Staff Mobile Engineer Spend Foundation

Airwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software we empower over 200000 businesses worldwide – including Brex Rippling Navan Qantas SHEIN and many more – with fully integrated solutions to manage everything from business accounts payments spend management and treasury to embedded finance at a global scale.

Proudly founded in Melbourne we have a team of over 2200 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 billion and backed by world-leading investors including T. Rowe Price Visa Mastercard Robinhood Ventures Sequoia Salesforce Ventures DST Global and Lone Pine Capital Airwallex is leading the charge in building the global payments and financial platform of the future. If you’re ready to do the most ambitious work of your career join us.

We hire successful builders with founder-like energy who want real impact accelerated learning and true ownership. You bring strong role-related expertise and sharp thinking and you’re motivated by our mission and operating principles. You move fast with good judgment dig deep with curiosity and make decisions from first principles balancing speed and rigor.

You're humble and collaborative; turn zero‑to‑one ideas into real products and you “get stuff done” end-to-end. You use AI to work smarter and solve problems faster. Here you’ll tackle complex high‑visibility problems with exceptional teammates and grow your career as we build the future of global banking. If that sounds like you let’s build what’s next.

The Mobile Foundations team sits at the core of Airwallex’s mobile stack. We build and evolve the shared architecture libraries and tooling that power our fully native iOS and Android apps.

Our apps help businesses manage global B2B payments submit and approve expenses and control both virtual and physical Airwallex cards—complete with seamless Apple Pay and Google Pay integration. On iOS we work with Swift SwiftUI Combine and async/await. On Android we use Kotlin AndroidX Coroutines Hilt and the Jetpack ecosystem.

Mobile Foundations is a platform / horizontal team: we don’t just build features we create the building blocks that enable product squads to ship faster more reliably and with a consistent high-quality user experience.

This role can be based in Singapore Melbourne or San Francisco.

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.

You will:

• Define and evolve mobile architecture

  • Lead the design and evolution of the shared architecture for our native mobile apps including navigation state management networking offline strategies and error handling.

  • Drive modularisation and clear boundaries between foundation modules and product features.

• Own core mobile platform capabilities

  • Own and maintain shared libraries and frameworks (e.g. design system components analytics feature flags experimentation authentication payments observability).

  • Be responsible for the application's authentication and authorization mechanisms.

  • Ensure these components are stable well-documented and easy to adopt and extend by product teams.

• Improve security reliability performance and observability

  • Drive mobile application security including anti-tampering measures certificate pinning and security best practices.

  • Define and track platform-level metrics such as crash-free sessions ANRs app start-up time bundle size and network performance.

  • Partner with product teams to drive initiatives that improve reliability performance and overall mobile quality.

  • Strengthen end-to-end observability across mobile (logging metrics tracing crash reporting) and use data to guide priorities.

• Elevate developer experience CI/CD

  • Own and continuously improve our mobile CI/CD pipelines (e.g. GitHub Actions Bitrise) reducing build times flakiness and friction in releasing features.

  • Improve developer experience for mobile engineers through tooling templates documentation and automation.

• Manage Mobile Release Operational Health and Best Practices

  • Own the end-to-end mobile release process across iOS and Android ensuring timely and reliable delivery of new versions.

  • Establish clear guidelines and lead the on-call rotation for critical platform-level incidents ensuring rapid response and resolution.

  • Define document and enforce mobile engineering best practices across the organization to maintain a high bar for code quality and platform consistency.

• Lead cross-team technical initiatives

  • Drive cross-squad projects (e.g. rollout of a new design system major architectural changes cross-platform feature foundations) from problem definition through to rollout and adoption.

  • Align stakeholders (EMs PMs designers backend/platform teams) around technical direction and trade-offs.

• Be a hands-on technical leader and mentor

  • Lead by example with clean testable well-structured code on either iOS or Android while setting standards across both platforms.

  • Provide technical mentorship and guidance to senior and mid-level engineers through design reviews pairing and coaching.

  • Contribute to and influence hiring onboarding and the growth of the mobile engineering community at Airwallex.

We’re looking for people who meet the minimum qualifications below. The preferred qualifications are a strong plus but not strictly required.

• 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.

• 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.

  • Analytics experimentation and feature flagging on mobile.

  • 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.

If you’re excited about shaping the foundations of high-quality native mobile apps used by businesses around the world—and multiplying the impact of every mobile engineer at Airwallex—we’d love to hear from you.

To protect you from recruitment scams please be aware that Airwallex will not ask for bank details sensitive ID numbers (i.e. passport) or any form of payment during the application or interview process. All official communication will come from an @airwallex.com email address. Please apply only through careers.airwallex.com or our official LinkedIn page.

Airwallex does not accept unsolicited resumes from search firms/recruiters. Airwallex will not pay any fees to search firms/recruiters if a candidate is submitted by a search firm/recruiter unless an agreement has been entered into with respect to specific open position(s). Search firms/recruiters submitting resumes to Airwallex on an unsolicited basis shall be deemed to accept this condition regardless of any other provision to the contrary.

Airwallex is proud to be an equal opportunity employer. We value diversity and anyone seeking employment at Airwallex is considered based on merit qualifications competence and talent. We don’t regard color religion race national origin sexual orientation ancestry citizenship sex marital or family status disability gender or any other legally protected status when making our hiring decisions. If you have a disability or special need that requires accommodation please let us know.

What We Do

Airwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software we empower over 200000+ businesses worldwide – including Brex Rippling Navan Qantas SHEIN and many more – with fully integrated solutions to manage everything from business accounts payments spend management and treasury to embedded finance at a global scale.Proudly founded in Melbourne we have a team of over 2200 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 billion and backed by world-leading investors including T. Rowe Price Visa Mastercard Robinhood Ventures Sequoia Salesforce Ventures DST Global and Lone Pine Capital Airwallex is leading the charge in building the global payments and financial platform of the future. If you’re ready to do the most ambitious work of your career join us.

Why Work With Us

Airwallex was founded by people told their idea was unreasonable and we've hired that way ever since. We move fast think globally and give you ownership from day one. If you want to pioneer global finance at scale alongside the ambitious let's talk.

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