Senior iOS Engineer | Monzo | Remote (United Kingdom)

Posted 2025-09-08
Remote, USA Full Time Immediate Start
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">🚀 We’re on a mission to make money work for everyone.</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">We’re waving goodbye to the complicated and confusing ways of traditional banking.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">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!</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">We’re not about selling products &#8211; we want to solve problems and change lives through Monzo ❤️</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><a href="https://www.youtube.com/watch?v=U62l09nB0M4" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">Hear from our team about what it&#8217;s like working at Monzo</a> ✨</p>
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<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">📍London/ UK remote | 💰 £95,000 &#8211; £150,000 base salary per year ➕ share options | <a href="https://monzo.com/careers/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">Benefits</a> | <a href="https://monzo.com/blog/technology" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">Technology</a></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">About our Mobile Engineering Practice</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Our mobile engineers have a variety of different backgrounds</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">There are ~30 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.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">We are actively creating an equitable environment for all of our engineers to thrive</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">Diversity and inclusion are a priority for us and we are making sure we have lots of support for all of our people to grow at Monzo. We provide a sponsorship framework in Engineering for women and people of colour; all of our leaders are trained on privilege awareness and we are creating partnerships with organisations dedicated to supporting underrepresented groups.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">We encourage an open and transparent working environment</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">You can get involved in any aspect of the business you are interested in and, following<a href="https://stripe.com/blog/email-transparency" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"> <strong class=" font-semibold">Stripe’s</strong></a> example, all emails in the company are visible in an email archive. We default to transparency and prefer to communicate openly in Slack rather than by email or in DMs. Our<a href="https://monzo.com/blog" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"> <strong class=" font-semibold">blog</strong></a> is an excellent place to learn even more about what we do!</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Monzo works in project-based sprints in small, interdisciplinary teams</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">We have 300+ engineers out of roughly 3,800 people in total &#8211; and we have big ambitions. There are many interesting challenges ahead, and we&#8217;re happy for people to move between teams or to specialise, whatever you prefer. As an engineer here you&#8217;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.</p>
<h2><strong class=" font-semibold">Your day-to-day</strong></h2>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">We’re searching for a product-aware <strong class=" font-semibold">Senior iOS engineers</strong> with a passion for great UI and UX to join our team. You understand the need for tested, resilient code balanced against the need to move fast and iterate.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">You’ll be working on a product that is a part of day to day life for more than 6 million people already, and your work here will shape the way that people interact with their finances.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">This role is all about collaborating across disciplines to test hypotheses and make a difference to customers. As an iOS engineer at Monzo you&#8217;ll work in a small, autonomous product squad alongside Android Engineers, Backend Engineers, User Researchers, Product Designers, Product Managers, QA Testers, Data Scientists and Business Analysts.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">Your mission will depend on the squad, but currently mobile engineers are working on the core personal banking experience, paid products, lending products, business banking and internal operations. We also have a small squad dedicated to enabling other mobile engineers to move faster.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">You and your team will be responsible for an overall company goal, rather than building a specific feature &#8211; you&#8217;ll have the opportunity to have impact on both <em>what</em> we build, and <em>how</em> we build it.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">Every week we meet as a discipline to discuss tools, techniques, problems we&#8217;re encountering across the company and work together to improve our codebase and processes.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">You&#8217;ll report to an engineering manager who will meet with you every 2 weeks 1:1, their mission is to help you develop and grow as an engineer.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Our iOS app</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">At Monzo, you&#8217;ll get to work with industry standard tools and technologies &#8211; and help us define what great looks like for iOS engineers.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">Our app is 100% Swift, built using a Model, View, View-Model architecture (MVVM). We use Coordinators to ensure we can re-use screens wherever possible, and avoid tightly coupling one screen to another. We make heavy use of protocols and extensions throughout our app.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">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.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">We persist objects using Realm when we need to.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">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.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">We&#8217;ve published some talks and blog posts about how we work:</p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200"><a href="https://monzo.com/blog/2017/07/07/working-with-backend-services-on-ios/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">Working with backend services on iOS</a></span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200"><a href="https://www.youtube.com/watch?v=jDvk7nztqHw" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">Pushing Protocols to their Limits</a></span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200"><a href="https://monzo.com/blog/2022/06/23/our-mobile-release-process-an-illustrated-story" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">Our mobile release process: An illustrated story</a></span></li>
