Senior Software Engineer

Senior Software Engineer – Security Engineering & Automation

• Build scalable software solutions that help protect one of Australia's largest technology environments
• Develop APIs, automation and cloud-native services solving complex security challenges
• Work with modern engineering practices and emerging technologies across Group Security

As a Senior Software Engineer, you'll help design, build and support solutions that address real security challenges across the bank. You'll work closely with engineers, product owners and security specialists to deliver high-quality software, drive continuous improvement and help solve problems at scale.

This is an opportunity to work on meaningful engineering challenges while contributing to the security and resilience of one of Australia's largest technology environments.

See yourself in our team

Group Security is part of Technology and brings together security and resilience capabilities spanning cyber security, protective security, business resilience, fraud technology and operations, and cyber defence. The team exists to secure the bank, protect customers and build resilient solutions that help safeguard a brighter future for all.

You'll join a growing engineering capability focused on solving recurring and emerging security challenges through automation, APIs and modern engineering practices.

The team supports a range of security engineering initiatives across the group, building solutions that improve operational efficiency, strengthen security outcomes and help address complex problems in scalable and repeatable ways.

Working alongside software engineers, architects, product owners and security specialists, you'll contribute to the development of modern engineering solutions while continuously expanding your technical knowledge and capability.

Do work that matters:

Software Engineering & Delivery

• Design, build and support scalable APIs, automation services and software solutions

• Develop solutions that address complex security and operational challenges across the organisation

• Contribute to the full software development lifecycle, from design and development through to testing, deployment and production support

• Deliver high-quality, maintainable code using modern engineering practices

Engineering Excellence

• Champion engineering best practices across testing, CI/CD, observability and operational support

• Contribute to improving reliability, performance and maintainability across engineering solutions

• Participate in code reviews and support continuous improvement initiatives

• Help identify and resolve recurring technical issues

Collaboration & Problem Solving

• Work closely with engineers, product owners and security teams to deliver impactful solutions

• Investigate complex technical challenges and contribute innovative approaches to solving them

• Support engineering discussions around architecture, design and delivery decisions

• Collaborate across squads to share knowledge and improve outcomes

Continuous Learning & Innovation

• Stay current with emerging technologies, engineering trends and modern development practices

• Explore opportunities to apply automation and AI-driven tools to improve engineering outcomes

• Contribute ideas that improve processes, tooling and operational efficiency

• Demonstrate adaptability and a willingness to learn new technologies when required.

We're interested in hearing from people who have

• Strong full-stack software engineering experience with deep backend engineering expertise

• Experience building and supporting software across the full development lifecycle, from design and development through to testing, deployment and production support

• Experience designing and building APIs, automation solutions or distributed systems

• Solid programming experience in Python or similar modern programming languages

• Experience working in cloud environments such as AWS or Azure

• Strong understanding of modern software engineering practices including CI/CD, testing and deployment automation

• Experience working in Agile teams and contributing to end-to-end delivery

• Strong problem-solving capability and a passion for continuous improvement

• Learning agility and curiosity, with the ability to quickly adapt to new technologies and unfamiliar challenges

Experience in cyber security, security engineering, incident response or related environments will be highly regarded but is not essential.

Technical Skills

Software Engineering

• Strong software engineering experience across frontend and backend systems

• Python development and backend engineering

• API design, development and integration

• Object-oriented programming and modern software design principles

• Full software development lifecycle ownership

Cloud & Platform Engineering

• AWS and/or Azure

• CI/CD pipelines and deployment automation

• Infrastructure as Code

• Cloud-native services and distributed systems

Engineering Practices

• Automated testing and quality engineering

• Monitoring, observability and operational support

• Secure software development practices

• System design and architecture

What we value

• Strong engineering fundamentals and technical curiosity

• Ownership and accountability for outcomes

• A collaborative mindset and willingness to support others

• Continuous learning and adaptability

• Innovation and problem-solving

• Building reliable, scalable and maintainable solutions

Working with us

Whether you're passionate about customer service, driven by data, or called by creativity, a career at CommBank is for you.

We support our people with the flexibility to thrive both at work and at home, fostering a culture where diversity, inclusion and wellbeing are prioritised. Together, we're committed to building a workplace where everyone can achieve their potential.

Apply today!