KeyStep

Staff Backend Engineer

Monzo
Cardiff, UK
24 days ago
full-timeremote

Skills & Technologies

GoBackendReactKafkaCassandraAWSDockerKubernetesSocial MediaCustomer ServiceMakeBenefits

Job Description

🚀 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 as 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 and combine their pensions with us.

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 ❤️

📍London / UK Remote | 💰 Staff Backend Engineer (L60) £115,000 - £150,000 + Incentive Awards tied to your performance + Benefits | Technology - Engineering

About our Engineering Teams

We have around 300 engineers out of roughly 2,500 people in total - and we have big ambitions. There are many interesting challenges ahead, and we're happy for people to move between teams or to specialise, whatever you prefer. As an engineer here you'd be able to work directly with anyone across the company, and we run regular knowledge-sharing sessions so you’ll learn heaps about everything from how banks work to effective communication.

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

What you’ll be working on

We rely heavily on the following tools and technologies

Go to write our application code (there’s an excellent interactive Go tutorial here)

Cassandra for most persistent data storage

Kafka for our asynchronous message queue

Envoy Proxy for RPC

Kubernetes and Docker to schedule and run our services

AWS for most of our infrastructure

React for internal web dashboards

We also have

Company & Role Analysis

JobSeeker+
Likely perks
Private MedicalPension25+ Days HolidayStock OptionsLearning BudgetFlexible Hours
Culture & working style

Neutral 2–4 sentence summary of what working at this company is like, drawn from public reviews and press coverage. Tone, collaboration style, pace, benefits highlights.

Market salary range

£45,000 – £60,000 (Glassdoor, Levels.fyi, 2025)

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Working at Monzo

Monzo aims to foster an inclusive, caring, and empathetic workplace culture, prioritizing problem-solving for customers. The company promotes an open, collaborative environment, entrusting employees with flexible working hours and autonomy. They are committed to diversity and inclusion, striving to ensure every team member feels a sense of belonging and can perform their best work.

Perks

Remote WorkingFlexible HoursPensionLearning BudgetParental LeaveMental Health SupportLife Insurance25+ Days Holiday

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