What You Will DoTransaction Infrastructure at Scale- Design and improve high-volume transaction broadcasting pipelines
- Manage transaction lifecycle
- Detect, retry, rebroadcast, and safely recover stuck transactions
Wallet & Lifecycle Management- Contribute to wallet infrastructure and automation systems
- Implement safe parallel transaction handling
- Improve monitoring, observability, and operational guardrails
- Design systems with financial correctness and reconciliation and auditability in mind
Cross-Chain & DeFi Integrations- Build infrastructure supporting cross chain and multi step flows (fiat to on-chain and vice versa)
- Handle non-atomic multi-step journeys across chains
- Design state machines and recovery strategies for partial failure scenarios
- Support routing mechanics and swap execution considerations such as price impact, liquidity changes, including MEV awareness
- Build reliable off-chain services that interact with on-chain contracts
End-to-End Engineering Ownership- Participate in estimation, planning, and execution of projects, features, and integrations
- Develop and maintain thoroughly tested, high-quality, and performant code
- Collaborate closely with Product Managers to design scalable implementation strategies
- Contribute to reliable, maintainable systems that evolve with product needs
- Participate in incident response and post-mortems
- Improve reliability, alerting, and system resilience
- Continuously evolve infrastructure to support growing volume and complexity
About YouMust-Have- Strong backend/platform engineering fundamentals
- Experience operating production systems with real uptime requirements
- Hands-on experience interacting with live blockchain networks in production
- Clear understanding of transaction lifecycle in at least 1 Blockchain and failure recovery
- You think in failure modes, not just happy paths
Strong Signals- You can explain a real production incident end-to-end
- Experience with at least 1 wallet infrastructure (Eth, Bitcoin, Solana) or custody systems
- Awareness of MEV, slippages, pricing impact and swap execution risks
- Experience with high-throughput or financial systems
Bonus points- Experience working at exchanges, custody providers, wallet infrastructure teams, or high-volume DeFi platforms
- Familiarity with UTXO-based chains (e.g., Bitcoin), including coin selection and fee bumping strategies (RBF / CPFP)
- Experience designing cross-chain or multi-step transaction orchestration systems
- Familiarity with blockchain indexing or event ingestion pipelines
- Understanding of common token standards (ERC-20, SPL) and interacting with smart contracts from backend services
Salary Bands: $150,000 - $210,000
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
