Senior iOS Engineer, GTPN Platform

iOS Engineer · Senior · Full Time

SG - SingaporeSGD 160k – 240k7mo ago
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Role

What you'll do.

A Senior iOS Engineer role at Airwallex focused on building mobile applications for the GTPN platform, enabling global payment solutions. The position requires 5+ years of iOS development experience with Swift and Objective-C, working on enterprise-scale financial applications with strong emphasis on security, regulatory compliance, and cross-platform understanding.

Responsibilities

  • Enterprise Application Development: Design and implement enterprise-grade iOS applications and libraries for the GTPN platform
  • Cross-functional Collaboration: Work with internal business teams and product management to define technical requirements and specifications
  • Full-cycle Product Development: Serve as core contributor owning complete product development lifecycle from conception to deployment
  • Code Architecture and Refactoring: Collaborate with architects to refactor code and design for optimal maintainability, extensibility, and reusability
  • Security and Compliance Implementation: Integrate best practices for protecting sensitive customer data and ensuring global regulatory compliance
  • Platform Optimization: Ensure applications are secure, reliable, sustainable, and developer-friendly across the iOS ecosystem
  • Feature Development: Deliver new features and different levels of integration experiences for global payment products

Qualifications

What we look for.

Technical

  • iOS Development Expertise

    5+ years of professional experience developing native iOS applications using Swift and Objective-C

  • iOS Frameworks Mastery

    Expert knowledge of iOS frameworks, ecosystem, and development best practices

  • Mobile Design Patterns

    Strong understanding of design patterns specific to mobile development and architecture

  • RESTful API Integration

    Proven experience integrating with RESTful APIs and backend services

  • Code Quality and Testing

    Ability to write robust, maintainable code with high test coverage and maintain CI/CD pipelines

  • Cross-platform Knowledge

    Android development expertise is highly regarded for cross-platform understanding

Education

  • Computer Science Degree

    BS/MS degree in Computer Science or equivalent technical major

Experience

  • Professional iOS Development

    Minimum 5 years of professional experience in native iOS app development

  • Enterprise Application Development

    Experience building large-scale, enterprise-grade mobile applications

  • Financial Technology Experience

    Preferred experience in fintech, payments, or financial services applications

  • Team Collaboration

    Proven ability to work independently and collaboratively in cross-functional teams

Skills

Required

  • Swift Programming

    Advanced proficiency in Swift for iOS development with modern best practices

  • Objective-C

    Strong knowledge of Objective-C for legacy code maintenance and interoperability

  • iOS SDK and Frameworks

    Expert-level knowledge of iOS SDK, UIKit, Foundation, and core iOS frameworks

  • RESTful API Integration

    Experience designing and implementing RESTful API integrations

  • Mobile Architecture Patterns

    Understanding of MVVM, MVC, VIPER, and other mobile architecture patterns

  • CI/CD Pipeline Management

    Experience with continuous integration and deployment automation

  • Unit and Integration Testing

    Proficiency in writing comprehensive test suites for mobile applications

  • Security Best Practices

    Knowledge of mobile security, data protection, and regulatory compliance

  • English Communication

    Fluent English communication for global team collaboration

Preferred

  • Android Development

    Nice to have

    Cross-platform mobile development experience with Android ecosystem

  • Financial Technology

    Nice to have

    Background in fintech, payments, or banking application development

  • Performance Optimization

    Nice to have

    Experience optimizing mobile app performance and user experience

  • App Store Deployment

    Nice to have

    Knowledge of App Store submission process and guidelines

  • Agile Methodologies

    Nice to have

    Experience working in Agile/Scrum development environments

Tech stack

Languages

SwiftObjective-C

Frameworks

iOS SDKUIKitFoundation

Tools

XcodeCI/CD PipelinesGitRESTful APIs

Other

Mobile Testing FrameworksSecurity LibrariesPayment SDKs

Compensation

Pay and benefits.

Base·SGD 160,000 – 240,000

Benefits

  • Innovation Impact

    Opportunity to redefine the technological landscape of the financial world with cutting-edge solutions

  • Diverse Workplace

    Rich, inclusive workspace with strength in diversity and collaborative spirit

  • Cutting-edge Technology

    Work with groundbreaking technologies that ensure continuous learning and engagement

  • Professional Growth

    Vibrant community with guild meetings and shared initiatives fostering knowledge sharing

  • Career Empowerment

    Supportive environment where contributions drive change and growth knows no bounds

  • Global Team

    Work with over 2,000 innovative professionals across 26 offices worldwide

Process

Interview steps.

  1. 01

    Initial Screening

    Phone or video call to discuss background, experience, and interest in the role

  2. 02

    Technical Assessment

    Coding challenge or technical questions focused on iOS development, Swift, and mobile architecture

  3. 03

    System Design Interview

    Discussion of mobile app architecture, scalability, and design decisions for financial applications

  4. 04

    Team Interview

    Meeting with engineering team members and potential colleagues to assess cultural fit

  5. 05

    Final Interview

    Meeting with senior leadership to discuss career goals, company fit, and role expectations

Full posting

Original listing.

About Airwallex

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 200,000 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 2,000 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.

Attributes We Value

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.

Who We Are Looking For:

As an experienced Senior Mobile Engineer (iOS), you’ll be part of our GTPN team to build the Airwallex Mobile App for our customers to access our payment products across the globe on the go.

You will work with your engineering colleagues as well as product stakeholders to not only make sure it’s secure, reliable, sustainable and developer-friendly but also bring new features and different levels of integration experience. We build our solutions in native technologies across iOS and Android, so we admire that you have a grasp of both platforms.

In addition to core engineering duties, we actively encourage our engineering community to contribute to the growth of Airwallex generally. Our business is achieving rapid growth with an evolving roadmap, and we want our engineers to play a part in how that happens.

Responsibilities:

  • Responsible for the design & implementation of enterprise applications and libraries for iOS;

  • Work with internal business teams and product management to define requirements and develop technical specifications;

  • Serve as core contributor owning full-cycle product development;

  • Work with Architect and re-factor code and design for optimal maintainability, extensibility and reusability.

  • Integrate best practices for protecting sensitive customer data and ensuring global regulatory compliance.

Qualifications:

  • BS / MS degree in Computer Science or equivalent majors;

  • 5+ years of professional experience developing native apps in iOS (both Swift and Objective-C);

  • Expert knowledge of iOS frameworks and ecosystem;

  • Good understanding of design patterns for mobile development;

  • Experience using RESTful APIs;

  • Promote robust and maintainable code with high test coverage, and can maintain automation pipelines for CI/CD;

  • Ability to work independently as well as with a team;

  • Fluently in English.

  • While this position primarily focuses on iOS development, your expertise in Android is also highly regarded.

Why Join Us

  • Impact and Innovation: Join a team where innovation meets impact. With us, you will redefine the technological landscape of the financial world.

  • Diversity and Collaboration: Our strength lies in our diversity and collaborative spirit, ensuring a rich, inclusive workspace.

  • Cutting-edge Technology: You will work with groundbreaking technologies that keep you engaged and continuously learning.

  • Community and Growth: Engage in a vibrant community with guild meetings and shared initiatives that foster knowledge sharing and professional growth.

  • Empowerment: Be part of a team where your contributions spearhead change and your growth knows no bounds in a supportive environment.

Applicant Safety Policy: Fraud and Third-Party Recruiters

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.

Equal opportunity

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.

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