Senior Backend Engineer

Monzo
London, UK
1 day ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Compensation
£105,000.0 - £135,000.0
Working hours
Regular working hours

Tech stack

Java (Programming Language) Amazon Web Services Data Infrastructure Distributed Systems Machine Learning Web Applications ReactJS Backend Kubernetes Free and Open-Source Software Docker

Job description

??London or UK Remote ?? Senior Engineer (L50) £105,000 - £135,000 + Incentive Awards tied to your performance + Benefits Technology - Engineering

About our Engineering Teams:

We have around 650 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.

These range from the products our customers use everyday to underlying infrastructure, security, payments and finance, customer operations, financial crime, and data, to name just a few areas. As a bank, there is scope for impact across a huge number of opportunities.

We contribute to open source software as much as possible. Our blogis a good place to learn even more about what we do!

Your day-to-day

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 wider collectives (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. All of our collectives are doing innovative work, many of which have machine learning and AI at the forefront- from fighting financial crime to building smarter financial tools - and you may have the opportunity to join a collective that gives you direct exposure to this exciting space.

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.

How we work ??

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 we don’t have a mandated requirement on office attendance, 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.

Set up a work schedule that delivers impact and fits your life:

At Monzo, we value connections, flexibility, and wellbeing. We keep our meetings during core hours to stay connected and believe in maintaining work/life balance.

You’ll be empowered to manage your work in a way that suits you and your team, giving you the freedom for children drop-offs and pick-ups, walking your dog or adventurous cat, avoiding peak commuting times or gym slots, appointments, or supporting your family in an emergency ???

If you prefer to work part-time, we’ll make this happen whenever we can - whether this is to help you meet other commitments or strike a great work-life balance., * Kubernetes and Docker to schedule and run our services

  • Envoy Proxy for RPC
  • AWS for most of our production infrastructure and GCP for most of our data infrastructure
  • React for 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.

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:

?? £105,000 - £135,000 + Incentive Awards tied to your performance

??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

Requirements

  • 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

Apply for this position

This job is hosted externally. Click below to view the full posting and apply.

Apply on www.totaljobs.com
Prepare application

Good distractions

Talks and stories from around this role — technically off-topic, practically not.

1:38 min

Transitioning into backend engineering from web development

Stefan Lingler Stefan Lingler +1 · Coffee With Developers

1:52 min

Structuring and scaling the backend engineering team

Stefan Lingler Stefan Lingler +1 · Coffee With Developers

2:07 min

Inspecting default bridge architectures and custom Docker networks

Oliver Seitz Oliver Seitz · World Congress 2025

1:21 min

Exploring the target application for front end tests

Anna Mcdougall · JS Congress

1:17 min

Storyblok engineering context and tech stack overview

Sebastian Gierlinger Sebastian Gierlinger · World Congress 2025

2:34 min

Docker sandbox architecture and microVM environment integration

Manuel de la Peña Manuel de la Peña · World Congress 2026 Europe

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