At a Glance
- Tasks: Design and improve high-volume transaction systems in the exciting world of blockchain.
- Company: Join MoonPay, a leading innovator in the crypto space with a collaborative culture.
- Benefits: Enjoy competitive salary, equity options, flexible time off, and wellness perks.
- Other info: Dynamic environment with excellent career growth and learning opportunities.
- Why this job: Make a real impact in the future of value movement and work with cutting-edge technology.
- Qualifications: Strong backend engineering skills and experience with live blockchain networks required.
The predicted salary is between 63000 - 77000 £ per year.
About MoonPay
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: Forbes' America's Best Startup Employers 2026. 2nd in Crypto Services on Fortune's inaugural Crypto 100, The Sunday Times Best Places to Work two years running.
Research has shown that women are less likely than men to apply for this role if they do not have experience in 100% of these areas. Please know that this list is indicative, and that we would still love to hear from you even if you feel that you are only a 75% match. Skills can be learned, diversity cannot.
What You Will Do
- Transaction 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 You
Must-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
- Aware 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 Bandings: $190,000 - $255,000
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 honour 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
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. 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.
Senior Blockchain Platform Engineer employer: MoonPay
MoonPay is an exceptional employer that prioritises employee engagement and organisational effectiveness, offering a dynamic hybrid work environment. With a strong focus on professional growth, employees are encouraged to develop their skills while collaborating with diverse teams across the globe. The company fosters a high-performance culture, ensuring that every team member has the opportunity to contribute meaningfully to its innovative mission.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Blockchain Platform Engineer
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at MoonPay or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to MoonPay.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like MoonPay.
✨Explore Job Boards Specifically for Tech Roles
Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like MoonPay that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!
We think you need these skills to ace Senior Blockchain Platform Engineer
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at MoonPay.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at MoonPay and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at MoonPay
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If MoonPay uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
