Staff Mobile Engineer, Spend Foundation

As a Staff Mobile Engineer on the Mobile Foundations team, you will lead the technical direction of our mobile platform across iOS and Android. You will design and evolve the core architecture, own critical shared components, and act as a multiplier for mobile engineers across product teams.

Responsibilities

Define and evolve mobile architecture; Own core mobile platform capabilities; Improve security, reliability, performance, and observability; Elevate developer experience, CI/CD; Manage Mobile Release, Operational Health, and Best Practices; Lead cross-team technical initiatives; Be a hands-on technical leader and mentor

Requirements

8–10+ years of experience building native mobile applications on iOS or Android, including at least 3+ years operating at a Senior or Staff level; Deep expertise in iOS: Swift, SwiftUI, Combine, async/await, or Android: Kotlin, AndroidX, Jetpack, Coroutines, Hilt with commercial knowledge of both platforms; Proven track record leading cross-team technical initiatives and evolving mobile architectures (e.g. modularisation, design systems, networking, offline support, or similar); Strong focus on code quality and reliability: designs for testability and maintainability, writes high-quality automated tests and uses coverage meaningfully (not just as a number); Experience owning and improving mobile CI/CD pipelines (e.g. GitHub Actions, Bitrise), including build optimisation, test stability, and release workflows; Demonstrated ability to influence without authority: aligns engineers, PMs, and designers around technical direction and makes pragmatic trade-offs; Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience

Nice to have

Experience defining and driving a mobile platform roadmap, balancing foundational work with product delivery needs; Prior ownership of shared mobile libraries or frameworks used by multiple product teams at scale; Hands-on experience with design systems and component libraries on mobile; Hands-on experience with analytics, experimentation, and feature flagging on mobile; Hands-on experience with observability tooling (e.g. Crashlytics, Sentry, logging/metrics platforms); Experience in domains such as payments, fintech, or B2B SaaS, especially where reliability, security, and regulatory requirements are critical; Experience mentoring other senior engineers and playing a key role in hiring and growing mobile teams; Contributions to the mobile community (open source, talks, blog posts) or evidence of thought leadership in mobile architecture and foundations