Staff Mobile Engineer, Spend Foundation

Airwallex (UK) Limited

Job Overview

Location

US - San Francisco

Job Type

Full-time

Full Job Description

📋 Description

• As a Staff Mobile Engineer on the Mobile Foundations team, you will lead the technical direction of Airwallex’s mobile platform across iOS and Android, shaping the shared architecture and core components that enable product teams to build reliable, high-quality native apps used by global businesses.
• You will define and evolve mobile architecture, own critical shared libraries and frameworks, improve security and performance, elevate developer experience through CI/CD improvements, manage release processes, and drive cross-team technical initiatives while mentoring senior engineers.
• The Mobile Foundations team builds the shared architecture, libraries, and tooling that power Airwallex’s fully native iOS and Android apps, enabling businesses to manage global B2B payments, expenses, and cards with seamless Apple Pay and Google Pay integration.
• You will grow your impact as a technical leader by influencing mobile engineering practices across the organization, contributing to hiring and onboarding, and shaping the future of mobile foundations at a fintech company valued at US$8 billion with over 2,200 employees across 26 global offices.

🎯 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 either 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)
• Strong focus on code quality and reliability, including designing for testability, writing high-quality automated tests, and using coverage meaningfully
• Experience owning and improving mobile CI/CD pipelines (e.g. GitHub Actions, Bitrise), including build optimisation, test stability, and release workflows
• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent practical experience

🏖️ Benefits

• Opportunity to shape the foundations of high-quality native mobile apps used by businesses around the world
• Multiply the impact of every mobile engineer at Airwallex through technical leadership and mentorship
• Work with exceptional teammates on complex, high-visibility problems in a global fintech leader backed by investors like Visa, Mastercard, and Sequoia
• Access to a culture of founder-like energy, accelerated learning, true ownership, and first-principles decision making
• Ability to work from Singapore, Melbourne, or San Francisco with a distributed global team of over 2,200 people across 26 offices

Skills & Technologies

Swift

Kotlin

GitHub

iOS

Android

Mobile

Senior

Onsite

Degree Required

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Airwallex (UK) Limited

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About Airwallex (UK) Limited

Airwallex is a global financial technology company providing cross-border payment and banking infrastructure for businesses. It offers multi-currency accounts, foreign exchange, card issuing, expense management, and embedded finance APIs. Founded in Melbourne in 2015, the company serves enterprises and SMEs across Asia-Pacific, Europe, and the Americas, operating under licenses in multiple jurisdictions and processing billions in annualized transaction volume.

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