Backend Engineer III

Backend Engineer III

London Full-Time 60000 - 84000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Collaborate with a diverse team to build impactful banking products.
  • Company: Join Monzo, a forward-thinking bank with 400 engineers shaping the future of finance.
  • Benefits: Enjoy a competitive salary, flexible hours, remote work options, and a £1,000 learning budget.
  • Why this job: Make a real difference in customers' lives while working on exciting tech challenges.
  • Qualifications: Strong backend experience; no formal qualifications required—just a passion for learning.
  • Other info: Open to all backgrounds; we value diversity and encourage everyone to apply!

The predicted salary is between 60000 - 84000 £ per year.

London / UK Remote | £75,000 - £105,000 + Benefits | Technology - Engineering

About our Engineering Teams: 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. 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. We contribute to open source software as much as possible.

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. 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!

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 look out 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

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.

What’s in it for you: £75,000 - £105,000 base salary plus stock options. 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: Monzo Bank

Monzo is an exceptional employer, offering a dynamic work culture that fosters collaboration and innovation among its 400 engineers. With a strong focus on employee growth, we provide a generous learning budget and flexible working hours, allowing you to thrive in your role as a Backend Engineer III while contributing to meaningful projects that impact our customers daily. Located in London, with the option for remote work across the UK, Monzo supports a diverse and inclusive environment where every team member can make a difference.
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Contact Detail:

Monzo Bank Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Backend Engineer III

✨Tip Number 1

Familiarise yourself with the technologies mentioned in the job description, especially Go, Cassandra, and Kafka. Even if you don't have prior experience, showing a willingness to learn these tools can set you apart during the interview process.

✨Tip Number 2

Engage with Monzo's blog and any open-source projects they contribute to. This will not only give you insights into their work culture but also provide talking points during your interviews, demonstrating your genuine interest in their projects.

✨Tip Number 3

Prepare for the system design and behavioural interview stages by practising common scenarios and questions. Think about how you would approach building resilient software and be ready to discuss your thought process and past experiences.

✨Tip Number 4

Connect with current or former Monzo engineers on platforms like LinkedIn. They can provide valuable insights into the company culture and interview process, which can help you tailor your approach when applying through our website.

We think you need these skills to ace Backend Engineer III

Strong experience in backend development
Proficiency in strongly-typed programming languages (Go, Java, C, Scala)
Understanding of distributed systems
Experience with asynchronous message queues (Kafka)
Familiarity with container orchestration (Kubernetes, Docker)
Knowledge of cloud infrastructure (AWS, GCP)
Ability to write resilient software
Product mindset with a focus on customer outcomes
Data-informed decision making
Collaboration skills within cross-functional teams
Adaptability to work in ambiguous environments
Interest in learning new technologies and frameworks

Some tips for your application 🫡

Understand the Role: Before applying, make sure you fully understand the responsibilities and requirements of the Backend Engineer III position at Monzo. Familiarise yourself with the technologies mentioned in the job description, even if you don't have prior experience with them.

Tailor Your CV: Customise your CV to highlight relevant experience that aligns with the job description. Emphasise your backend development skills, any experience with strongly-typed languages, and your ability to work in a collaborative environment.

Craft a Compelling Cover Letter: Write a cover letter that showcases your passion for the role and the company. Mention specific projects or experiences that demonstrate your product mindset and your interest in building technology that impacts customers directly.

Prepare for the Interview Process: Familiarise yourself with the interview stages outlined in the job description. Prepare for the initial call, take-home task, and final interview by practising system design questions and behavioural interview techniques. Consider reviewing the blog written by one of their engineers for additional insights.

How to prepare for a job interview at Monzo Bank

✨Understand the Tech Stack

Familiarise yourself with the technologies mentioned in the job description, such as Go, Cassandra, and Kafka. Even if you don't have prior experience, showing that you've done your homework will impress the interviewers.

✨Show Your Product Mindset

Be prepared to discuss how you prioritise customer outcomes in your work. Share examples of how you've made data-informed decisions in past projects to demonstrate your product mindset.

✨Prepare for System Design Questions

Since the final interview includes a system design component, practice designing systems that are scalable and resilient. Think about how you would approach building a backend service and be ready to explain your thought process.

✨Embrace Ambiguity

The role requires comfort with ambiguity, so be ready to discuss situations where you've navigated unclear requirements or changing priorities. Highlight your adaptability and problem-solving skills.

Backend Engineer III
Monzo Bank
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  • Backend Engineer III

    London
    Full-Time
    60000 - 84000 £ / year (est.)

    Application deadline: 2027-04-07

  • M

    Monzo Bank

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