Senior Android Engineer

We’re on a mission to make migration easy.

We started building Marshmallow in 2017. Since then, we’ve grown from 3 to 700+ people, gained unicorn status, raised ~140M over three funding rounds, turned profitable, insured millions of drivers and lent millions in car loans.

But we’re only just getting started. Our goal is to become one of the largest financial services providers in the world. Over the next 10 years we’ll grow exponentially, not only by scaling our existing products, but also by building new ones.

To achieve our goals we need incredibly ambitious, commercially driven people who never settle for ‘good enough’. Marshmallowers are hungry for autonomy and ownership, and would rather improve than coast. Everyone raises standards and has an impact, with a focus on collective success over self-interest.

We’ve created an environment where curious, tenacious people win and grow together. If that sounds motivating, this could be the place for you.(Hybrid - 3 days a week in our London Office)
Engineering at Marshmallow Our engineers are at the heart of the solutions. They work on product builds from start to finish, solving lots of challenges to help us build fast, and scale up! Our engineers cover a range of skills across frontend, backend, full stack, iOS and Android, and work alongside designers, data scientists, researchers and product managers within our product teams.

Our product teams include: the Renewals team, Telematics team and the Claims team (to name a few!) Each team sets its own roadmap and QBRs, and actively pushes our codebase forward. Learn more about our teams and how our engineers work here!

The team you'd be joining

We're looking for a driven and curious senior Android engineer to join the Mobile Team as we embark on one of Marshmallow's most ambitious chapters. In 2026, we're focused on building innovative features that give our customers unbeatable prices, while gradually evolving the app into a one-stop shop for multiple products, on our way to becoming a high-engagement financial companion for migrants in the UK.

Your work will sit at the heart of that mission, helping shape the product experience that gets us there.

What you'll be doing

Join a team shaping the future of our car insurance product and multi-product offering. You'll help define what to build, pivot as priorities shift, and take initiative without waiting to be asked.

Own significant parts of our Android codebase end-to-end, establishing yourself as the go-to expert for core components and systems while actively raising the technical bar for those around you Shape how we build, not just what we build. You’ll partner with engineering and product leadership to define the technical roadmap and influence architectural decisions that will underpin Marshmallow's next chapter

Design and ship high-quality Android solutions using modern practices (Jetpack Compose, MVVM/MVI, Kotlin Coroutines, robust CI/CD) — embracing AI tooling to accelerate development, and writing code that is simple, well-tested, and built to scale

Lead medium to large projects across multiple engineers, breaking ambiguous problems into clear milestones and driving delivery with the kind of ownership that others can depend on Drive improvements to tooling, processes, and engineering culture proactively, using data to cut through ambiguity and making the team measurably faster and higher quality over time

Who are youYou thrive under pace and know how to make smart trade-offs. You weigh up risk, cut through noise, and keep delivery moving without sacrificing quality

You don't wait for problems to come to you. You spot them early, solve them proactively, and bring others along with youYou embrace change and actively seek out new tools and approaches to raise the quality and pace of what your team ships

You build trusted relationships naturally, working across product, design, and backend teams with a collaborative mindset and a shared sense of ownership over outcomes

You bring your engineering perspective into product conversations, using technical insight to challenge assumptions, spot opportunities, and help shape decisions before they become…