Requirements

Strong experience building and shipping Android applications in Kotlin and Jetpack Compose
Experience owning technical decisions and designing architecture for mobile products
Ability to take ambiguous product ideas and turn them into clear technical plans and incremental milestones
Strong product judgment, with the ability to use customer insight and data to inform decisions and challenge assumptions
Experience working closely with cross-functional partners such as product, design, analytics, and backend engineering
Commitment to writing testable, maintainable code and holding a high bar for engineering quality
Experience with software architecture patterns commonly used in Android development
Understanding of REST API design, including the ability to help shape API contracts where needed
Confidence working autonomously and taking ownership of delivery end-to-end
Strong communication skills, including the ability to explain technical concepts clearly to non-technical audiences
Ability to produce clear technical documentation and diagrams
Experience with end-to-end “BRO” ownership of software - Build it, Run it, Own it, including observability and reliability

Nice to Haves

Experience with CI/CD tooling such as GitHub Actions
Experience with observability tooling and practices
Experience working with experimentation and using product signals to guide iteration
Experience building accessible, high-quality mobile experiences
Interest in AI-assisted coding tools such as Cursor or Claude Code
Experience collaborating closely with iOS engineers on parallel mobile product development

Leading the rebuild and modernisation of the Wise Currency Converter app
Architecting and building new mobile products from the ground up
Working closely with iOS engineers to build products across both platforms, maintaining a high bar for quality and keeping core features and customer experience aligned
Working closely with product managers, designers, analysts, and other engineers to shape ideas, define requirements, and turn them into simple, high-quality customer experiences
Owning Android development end-to-end, from technical design through implementation, release, and iteration
Own the observability and reliability of the app, including incident management and working hours support
Making architecture decisions and helping define APIs where needed to support product development
Providing technical guidance through thoughtful code review and collaboration
Contributing to a strong engineering culture through knowledge sharing and high standards for quality, delivery, and maintainability
Mentoring engineers in the team and contributing to our engineering hiring process

We don’t expect you to tick every box. If this role excites you, we’d still love to hear from you.