Senior Platform Engineer
Listed on 2025-11-13
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IT/Tech
Systems Engineer, Cloud Computing, SRE/Site Reliability
About Monzo
We’re on a mission to make money work for everyone. We’re waving goodbye to the complicated and confusing ways of traditional banking. After starting as a prepaid card, our product offering has grown a lot in the last 10 years in the UK. As well as personal and business bank accounts, we offer joint accounts, accounts for 16-17 year olds, a free kids account and credit cards in the UK, with more exciting things to come beyond.
Our UK customers can also save, invest and combine their pensions with us. 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! We’re not about selling products - we want to solve problems and change lives through Monzo ❤️ Hear from our UK team about what it's like working at Monzo ✨
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 engineering tooling.
The Infrastructure Platform team sits within the Platform Collective and is responsible for running the Kubernetes clusters which all services that power the bank run on, our service mesh and networking setup and managing how other teams interact with our cloud environments. 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.
TwoFocus Areas
We build and centrally manage the cloud infrastructure that underpins technology at Monzo, running across AWS and GCP. We run components like Kubernetes and Envoy.
We help other platform teams to succeed at using cloud infrastructure by abstracting away the complexity and enabling them to solve real customer problems.
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.
How We WorkLocations & Flexible Working:
Our main tech hub is in London, but our engineers live everywhere in the UK—from Brighton to the Western Isles. 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.
Our offices are naturally social, especially Tuesdays, Wednesdays and Thursdays, which happen to line up with our twice-weekly Monzo lunches & treat Thursdays 🍽️. Teams also schedule time together often for work and play – in or around the office, or online.
- Go to write our application code (there’s an excellent interactive Go tutorial here), in platform we build services to manage parts of the platform
- Kubernetes – most workloads we run are on Kubernetes with this team being responsible for the underlying cluster's management
- AWS and GCP – while our primary platform is in AWS our footprint in GCP is continually growing and we are increasing our maturity across both of these platforms
- Terraform – is primarily how we manage any resources deployed into the cloud
- Envoy Proxy – for our RPC service mesh
- You have experience working with AWS and/or GCP
- You have experience working with Kubernetes
- You’d be excited to build a platform that enables success for everyone at Monzo
- You’re comfortable working in a team that deals with ambiguity
- You’re naturally inclined to solve problems through automation
- You have some experience with strongly typed languages, writing and working on backend software
- You’re curious about systems and diving deep to investigate issues
Our interview process involves three main stages:
- Initial Call
- Take home task or pair coding exercise
- Final interview: including a system design and a behavioural interview
Our average process takes around 4 weeks but we will always work around…
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