Software Engineer (Java/.NET, API, AWS)

You are a detail-focused engineer who loves building elegant end-to-end solutions. We are a team of big thinkers, defining the future of digital banking. Together we can deliver large-scale applications that impact millions of users.

Do work that matters

With a background in end-to-end application management experience, you are passionate about building critical payments applications as part of a pipeline that impacts millions of customers. As someone who is detail focused and loves solving challenges, you will design, code, test and deploy complex enterprise level Microservices-based applications.

Day to day you will collaborate across teams and functions, working with Product Owners, Software Engineers and DevOps Specialists who are collectively driven to provide industry-leading solutions for the bank and its customers. Communicating complex ideas and solutions with technical leaders and business stakeholders is second nature to you.

Sharing knowledge is part of how you work and you’re well equipped to provide technical engineering advice and recommendations. You’re constantly learning, honing your craft inside and outside of work as a passionate member of the broader engineering community.

See yourself in our team

Technology group in CBA is responsible for the world leading application of technology and operations across every aspect of CommBank, from innovative product platforms for our customers to essential tools within our business. We also use technology to drive efficient and timely processing, an essential component of great customer service.

Financial Crimes sits at the heart of CBA’s Financial Crime Technology division, playing a critical role in protecting our customers and the community from emerging threats.

This is where complex engineering challenges meet meaningful purpose by building the platforms and intelligence that detect, prevent and respond to financial crime at scale. Our engineers work on high-impact systems that safeguard millions of Australians, shaping the future of financial crime prevention through cutting-edge cloud technology, data-driven insights, advanced automation and AI-enabled detection.

In this mission-led environment, you’ll innovate boldly, solve real problems and collaborate to deliver technology that stays ahead of emerging threats and keeps our customers safe.

Key Responsibilities

• Development of Microservices (RESTful APIs, Reactive and Batch) based applications.
• Design, develop, and deploy cloud-native application logic using AWS Lambda (e.g., Python/Node.js), EC2, building event-driven services integrated with API Gateway, DynamoDB, S3, messaging sercie
• Work with other team members to ensure the development process is completed on time, and to the engineering standards.
• Develop scalable frameworks that will be used by multiple teams.
• Check in and deploy code and configurations; participate in release management.
• Taking ownership of the features/components - from development through deployment and verification, to setting up in production.
• Being a full cycle engineer, manage the end to delivery cycle including requirement gathering, documentation, design, build, test, and release.
• Participate in key initiatives from the Technology team on innovative ways to improve capability, standards and risk profile of the platform.
• Monitor emerging technologies, industry developments, directions, and best practices.
• Co‑operate with other departments and stakeholders as required to perform assigned duties or reasonably assist other staff in performing their duties.
• Contribute to triage of production and test environment issues.
• At all times act in a courteous and professional manner and use best judgement to advance the interests of the company, its customers and staff.

We’re interested in hearing from people who have

• Risk Mindset –All CommBank employees are expected to proactively identify and understand, openly discuss and act on current and future risks.
• Have worked as a full cycle engineers who can gather requirement, design, develop, test, release and do production support.

Tech Skills

• Experience in .NET or Java/J2EE, Spring suite, and REST APIs.
• Experience with AWS services to be able to build and deploy cloud native application logic using AWS Lambda (e.g., Python/Node.js), AWS glue (ETL jobs), MWAA (Managed Workflows for Apache Airflow) or AWS Step Functions , Apache Iceberg tables, Amazon Redhshift building event-driven services integrated with API Gateway, DynamoDB, S3, and messaging services.
• Microservice Architecture, Design Patterns and best practices.
• Good understanding of relational databases, SQL queries and tuning of the same. Involved in data model design of an enterprise application will be an advantage.
• Experienced in Performance Tuning, High throughput and resilient applications.
• Experience working with Snowflake for data storage, querying, and integration with application services is desirable
• Maven and CI Tools (Teamcity, Githubactions).
• Agile methodologies and working on short sprint cycles.
• Being an individual with proactive & go-getter attitude who works well in a team.
• Experience with Docker, Kubernetes and AWS is highly desirable
• Experience with automation frameworks for unit & functional validation.
• Banking domain knowledge is desirable

Working with us

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

Our people bring their diverse backgrounds and unique perspectives to build a respectful, inclusive, and flexible workplace with flexible work locations. One where we’re driven by our values, and supported to share ideas, initiatives, and energy. One where making a positive impact for customers, communities and each other is part of our every day.

Here, you’ll thrive. You’ll be supported when faced with challenges and empowered to tackle new opportunities. We’re hiring engineers from across all of Australia and have opened technology hubs in Melbourne and Perth. We really love working here, and we think you will too.

We support our people with the flexibility to balance where work is done with at least half their time each month connecting in office. We also have many other flexible working options available including changing start and finish times, part-time arrangements and job share to name a few. Talk to us about how these arrangements might work in the role you’re interested in.

Advertising End Date: 20/06/2026