marshmallow - Senior Android Engineer
Requirements
• Strong commercial Android development experience, with a strong command of Kotlin and hands-on experience with Jetpack Compose and Kotlin Coroutines • A track record of shipping high-quality apps to the App Store and Google Play Store • Experience working in cross-functional teams alongside product, design, and fellow engineers to align on objectives and drive outcomes • A commitment to writing maintainable, well-tested code that enables safe and efficient development practices • Collaborates with designers and Product Managers early and often to influence how ideas take shape, ensuring decisions are grounded in real-world mobile constraints and user experience. • All new features are built in Kotlin, Jetpack Compose and Coroutines • Access to Claude Code to help engineers move faster on boilerplate, debugging, and code review. • Code is organised into local Gradle feature modules to help keep it maintainable and scalable. • We use automation as much as possible when it comes to testing our app, writing unit tests for business logic, snapshot tests for UI and automated UI tests for user interaction. • Our continuous integration tool of choice is Bitrise • We review each other's code using GitHub and automate as much of our code styling as possible using tools like lint and detekt. • We are committed to fostering the professional growth of our team members and are open to coaching Android engineers who are interested in expanding their skill sets in backend or full stack technologies. We believe in providing a supportive environment where continuous learning is encouraged, and we are happy to facilitate training and mentorship opportunities to help you achieve your career goals. • Culture interview (60 mins) • We’ll let you know if you’re invited to an interview or not. But, as a small team with a lot of applications to consider, we can’t give individual feedback on each application. • Diversity of thought • We know the best ideas come from having different perspectives in the room - and we're committed to hiring fairly, regardless of background, identity or experience. If you see yourself in this role, we'd encourage you to apply.
Responsibilities
• Join a team operating in new territory for Marshmallow. You'll help define what to build, pivot when 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 • You 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 you • You 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 requirements • Bonus scheme designed to reward high performance • Private medical insurance with Vitality, mental health support with Oliva • Personal learning budget and 2 dedicated L&D days a year • Monthly flexible benefits budget to spend as you choose • 25 days holiday plus bank holidays • 4 weeks Work From Anywhere per year • Initial call with a member from our Talent Team (30 mins) • Past Experience interview with Hiring Manager & GM of New Financial Products (30-45 mins)
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