Web3 React Security Jobs in London, United Kingdom

Hi, we’re MoonPay. We’re here to onboard the world to the decentralized economy.Why?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.What we doAt 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 Site Reliability Engineering at MoonPay is responsible for providing a resilient, secure, production-ready platform that enables MoonPay to safely deploy applications and services in a self-serve, repeatable manner. We believe that SRE should support both our product delivery and operational teams by surfacing data from our production environment and driving meaningful change based upon what we learn from it.

🚀 What you will do

• In the short term we need to increase the resiliency and reliability of our current PaaS solution with things such as:
• Improving the maintainability of our infrastructure as code
• Building dashboards, monitoring & alerting mechanisms with Datadog
• Load testing and performance tuning our production services
• Lifecycling and maintenance of our Kubernetes clusters
• In the medium to long term you’ll get to:
• Implement new and shiny technologies on top of Kubernetes as you see fit to ensure our tech can scale with the business.
• Develop and integrate solutions with a bias for automation in order to improve and maintain reliability across the production estate and make recovery easier.
• Design and track metrics for site uptime and performance ensuring high levels of visibility are maintained.
• Own the deployment pipelines and continuously improve our monitoring and alerting capabilities.
• Collaborate closely with all other engineering functions to provide timely feedback from our environments.
• Support Engineering on their journey to deliver better software, faster and more safely (think “It’s OK to deploy on Fridays” 😎).

💻 What you will be working with

• Typescript
• Node.js
• TypeORM, TypeDI, TypeGraphQL and routing-controllers
• React and NextJS hosted on Vercel
• Google Cloud Platform
• Postgres
• Redis
• Bull, BullMQ
• DataDog
• ArgoCD 
• Kubernetes
• GitHub
• Jest

🧑‍🚀 About You

• Strong systems administration skills, know the difference between a container and a virtual machine, and know your way around a Linux terminal
• Platform engineering/SRE experience at leading startups or fast growing tech companies
• Either experience with some of our tech stack or are confident you can cross train and up skill quickly
• Experience working in a regulated industry
• Confident working with and guiding developers on monitoring and logging of complex systems at scale
• Worked on complex projects
• Work collaboratively with different teams i.e. Security, Data, Engineering
• Want to forge and own MoonPays reliability & recovery processes
• Have at least a basic understanding of complex reliability structures, theories, principles, and best practices
• Worked with JavaScript codebases and frameworks e.g Typescript, Node.JS and React

We’re looking for people who live our core values, those who strive for excellence and want to leave a lasting legacy  on the global financial system. Our values:B - Be HungryL - Level UpO - Own ItC - Crypto CuriousK - KaizenWhat’s in it for you💰Competitive salary package 🤝 Equity package: We believe 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.🏝 Unlimited holidays: We give you the autonomy to choose when to work (and when to switch off)🌍 Hybrid working schedule: Work fully remotely or your nearest Moonbase, the choice is yours 🩺 Private Healthcare benefits: To protect you and your loved ones 🍼 Enhanced parental leave: So you can spend more time with your loved ones without a second thought📚 Annual training budget: We support your training journey every step of the way 🪑 Home office setup allowance: Create the home office of your dreams 👛 Remote working allowance: Those working fully remotely get a little extra for utilities 💰 Monthly budget to spend on our products and zero fee crypto transactions: Cultivate your inner DEGEN 💰 Employee referral programme: Great people know great people, refer them to receive 10K in USDC ✈️ Regular remote company offsites: Meet your colleagues regularly for high impact in person sessions and hackathons 🚀 Working in a disruptive and fast-growing company where excellence is rewarded What’s it like to work at MoonPay?At MoonPay, you’ll work alongside driven, resourceful people who are passionate about excellence in everything they do. Kaizen is more than just a saying here, it’s a mindset. We encourage you to think big, take risks, and push the boundaries of what’s possible, knowing you have the support of a team that wants to see you grow. We’re listed in the Sunday Times best places to work guide and consistently strive to provide an environment where everyone feels they can their best work.Whether you’re remote or collaborating with teammates around the world, you’ll find opportunities here to do the best work of your career while shaping the future of the decentralized economy.Commitment To DiversityResearch 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 learnt, diversity cannot.Please let us know if you require any accommodations for the interview process, and we’ll do our best to provide assistance. At MoonPay we believe that every voice matters. We strive to create a mindful and respectful environment where everyone can bring their authentic self to work, and experience a culture that is free of harassment, racism, and discrimination. That’s why we are committed to diversity and inclusion in the workplace and are a proud equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including, but not limited to, hiring, recruiting, promotion, termination, layoff, and leave of absence.MoonPay is also committed to providing reasonable accommodations in our job application procedures for qualified individuals with disabilities. Please inform our Talent Team if you need any assistance completing any forms or to otherwise participate in the application process.Please be aware that MoonPay does not request an AI-led interview without seeing a recruiter or team member from MoonPay on video call. We won't ask for your personal identification documents or any money from you during your interview process with us. Be fraud smart! If you receive an email - claiming to be from MoonPay - but from an email address ending in anything other than @moonpay.com, please be aware that this is not us.We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. 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.