Staff Software Engineer- Java

Join to apply for the Staff Software Engineer- Java & AWS role at Commonwealth Bank.

You will be joining the Real Time Payments Execution Engine team, which is responsible for overseeing the suite of applications used for payment execution. The future roadmap includes building similar applications internally to better align with our strategic goals.

Sydney or Melbourne location

• Hands-on development and architecture of high-performance Spring Boot microservices in Java, capable of processing thousands of payment transactions per second with sub-second response times.
• Building fault-tolerant and self-healing payment systems using advanced Java concurrency patterns, reactive programming, and distributed system resilience techniques.
• Developing comprehensive automated testing suites including unit tests, integration tests, contract tests, and performance tests for payment microservices.
• Implementing event-driven payment architectures using Java-based message processing and streaming solutions for real-time transaction handling.
• Code reviewing, mentoring development teams, and establishing Java coding standards and best practices for payment system development.
• Designing, developing, and managing platform solutions that span on-prem and multi-cloud (AWS) environments.
• Leading CI/CD pipeline development and optimization.
• Automating operational tasks using scripting languages (e.g., Python, Bash).
• Integrating observability tools to enhance system visibility and reliability.
• Managing the full DevOps lifecycle, from build to release, with a focus on security, scalability, and performance.

• Proven experience in full cycle software development & delivery roles within cloud environments.
• Expert-level Java development skills (Java 11+) with extensive hands-on experience building enterprise-grade applications and deep understanding of JVM internals, garbage collection tuning, and performance optimization.
• Advanced Spring Boot and Spring ecosystem expertise for reactive programming, Spring Cloud for distributed systems, Spring Security for authentication/authorization, and Spring Data for database abstraction.
• Proven track record in designing and implementing microservices architectures from scratch, including service decomposition, API design, data consistency patterns, and inter-service communication strategies.
• Deep expertise in Java concurrency and multithreading, parallel streams, thread pools, lock-free programming, and reactive programming with Project Reactor.
• Advanced knowledge of design patterns and clean architecture principles with ability to write maintainable, testable, and scalable Java code.
• Hands-on experience with resilience libraries like Resilience4j, implementing circuit breakers, rate limiters, retry mechanisms, and bulkhead patterns in Java applications.
• Strong proficiency in Java testing frameworks including JUnit 5, Mockito, TestContainers, WireMock, and property-based testing for comprehensive test coverage.
• Proven experience leveraging AI-powered development tools to accelerate code generation and refactoring workflows.
• Strong hands-on expertise in AWS, CI/CD tooling, and scripting for automation.
• A deep understanding of observability practices and tools.
• Solid experience in end-to-end testing, including test automation and quality assurance practices.

Java, Advanced Spring Boot Microservices, AWS: EKS, Helm, CloudFormation, CI/CD

If this sounds like you, apply today. We support our people with the flexibility to balance where work is done with at least half your time each month connecting in office.

If you're already part of the Commonwealth Bank Group (including Bankwest, x15ventures), you'll need to apply through Sidekick to submit a valid application. We're keen to support you with the next step in your career.

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Advertising End Date: 23/09/2025