Senior Software Engineer

Commonwealth Bank; Sydney; On-site; AUD 150,000 - 190,000; Full time

Job summary

Commonwealth Bank is seeking a Senior iOS Software Engineer in Sydney to design and deliver high-quality iOS apps using Swift and SwiftUI. You will shape mobile architecture, drive engineering standards, and guide the technical roadmap alongside product owners and tech leaders.

You will mentor engineers, balance UX with security and reliability, and ensure testable, observable software delivered through CI/CD and cloud integrations.

Qualifications

• Deep native iOS development with Swift and SwiftUI.
• Strong mobile architecture knowledge (MVVM, MVI, Clean Architecture).
• Experience with dependency injection and SOLID principles.
• Delivery of secure, reliable mobile apps with automated tests and CD.
• Experience integrating REST or GraphQL APIs and AWS.
• Ability to lead technical decisions and influence direction.
• Experience mentoring engineers across teams.
• Exposure to backend development (.NET/C#, microservices) is a plus.

Responsibilities

• Design and deliver high-quality native iOS solutions with Swift/SwiftUI.
• Shape mobile architecture, engineering standards, and roadmap.
• Make design decisions balancing UX, security, reliability, maintainability.
• Collaborate with product owners and technical leaders to translate needs.
• Build well-tested, observable, maintainable software with automated tests and CD.
• Integrate mobile apps with APIs, backend services and cloud tech.
• Contribute across full engineering lifecycle from design to production.
• Mentor engineers and promote strong engineering practices.

Skills

Swift

SwiftUI

iOS development

Mobile architecture

MVVM/MVI/Clean

SOLID principles

Automated testing

CI/CD

REST/GraphQL

AWS

Mentoring engineers

Backend exposure

Tools

AWS

Job description

• Shape secure, reliable and intuitive mobile experiences within the CommBank app.
• Influence architecture and engineering practices while mentoring talented engineers.
• Build with Swift, SwiftUI, modern mobile architecture, cloud services and continuous delivery.

• Shape secure, reliable and intuitive mobile experiences within the CommBank app.
• Influence architecture and engineering practices while mentoring talented engineers.
• Build with Swift, SwiftUI, modern mobile architecture, cloud services and continuous delivery.

Do work that matters

Retail Technology delivers technology and operations across every aspect of CommBank and Bankwest Retail, from customer product platforms to essential tools that support the business. We use technology to drive efficient, timely processing and contribute directly to the Group purpose of building a brighter future for all, while helping bring the power of digital banking to every customer through one of Australia’s most critical technology ecosystems.

As a Senior Software Engineer, you’ll collaborate closely with product owners and fellow technical leaders to document changes and steer strategic initiatives. Your expertise will be key in making critical design and architectural decisions, mentoring engineers to produce well‑tested, maintainable code, and enhancing solution quality through industry best practices.

See yourself in our team

You’ll join a Sydney-based engineering squad, focused on driving continuous improvement in mobile engineering practices, while shaping the platform architecture and roadmap for both mobile and backend systems.

Working in a collaborative, product-aligned environment, you’ll take ownership across the full engineering lifecycle and help the team deliver high-quality customer outcomes.

In this role, you will:

• Design and deliver high-quality native iOS solutions using Swift and SwiftUI.
• Help shape mobile architecture, engineering standards and the technical roadmap.
• Make considered design and architectural decisions that balance customer experience, security, reliability and maintainability.
• Collaborate with product owners, engineers and technical leaders to translate customer needs into practical solutions.
• Build well-tested, observable and maintainable software using automated testing and continuous delivery practices.
• Integrate mobile applications with APIs, backend services and cloud-based technology.
• Contribute across the full engineering lifecycle, from design and development through to production operation.
• Mentor engineers, strengthen team capability and promote effective engineering practices.

We’re interested in hearing from people who:

You’re an experienced iOS engineer who combines strong hands‑on development capability with sound technical judgement. You communicate clearly, collaborate effectively and are comfortable influencing engineering decisions while supporting the growth of other engineers.

Experience in several of the following will set you up for success:

• Deep native iOS development experience using Swift and SwiftUI.
• Strong knowledge of mobile architecture, including MVVM, MVI, Clean Architecture and modular design.
• Experience with dependency injection, object-oriented design, SOLID principles and established software design patterns.
• Delivery of secure and reliable mobile applications supported by automated testing, continuous delivery and production observability.
• Experience integrating REST or GraphQL APIs and working with cloud services such as AWS.
• Ability to lead technical decisions, constructively challenge existing approaches and build support for strategic engineering direction.
• Experience mentoring engineers and improving capability, quality and engineering practices across teams.
• Exposure to backend development, including .NET, C# or microservices, regulated technology environments, AI or machine learning would be valuable.

Working with us

At CommBank, we're committed to creating an accessible, inclusive and respectful workplace. If you require support or adjustments, please let us know. We welcome applications from people of all backgrounds and we're particularly committed to making a positive difference for Aboriginal and/or Torres Strait Islander Peoples. For support please contact 1800 989 696.