool crypto stuff" company. It's a high-standards, high-velocity, high-accountability company building the operating system for value movement. If the internet moves information, we move value: crypto, stablecoins, tokenized assets, and whatever comes next. Four offerings make that real: fund, tokenize, trade, and spend. 30M+ customers and 500+ ecosystem partners run on us. Licensed in the U.S. Regulated across the UK, EU, Canada, and Australia.

AI is the default operating mode here. It's woven into every role, and we expect you to use it daily. It handles the manual work so you can deliver on what actually matters.

You'll thrive here if outcomes excite you more than process, if impact motivates you more than titles, and if you want hard problems, real ownership, and teammates who love winning, building, and doing it together.

The bar is high. The pace is real. We're building for what's next, for humans and agents.

Recent recognition:

PayBox is one of MoonPay’s newest products. It enables people to transact directly through AI, connecting agents with payments, wallets and applications without requiring users to hand over their underlying credentials.

We launched PayBox recently and saw strong initial traction. Now we’re building the next phase.

There are multiple major product tracks underway: expanding PayBox across AI platforms, building peer-to-peer payment experiences, integrating with DeFi applications, growing our plugin ecosystem and significantly improving the end-to-end product experience.

We’re looking for an exceptional Staff Software Engineer to help own PayBox and take it through this next stage.

You’ll work closely with our Chief Engineer and a small, highly focused team. This is much closer to a founding engineer role than a traditional Staff engineering position. You’ll be expected to identify what matters, reason through difficult problems, make decisions and take areas of the product from idea through to production.

That could mean designing and building an entirely new PayBox capability one week and obsessing over the details of an onboarding flow the next. We care equally about ambitious technical problems and the less glamorous work required to make a product great.

We’re not looking for a specific technology or domain background. You don’t need previous crypto or MCP experience. We’re looking for an exceptional generalist engineer who can learn quickly, think independently, build end-to-end and deeply cares about what they ship.

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  Own significant areas of PayBox end-to-end, from identifying the problem and defining the approach through to building, shipping and iterating in production.

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  Help take a recently launched product through its next phase of 0→1 development and growth.

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  Build new payment and peer-to-peer transfer experiences designed for AI interfaces.

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  Build integrations across AI platforms, applications and the wider PayBox ecosystem.

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  Help develop the infrastructure and product experiences required to bring new applications and integrations onto PayBox.

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  Work closely with Product to turn ambitious ideas into simple, usable experiences.

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  Sweat the details of the PayBox experience — particularly onboarding and UX — and fix the friction that prevents users from successfully using the product.

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  Reason from first principles about difficult technical and product problems, making pragmatic decisions without waiting for perfect information.

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  Move across different parts of the product and technical stack depending on where the highest-impact problem is.

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  Use AI extensively to increase your speed and output while maintaining your own technical reasoning, judgement and attention to detail.

We’re deliberately not defining the ideal candidate by a particular technology stack or domain.

There are three things we care deeply about: technical ability, motivation and thoroughness. We’re looking for someone exceptional across all three.