iOS Engineer

18 Minutes ago • All levels • $78,000 PA - $110,000 PA

Job Summary

Job Description

Monzo is seeking product-focused iOS Engineers to evolve its native mobile app, which is used by over 12 million people. Engineers will work in small, autonomous product squads, contributing to overall company goals and shaping how users interact with their finances. The role involves building polished user experiences, balancing resilient code with fast iteration, and working across various product areas from personal banking to customer support tools. The team uses Swift, SwiftUI, and The Composable Architecture, with a strong emphasis on testing and open-source contributions. This role offers the opportunity to make a significant impact on a widely used financial product within a supportive and collaborative environment.
Must have:
  • Care about the impact your work has on customers and optimize for outcomes
  • Experience in programming in Swift
  • Shipped and iterated on at least one app in the App Store
  • Product mindset: care about customer outcomes and make data-informed decisions
  • Love turning excellent design into beautiful products
  • Comfortable working in a team that deals with ambiguity
  • Understanding of computer science principles
Perks:
  • £78,000 - £110,000 base salary per year
  • Stock options
  • Latest MacBook Pro
  • Relocation assistance to the UK
  • Visa sponsorship (for UK remote/London office)
  • Flexible working hours
  • Learning budget of £1,000 a year for books, training courses and conferences
  • Monzo lunches & treat Thursdays (in office)
  • Support for work/life balance (children drop-offs, dog walking, appointments, family support)

Job Details

🚀 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 ❤️

Hear from our UK team about what it's like working at Monzo

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📍London/ UK remote | 💰 £78,000 - £110,000 base salary per year ➕ share options | Benefits | Technology

About our Mobile Engineering discipline

Our mobile engineers have a variety of different backgrounds

There are ~40 iOS engineers at Monzo and we’re looking for more to join the team. We have several non-graduates; only some of us studied Computer Science; some of us have worked in huge companies; some have only ever worked in startups; others are former consultants. As long as you enjoy learning new things, we’d love to talk to you.

Monzo works in small, interdisciplinary teams

We have around 400 engineers out of roughly 4,500 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!

Your day-to-day

We’re searching for product-focused iOS engineers to evolve our native mobile app. You’ll take pride in building polished user experiences, and you’ll balance the need for well-tested resilient code with moving fast and iterating.

You’ll be working on a product that is a part of day to day life for more than 12 million people already, and your work here will shape the way that people interact with their finances.

As an iOS Engineer at Monzo you'll work in a small, autonomous product squad alongside Android Engineers, Backend Engineers, User Researchers, Product Designers, Product Managers, QA Testers, and Data Scientists.

You and your team will be responsible for an overall company goal, rather than building a specific feature - you'll have the opportunity to have impact on both what we build, and how we build it. Mobile engineers at Monzo work on everything from the personal banking product to customer support tools. We also have a small mobile platform squad dedicated to enabling other engineers to move faster.

Every week we meet as an iOS discipline to discuss tools, techniques, problems we're encountering across the company and work together to improve our codebase and processes.

You'll report to an engineering manager who will meet with you every 1-2 weeks 1:1. They’re dedicated to helping you grow and develop as an engineer.

Our iOS app

Our app is 100% Swift and our latest features are built in SwiftUI and using elements of The Composable Architecture. Historically we built using a Model, View, View-Model architecture (MVVM). We use Coordinators to ensure we can re-use flows wherever possible, and avoid tightly coupling one screen to another. We make heavy use of protocols and extensions throughout our app.

Our networking stack is built upon Alamofire, using a generic interface to easily de-serialise objects of a certain type, and we mirror our backend micro-service architecture by building individual services to house our API logic. We log liberally to get alerted when they’re triggered in Sentry which we also use to monitor crashes.

Our testing stack comprises of unit tests for business logic, stubbed API tests for pseudo-integration tests, snapshot tests for UI, and XCUITest for testing user input and sequencing.

We've published some talks and blog posts about how we work:

You should apply if

  • You care about the impact your work has on our customers, and optimise for outcomes rather than the number of lines of code you output
  • You’re excited about and have experience in programming in Swift
  • You’ve shipped and iterated on at least one app in the App Store
  • You have a product mindset: you care about customer outcomes and you want to make data-informed decisions
  • You love turning excellent design into beautiful products
  • You’re comfortable working in a team that deals with ambiguity
  • You have an understanding computer science principles

The Interview Process

Our interview process involves three main stages:

1. Initial Call

2. Take home task or pair coding exercise

3. Final interview including a system design and a behavioural interview

Our average process takes around 2-3 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 or want to talk through reasonable adjustments ahead of or during application please us at any point on tech-hiring@monzo.com

Please also use that email to let us know if there's anything we can do to make your application process easier for you, because of disability, neurodiversity or any other personal reason.

There’s a detailed blog on the interview process, for extra details, hints and tips.

How we work 💻:

Locations & Flexible Working :

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 there’s no pressure to come into the office, 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. 🕒✨

Work the way that works for you with Monzo! 💼

What's in it for you

💰 £78,000 - £110,000 base salary per year ➕ plus stock options + Benefits, we also provide all of our engineers with the latest MacBook Pro.

✈️ We can help you relocate to the UK

✅ We can sponsor visas but please note we aren't able to support remote working outside of the UK at the moment

📍 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 here

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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, 2024 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.

If you have a preferred name, please use it to apply. We don't need full or birth names at application stage 😊

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👤 Identity survey

Our goal at Monzo is to make money work for everyone. To do that, working at Monzo must work for everyone. We want to create an equitable, engaged and innovative workplace which gives people from all backgrounds the support they need to thrive and grow.

Making Monzo work for everyone starts right at the beginning of every Monzonaut's journey: when they apply to work here. This demographic survey will help us better understand the people who apply to work at Monzo. It'll help us see how different groups progress through our hiring process, and where we need to make improvements to be more inclusive. If you choose to fill it out, all of the information you give us is:

  • Voluntary. And we've included a "prefer not to say" option for every question. It'd be helpful if you still fill out the survey even if you choose "prefer not to say" for every question, as it's useful for us to understand & record this. We won't know if you choose to fill this survey in or not.
  • Anonymous to Monzo. We can't tie your responses to you and they won't make a difference to the outcome of your application. We'll only use grouped responses for equal opportunities monitoring in our hiring process.

For more information on how we'll use this data, please read our candidate privacy notice.

By filling out this survey, you agree that we can use your responses for the purposes we've mentioned above. You are not letting us know if we need to make any adjustments to the hiring process because of disability or neurodiversity - to do this please email us.

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About The Company

We’re building the best bank in the world - a bank you'd be proud to use - and that means bringing together a talented team with diverse experiences, backgrounds and skills. We believe there should be an alternative to the banking of the past: we're focused on solving problems, rather than selling financial products, making your financial life simpler, and giving you complete control from your smartphone. Internally, we encourage an open, collaborative, inclusive working environment. We contribute to open source software, and we continually engage with our wonderful community. We’re hiring talented, creative problem-solvers to help us build the bank of the future.

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