</ul>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Our open roles are for Senior iOS Engineers at present.</strong></p>
<ul class=" text-base sm:text-lg marker:text-color list-inside list-disc text-gray-500 list-disc list-outside pl-3 mb-6">
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">You&#8217;ll care about the impact your work has on our customers, and optimise for impact rather than the number of lines of code you output</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">You are excited about and have experience in programming in Swift</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">You’ve shipped and iterated on at least one app in the App Store</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">You have a product mindset: you care about customer outcomes and you want to make data-informed decisions</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">You love turning excellent design into beautiful products</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">You’re comfortable working in a team that deals with ambiguity</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">You have an understanding of the principles of computer science</span></li>
</ul>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">The Interview Process:</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">Our interview process involves three main stages:</p>
<ol>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Initial Call</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Take home task or pair coding exercise</span></li>
<li class=" leading-snug mb-2 pl-2"><span class="text-gray-200">Final interview including a system design and a behavioural interview</span></li>
</ol>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">Our average process takes around 2-3 weeks but we will always work around your availability.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">You will have the chance to speak to our recruitment team at various points during your process but if you</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">do have any specific questions or want to talk through reasonable adjustments ahead of or during application please us at any point on <a href="mailto:tech-hiring@monzo.com" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer">tech-hiring@monzo.com</a></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">Please also use that email to let us know if there&#8217;s anything we can do to make your application process easier for you, because of disability, neurodiversity or any other personal reason</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">One of our engineers has written a detailed blog on their experience through this process, for extra details, hints and tips please see <a href="https://monzo.com/blog/2022/03/22/preparing-for-mobile-interviews-at-monzo" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">here</strong></a>.</p>
<h2><strong class=" font-semibold">What&#8217;s in it for you</strong></h2>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">💰 £95,000 &#8211; £150,000 base salary per year ➕ plus stock options + <a href="https://monzo.com/careers/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">Benefits</a>, we also provide all of our engineers with the latest MacBook Pro.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">✈️ We can help you relocate to the UK</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">✅ We can sponsor visas but please note we aren&#8217;t able to support remote working outside of the UK at the moment</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">📍 This role can be based in our London office, but we&#8217;re open to distributed working within the UK (with ad hoc meetings in London)</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">⏰ 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</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">📚 Learning budget of £1,000 a year for books, training courses and conferences</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">➕ And much more, see our full list of benefits <a href="https://monzo.com/careers/" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow"><strong class=" font-semibold">here</strong></a></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">If you prefer to work part-time, we&#8217;ll make this happen whenever we can &#8211; whether this is to help you meet other commitments or strike a great work-life balance.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">#LI-Remote</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">#LI-AL1</p>
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<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3"><strong class=" font-semibold">Equal opportunities for everyone</strong></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">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 <a href="https://monzo.com/blog/diversity-and-inclusion" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">blog</a>, 2023 <a href="https://monzo.com/blog/our-2023-diversity-and-inclusion-report" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">Diversity and Inclusion Report</a> and 2023 <a href="https://monzo.com/blog/an-update-on-our-gender-pay-gap-2023" target="_blank" class="break-all font-medium underline hover:opacity-75" rel="noopener noreferrer nofollow">Gender Pay Gap Report.</a></p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">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.</p>
<p class=" text-gray-200 text-base sm:text-lg leading-relaxed mb-3">If you have a preferred name, please use it to apply. We don&#8217;t need full or birth names at application stage 😊</p>
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