Staff Engineer, Agents

What You Will Do

• Own significant areas of PayBox end-to-end, from identifying the problem and defining the approach through to building, shipping and iterating in production.
• Help take a recently launched product through its next phase of 0→1 development and growth.
• Build new payment and peer-to-peer transfer experiences designed for AI interfaces.
• Build integrations across AI platforms, applications and the wider PayBox ecosystem.
• Help develop the infrastructure and product experiences required to bring new applications and integrations onto PayBox.
• Work closely with Product to turn ambitious ideas into simple, usable experiences.
• Sweat the details of the PayBox experience — particularly onboarding and UX — and fix the friction that prevents users from successfully using the product.
• Reason from first principles about difficult technical and product problems, making pragmatic decisions without waiting for perfect information.
• Move across different parts of the product and technical stack depending on where the highest-impact problem is.
• Use AI extensively to increase your speed and output while maintaining your own technical reasoning, judgement and attention to detail.

About You

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.

Must-have experience and skills

• Exceptional technical reasoning. You have strong engineering fundamentals and can break down unfamiliar, ambiguous problems and reason towards good solutions.
• High agency. You don’t wait for perfectly defined requirements or someone else to identify what needs doing. You find important problems and take responsibility for solving them.
• End-to-end ownership. You’ve built and shipped meaningful products, projects or systems from beginning to end rather than operating within a narrowly defined area.
• Thoroughness. You care deeply about the quality of your work and sweat details others might overlook. Getting something working is the beginning, not the end.
• Strong systems thinking. You can design systems, understand technical trade-offs and make sensible architectural decisions while moving quickly.
• Product judgement. You understand that great engineering includes the experience around the technology, not just the underlying implementation.
• Comfort with ambiguity. You’re at your best in environments where there are more problems than people and priorities can change quickly.
• Independent thinking in an AI-native environment. You use AI aggressively as a tool, but you don’t outsource your reasoning to it. You understand the output, challenge it and remain accountable for what you ship.
• Deep motivation. You want ownership and responsibility and care about the outcome of the product, not simply completing the work assigned to you.

Benefits & Perks

• 💰 Competitive salary package
• 🤝 Equity package: financial freedom starts with our employees, so all employees have ownership at MoonPay
• 📈 Pay-for-performance equity bonus: those who drive outsized outcomes receive outsized rewards
• 🚀 Moonshot award: we honor exceptional impact. 10 employees twice a year, each earning a $250,000 equity grant
• 📊 Pension: employer contributions from day one
• 🎁 Employee referral program: refer great people, earn 10K in USDC
• 🏝 Flexible Time Off: choose when to work and when to switch off
• 🎂 Birthday leave: take the day off to celebrate you
• 🍼 Enhanced parental leave: more time with family, no second thought
• 🌍 Hybrid working schedule: work fully remotely or from your nearest Moonbase
• 🚆 Commuter benefits: public transport to and from the office
• 🩺 Private healthcare benefits: to protect you and your loved ones
• 🧘 Wellhub wellness membership: access to gyms, studios, classes, and wellness apps in one membership
• 🤖 Unlimited enterprise access to the latest AI tools: Claude, ChatGPT, Gemini and whatever's next
• 🍱 Lunch credit: meals covered on the days you're in the office
• 🪑 Home office setup allowance: build the home office of your dreams
• 👛 Remote working allowance: those working fully remotely get a little extra for utilities
• 🌕 Monthly product budget and zero-fee crypto transactions
• 📚 $1,000 Annual training budget: we support your learning journey
• 🎯 High Potential Program: structured development, mentorship, and stretch opportunities
• ✈️ Regular remote company offsites: high-impact in-person sessions and hackathons
• 🚲 (Ireland) Cycle to Work scheme: tax-efficient bike, gear, and safety kit
• 🔌 (UK) EV Salary Sacrifice: lease an electric vehicle through pre-tax salary