Backend Engineer III

Backend Engineer III

Full-Time 85000 - 110000 £ / year (est.) Home office (partial)
Referrals Only

At a Glance

  • Tasks: Join our team to build innovative banking solutions and tackle exciting tech challenges.
  • Company: Monzo, a forward-thinking bank with a vibrant engineering culture.
  • Benefits: Competitive salary, performance incentives, flexible hours, and a generous learning budget.
  • Other info: Diverse and inclusive team with opportunities for growth and remote work.
  • Why this job: Make a real impact on products used by millions while enjoying work-life balance.
  • Qualifications: Experience in backend development and a passion for customer-focused technology.

The predicted salary is between 85000 - 110000 £ per year.

London or UK Remote | Compensation: 85,000 - 110,000 + Incentive Awards tied to your performance + Benefits

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 every day 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.

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. 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. Work the way that works for you with Monzo!

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 so whilst 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:

  • Go to write our application code
  • Cassandra for most persistent data storage
  • Kafka for our asynchronous message queue
  • 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.

What’s in it for you: 85,000 - 110,000 base salary + 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. And much more, see our full list of benefits.

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

Backend Engineer III employer: Referrals Only

As a Remote Senior Lead Product Designer at our innovative company, you'll be part of a dynamic design team dedicated to creating impactful solutions that make money work for everyone. We foster a collaborative and inclusive work culture, offering extensive employee growth opportunities and a competitive benefits package, all while allowing you the flexibility of remote work from anywhere in the UK. Join us to contribute to meaningful projects and experience a supportive environment that values creativity and professional development.

Referrals Only

Contact Details:

Referrals Only Recruitment Team

We think you need these skills to ace Backend Engineer III

Backend Development
Strongly-Typed Languages (Go, Java, C, Scala)
Distributed Systems
Resilient Software Design
Data-Informed Decision Making
Team Collaboration
Ambiguity Management