Senior Platform Engineer

About this role

<div class="content-intro"><p><strong><em>🚀 We’re on a mission to make money work for everyone.</em></strong></p> <p>We’re waving goodbye to the complicated and confusing ways of traditional banking.</p> <p>After starting as a prepaid card, our product offering has grown a lot in the last 10 years in the UK. As well as&nbsp;<a href="https://monzo.com/current-account/personal">personal</a> and <a href="https://monzo.com/business-banking">business</a> bank accounts, we offer <a href="https://monzo.com/current-account/joint-account">joint accounts</a>, <a href="https://monzo.com/current-account/16-17">accounts for 16-17 year olds</a>, a <a href="https://monzo.com/current-account/under-16s">free kids account</a> and <a href="https://monzo.com/flex">credit cards</a> in the UK, with more exciting things to come beyond. Our UK customers can also <a href="https://monzo.com/savings">save</a>, <a href="https://monzo.com/investments">invest </a>and&nbsp;<a href="https://monzo.com/pensions">combine their pensions</a> with us.&nbsp;</p> <p>With our hot coral cards and get-paid-early feature, combined with financial education on social media and our award winning customer service, we have a long history of creating magical moments for our customers!</p> <p>We’re not about selling products - we want to solve problems and change lives through Monzo ❤️</p> <hr> <p>&nbsp;</p></div><p>📍London / UK Remote | 💰<a href="https://monzo.com/documents/engineering-progression-framework-v4-0.pdf">Senior Engineer</a> £95,000 - £130,000&nbsp; + <em>&nbsp;</em><strong><em>Incentive Awards tied to your performance</em></strong><em> </em>&nbsp;<a href="https://monzo.com/careers/">Benefits</a> | <a href="https://monzo.com/blog/technology">Technology</a> - Engineering |</p> <p><em><strong>About Platform Engineering at Monzo:</strong></em></p> <p><em>The Platform Collective builds and maintains the infrastructure, tools and processes that sets the rest of Monzo technology teams up for success. We work on a wide range of shared infrastructure, services and engineer tooling.</em></p> <p><em>The Infrastructure Platform team sit within the Platform Collective and are responsible for running the Kubernetes clusters, service mesh and networking that all of Monzo's microservices run on. Our team is made up of backend engineers and cloud infrastructure experts, using our experience and software engineering skills to solve problems and manage our cloud infrastructure.</em></p> <p>&nbsp;</p> <p><em><strong>Our Infrastructure Platform team Has Two Focus Areas</strong></em></p> <ul> <li style="font-style: italic;"><em>We build and centrally manage the cloud infrastructure that underpins technology at Monzo, running components like Kubernetes and Envoy across AWS and GCP.</em></li> <li style="font-style: italic;"><em>We help other platform teams to succeed at using cloud infrastructure by abstracting away the complexity and enabling them to solve real customer problems</em></li> </ul> <p><em>We’re investing heavily in this team to support Monzo’s ambitions to grow from 10 to 20 million customers, expand the range of products to improve our customers’ financial lives and set up the foundations for scaling Monzo across the globe.</em></p> <p>&nbsp;</p> <p><em><strong>How we work 💻</strong></em></p> <p><em><strong>Locations &amp; Flexible Working:&nbsp;</strong></em></p> <p><em>Our main tech hub is in London, but our engineers live everywhere in the UK— from Brighton to the Western Isles.&nbsp;</em></p> <p><em>We value meeting in person but there’s no pressure to come into the office, even if you're nearby. We believe you'll do your best work if you are where you want to be. If you live outside of London and we ask you to come into the office, Monzo will support you with the costs. ✨</em></p> <p><em>Our offices are naturally social, especially Tuesdays, Wednesdays and Thursdays, which happen to line up with our twice-weekly Monzo lunches &amp; treat Thursdays 🍽️. Teams also schedule time together often for work and play – in or around the office, or online.</em></p> <p><em><strong>What you’ll be working with:</strong></em></p> <p><em>As a Platform Engineer at Monzo, you will work across the full breadth of our core infrastructure and application platform. This role involves a <strong>balanced split</strong> of responsibilities between two critical areas:</em></p> <ol> <li style="font-style: italic;"><em><strong>Platform &amp; Infrastructure Engineering:</strong> Enhancing and maintaining our foundational tools and systems.</em> <ul> <li style="font-style: italic;"><em>Working hands-on with our <strong>Kubernetes</strong> clusters, <strong>AWS</strong> infrastructure, and configuration management using <strong>Terraform</strong>.</em></li> <li style="font-style: italic;"><em>Integrating and managing various <strong>open-source components</strong> to provide robust, scalable primitives for our engineering teams.</em></li> </ul> </li> <li style="font-style: italic;"><em><strong>Software &amp; Backend Engineering:</strong> Building and maintaining the services that abstract and orchestrate our infrastructure.</em> <ul> <li style="font-style: italic;"><em>Designing and implementing <strong>backend services</strong> (APIs, controllers, etc.) that provide a simplified, self-service experience for other engineers.</em></li> <li style="font-style: italic;"><em>Developing software for complex projects like infrastructure migrations, high-scale traffic management, or security tooling.</em></li> </ul> </li> </ol> <p>&nbsp;</p> <p><em>We rely heavily on the following tools and technologies, please note </em><strong><em>direct experience in these technologies is not required</em></strong><em> and our interview process can be completed in any language:</em></p> <ul> <li><em><a href="http://golang.org/">Go</a> to write our application code (there’s an excellent interactive Go tutorial<a href="https://tour.golang.org/welcome/1"> here</a>), in platform