Backend Engineer III Cardiff, London or Remote (UK)

Monzo
Cardiff
3 weeks ago
Applications closed

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We’re on a mission to make money work for everyone.

We’re waving goodbye to the complicated and confusing ways of traditional banking.

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.

We have around 400 engineers across Monzo who design and build our in-house banking platform. We have big ambitions for the future, and technology plays a big role in creating a bank our customers want, so engineers at Monzo collaborate across disciplines to solve interesting challenges throughout the company.

This role is all about collaborating with your team to make a difference to your customers. As a backend engineer, you’ll work in a squad alongside other disciplines like product managers, marketers, user researchers, designers, mobile engineers, web engineers, data analysts, business analysts, writers, and more!

Together you’ll build and support a particular part of Monzo. Our squads belong to our widercollectives(a word we use to describe self-governing business units of ~100 people). They are; Core Banking, Business Banking, Wealth, Borrowing, Growth, Payments, Platform, Fincrime, Security & Expansion.

They’re all looking for additional Backend Engineers right now; we do a standard interview process across all our collectives, and at the end, we will find the best match for you based on your skills, experience, preferences, and aligning with the business need!

Our backend engineers have a variety of different backgrounds. As long as you enjoy learning new things, we’d love to talk to you. We do not ask for formal qualifications or degree requirements for any of our engineering roles.

You should apply if:

  • you have strong experience working on the backend of a technology product
  • you want to be involved in building a product that you (and the people you know) use every day
  • you have a product mindset: you care about customer outcomes and you want to make data-informed decisions
  • you’re comfortable working in a team that deals with ambiguity
  • you’re interested in distributed systems and writing resilient software
  • you have some experience with strongly-typed languages (Go, Java, C, Scala, etc.).
  • you think you’d enjoy the kind of work we’re doing

We're on the lookout for L40 Engineers at the moment; you can read more in our Engineering Progression Framework. You will be interviewed across the whole framework, so if you're not sure what level you're aiming for, chat to your recruiter!

Not ticking every box? That’s totally okay! Studies show that women and people of colour might hesitate to apply unless they meet every single requirement. At Monzo, we’re dedicated to creating a diverse and welcoming team. If you’re passionate about this role and keen to learn and grow with us, we encourage you to apply— even if you don’t have everything that's listed just yet. Drop us your application, we’d love to hear from you!

What you’ll be working on:

We hire very technically agnostic sowhilst we use the below technologies, we do not expect prior knowledge. You will be fully supported in our organised onboarding to get up to speed in the below:

  • Goto write our application code (there’s an excellent interactive Go tutorialhere)
  • AWSfor most of our production infrastructure andGCPfor most of our data infrastructure
  • Reactfor our public web apps and internal tools
  • We also have physical datacenters with actual cables to connect to various third parties

The Interview Process:

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 your availability.

You will have the chance to speak to our recruitment team at various points during your process, but if you do have any specific questions ahead of this, please contact us on .

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

What’s in it for you:

We can help you relocate to the UK.

We can sponsor visas.

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).

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.

Learning budget of £1,000 a year for books, training courses, and conferences.

And much more, see our full list of benefitshere.

We're usually always hiring for Backend Engineers, so there's no closing date for this job.

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, 2023 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.

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