Staff Mobile Engineer, Spend Foundation

Airwallex6 days ago

Location

US - San Francisco

Type

Full Time

Salary

USD 180,000 – 300,000

Level

Staff

Role

Staff Mobile Engineer

Posted

Jun 23, 2026

Full TimeStaff

The role

Summary

Staff Mobile Engineer leading the Mobile Foundations platform team at Airwallex, responsible for designing and evolving shared mobile architecture, core platform capabilities, and developer experience across iOS and Android native applications. This role combines hands-on technical excellence with cross-team leadership, requiring deep expertise in modern iOS (Swift, SwiftUI, Combine) and Android (Kotlin, Jetpack, Coroutines) development, architectural design, CI/CD optimization, and the ability to influence product teams while maintaining high standards for security, performance, and reliability in a high-scale fintech environment.

What you'll do

Lead Mobile Platform Architecture Evolution: Define, design, and evolve the shared architecture across iOS and Android native applications, including navigation systems, state management patterns, networking layers, offline-first strategies, and comprehensive error handling frameworks. Drive critical decisions around modularization and establish clear architectural boundaries between foundation modules and product features to enable faster, more reliable feature delivery.

Own and Maintain Core Platform Libraries and Frameworks: Take full ownership of shared mobile libraries and frameworks including design system components, analytics infrastructure, feature flagging systems, experimentation platforms, authentication mechanisms, payments integration, and observability tools. Ensure these critical platform components remain stable, well-documented, and easy to adopt and extend across all product teams at scale.

Drive Mobile Security and Compliance: Champion mobile application security by implementing and enforcing anti-tampering measures, certificate pinning, secure authentication and authorization mechanisms, and mobile-specific security best practices. Establish security guidelines and ensure all platform components meet fintech-grade security standards required for Airwallex's payments and treasury products.

Establish Performance and Reliability Metrics: Define, implement, and continuously track platform-level performance and reliability metrics including crash-free session rates, ANR (Application Not Responding) occurrences, app startup time, bundle size, network performance, and memory efficiency. Partner with product teams to identify and drive initiatives that improve overall mobile application quality and user experience.

Implement End-to-End Observability: Design and implement comprehensive observability across the mobile platform encompassing structured logging, metrics collection, distributed tracing, and crash reporting integration. Use data-driven insights from observability systems to guide technical priorities and inform architectural decisions.

Optimize CI/CD Infrastructure and Developer Experience: Own and continuously improve mobile CI/CD pipelines using GitHub Actions, Bitrise, or similar platforms, focusing on reducing build times, eliminating test flakiness, and streamlining release workflows. Enhance overall developer experience through tooling improvements, code generation templates, comprehensive documentation, and build automation that allows mobile engineers to ship features with confidence.

Manage Mobile Release Process and On-Call Rotation: Own the end-to-end mobile release process across iOS and Android, ensuring timely, reliable delivery of new app versions to the App Store and Google Play. Establish clear incident response guidelines, lead the on-call rotation for critical platform-level incidents, ensure rapid response and resolution, and drive post-incident learning.

Define Mobile Engineering Best Practices: Establish, document, and enforce mobile engineering best practices across the organization to maintain a high bar for code quality, maintainability, security, and consistency. Create coding standards, architectural patterns, and technical guidelines that scale across the mobile engineering organization.

Drive Cross-Team Technical Initiatives: Lead high-impact cross-squad projects from problem definition through execution and adoption, such as design system rollouts, major architectural migrations, or cross-platform feature foundations. Align diverse stakeholders including engineering managers, product managers, designers, and backend/platform teams around technical direction while making pragmatic trade-offs.

Provide Technical Mentorship and Leadership: Lead by example with clean, testable, well-structured code while setting standards across both iOS and Android platforms. Provide technical mentorship and guidance to senior and mid-level engineers through design reviews, pair programming sessions, and coaching. Contribute to hiring, onboarding, and the growth of the mobile engineering community at Airwallex.

