Demo

Senior Platform Engineer

monzo
Cardiff, AL Remote Full Time
POSTED ON 1/6/2026
AVAILABLE BEFORE 2/5/2026

šŸš€ 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 asĀ 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 andĀ combine their pensions with us.Ā 

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 ā¤ļø

Hear from our UK team about what it's like working at Monzo ✨


Ā 

šŸ“London / UK Remote | šŸ’°Senior Engineer Ā£95,000 - Ā£130,000 stock options Benefits | Technology - Engineering |

About Platform Engineering 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 engineer tooling.

The Infrastructure Platform team sit within the Platform Collective and are responsible for running the Kubernetes clusters which all services which 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.

Our Infrastructure Platform team Has Two Focus 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 EnvoyWe 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 work šŸ’»

Locations & Flexible Working:Ā 

Our main tech hub is in London, but our engineers live everywhere in the UK— from Brighton to the Western Isles.Ā 

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 šŸ½ļø. Teams also schedule time together often for work and play – in or around the office, or online.

What you’ll be working with:

We rely heavily on the following tools and technologies, please note direct experience in these technologies is not required and our interview process can be completed in any language:

  • 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 whilst 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

🤩We’d love to hear from you if…

  • 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

We're on the look out for L40 & L50 Platform Engineers at the moment, you can read more in our Engineering Progression FrameworkĀ 

The Interview Process:

Our interview process involves three main stages:Ā 

  1. Initial CallĀ 
  2. Take home task or pair coding exerciseĀ 
  3. Final interview: including a system design and a behavioural interviewĀ 

Our average process takes around 4 weeks but we will always work around your availability.Ā 

One of our engineers has written a detailed blog on their experience through this process, for extra details, hints and tips please see here.

What’s in it for you:

šŸ’° Ā£95,000 - Ā£130,000 base salaryāž• plus stock optionsĀ 

āœˆļøWe can help you relocate to the UKĀ 

āœ…We can sponsor visas.

šŸ“This role can be based in our London office, but we're open to distributed working within the UK (with ad hoc meetings in London).

ā°We offer flexible working hours and trust you to work enough hours to do your job well, at times that suit you and your team.

šŸ“šLearning budget of Ā£1,000 a year for books, training courses and conferences

āž•And much more, see our full list of benefits hereĀ 

#LI-Remote

#LI-HJ1


Equal opportunities for everyone

Diversity and inclusion are a priority for us and we’re making sure we have lots of support for all of our people to grow at Monzo. At Monzo, we’re embracing diversity by fostering an inclusive environment for all people to do the best work of their lives with us. This is integral to our mission of making money work for everyone. You can read more in our blog, 2024 Diversity and Inclusion Report and 2024 Gender Pay Gap Report.

We’re an equal opportunity employer. All applicants will be considered for employment without attention to age, ethnicity, religion, sex, sexual orientation, gender identity, family or parental status, national origin, or veteran, neurodiversity or disability status.

If you have a preferred name, please use it to apply. We don't need full or birth names at application stage 😊

Salary : $95,000 - $130,000

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