What we look for

Technical

Native iOS DevelopmentAdvanced proficiency in Swift with demonstrated expertise in SwiftUI, Combine framework, and Swift's async/await concurrency model for building performant, maintainable iOS applications

Native Android DevelopmentAdvanced proficiency in Kotlin with hands-on experience in AndroidX, Jetpack components, Coroutines, and Hilt dependency injection for enterprise-grade Android applications

Mobile Architecture DesignProven expertise in designing scalable mobile architectures including navigation systems, state management patterns, networking layers, offline-first strategies, and comprehensive error handling

CI/CD Pipeline EngineeringExperience owning and optimizing mobile CI/CD pipelines using GitHub Actions or Bitrise, with focus on reducing build times, test flakiness, and streamlining release workflows

Mobile Security ImplementationDeep understanding of mobile security practices including certificate pinning, anti-tampering measures, secure authentication mechanisms, and authorization frameworks

Performance OptimizationExpertise in mobile application performance monitoring and optimization including app startup time, memory management, battery efficiency, bundle size reduction, and network performance

Code Quality and TestingAdvanced ability to design for testability and maintainability with proficiency in writing high-quality automated tests, understanding test coverage strategies, and establishing code quality standards

Observability and MonitoringExperience implementing comprehensive observability across mobile platforms including logging, metrics collection, distributed tracing, and crash reporting integration

Shared Library DevelopmentTrack record of building, maintaining, and evolving shared libraries and frameworks consumed by multiple product teams at scale

Education

Bachelor's DegreeBachelor's degree in Computer Science, Engineering, or related field, or equivalent practical experience demonstrating comparable technical expertise

Experience

Senior/Staff Level Mobile EngineeringMinimum 8-10+ years of professional experience building native mobile applications, with at least 3+ years operating at Senior or Staff level with demonstrated technical leadership

Cross-Team Technical LeadershipProven track record leading cross-team technical initiatives, evolving mobile architectures, and influencing engineers and product teams without direct authority

Mobile Foundations ExperienceExperience with platform or horizontal team structures, modularization efforts, design system evolution, or foundational platform work

Influence and Stakeholder AlignmentDemonstrated ability to align diverse stakeholders (engineers, product managers, designers, backend teams) around technical direction and make pragmatic trade-offs

Skills

Required skills

Swift and Modern iOS PatternsExpert-level proficiency in Swift, SwiftUI, and Swift concurrency patterns with production experience shipping high-quality iOS applications

Kotlin and Android EcosystemExpert-level proficiency in Kotlin with hands-on knowledge of Jetpack, AndroidX, Coroutines, and Hilt for enterprise mobile development

Mobile Architecture and System DesignAbility to design scalable, maintainable architectures addressing navigation, state management, networking, offline capabilities, and error handling

Automated Testing and Quality AssuranceProficiency in unit testing, integration testing, UI testing, and strategic test coverage implementation for mobile applications

Cross-Platform Mobile DevelopmentWorking knowledge of both iOS and Android platforms with ability to maintain consistency and establish platform-agnostic best practices

Developer Communication and DocumentationAbility to communicate complex technical concepts clearly through documentation, design reviews, and mentorship to support developer adoption of platform libraries

Technical Leadership and MentoringExperience leading technical direction, mentoring senior engineers, and building engineering culture through code reviews and best practice establishment

Nice to have

Mobile Platform Roadmap PlanningExperience defining and driving mobile platform roadmaps that balance foundational infrastructure work with product delivery constraints

Design Systems and Component LibrariesHands-on experience building, evolving, and scaling design systems or reusable component libraries across mobile platforms

Analytics and Experimentation FrameworksExperience implementing analytics pipelines, feature flagging systems, and A/B testing infrastructure on mobile platforms

Payments and Fintech Domain KnowledgeBackground in payments, financial services, or B2B SaaS environments where security, reliability, and regulatory compliance are paramount

Mobile Security SpecializationDeep expertise in mobile security practices, anti-tampering techniques, biometric authentication, and secure data handling

Open Source ContributionsActive involvement in mobile open source projects, public speaking on mobile architecture topics, or published thought leadership

Hiring and Team BuildingExperience participating in hiring processes, onboarding senior engineers, and growing mobile engineering teams

Compensation & benefits

Salary

USD 180,000 – 300,000 (annual)

Stock options

Available

Benefits

Equity Compensation

Stock options offering meaningful ownership and upside aligned with company success in a high-growth fintech organization backed by leading investors

Competitive Health and Wellness

Comprehensive health insurance coverage including medical, dental, and vision benefits with employer contributions

Flexible Work Arrangements

Work-from-home flexibility with office locations in Singapore, Melbourne, and San Francisco, enabling distributed team collaboration

Professional Development and Learning

Investment in continuous learning through technical conferences, training programs, and opportunities to lead technical workshops and knowledge-sharing sessions

Career Growth and Technical Leadership

Clear path to advancing technical leadership and mentoring responsibilities with opportunities to shape the future of mobile engineering at a scale impacting 200,000+ businesses

Impactful Work on Global Platform

Opportunity to build core infrastructure powering a unified payments and financial platform used by major companies including Brex, Rippling, Navan, Qantas, and SHEIN

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