Commonwealth Bank of Australia

Principal Software Engineer

• Multiple Roles**
• Sydney or Melbourne location**
• You are a Principal Engineer who’s passionate about innovating and building leading solutions to exceed customer expectations.
• We are solving the biggest puzzles in the Australian financial services industry.
• Enjoy employee banking benefits and over 600 staff deal!

Do work that matters

We are creating the bank of tomorrow today and require top Engineers who focus on the customer experience and deliver exceptional solutions. Our Payments team is leading a transformative program to enhance customer experiences, driving innovation and exploring modern technologies in payment solutions.

As a Principal Engineer, you’ll play a pivotal role in shaping the future of Engineering at CommBank, championing cutting-edge solutions and fostering innovation that drives real-world impact. Your technical expertise and leadership will guide the team in addressing complex challenges while ensuring scalability, security, and reliability in all deliverables.

See yourself in our team

While the Payment Domain is part of the Business Banking unit, its reach extends to every part of the Bank. The team consists of engineers and technology leaders with a diverse set of skills to support this transformation. The team is also responsible for driving Engineering Governance, Continuous Delivery, and key technological simplification initiatives such as Cloud and Payments Event-based architecture.

As a Principal Engineer, you'll be a key team member, providing technology and domain expertise to shape technical strategy. You'll design solutions for complex challenges within a business unit, with a strong focus on security from the first line of code. You'll also encourage others to enhance their engineering skills while building top-tier applications.

We’re interested in hearing from people who:

• Have experience decomposing monoliths, Or experience of building microservices at scale, Or experience of building data intensive APIs, Or experience of building event driven applications.
• Have real world experience of operating microservices in the DevSecOps model.
• Have real world experience of addressing Tech Debt using a commercially focused and pragmatic approach.
• Have real world experience of building high performing Engineering teams and upskilling lower performing teams.
• Identifies, gains support and ensures execution of technical direction and strategy for the business.
• Designs and implements solutions to complex problems, including onboarding and migrating to new tooling as well as removing obsolete systems and code.
• Encourages risk-taking and constructively challenges the status quo while influencing stakeholders and building diverse and inclusive teams.

Skills Required

This is a highly technical role, requiring a broad range of skills, tools, languages, and frameworks and should include a number of the following:

Technical Skills

• Cloud: AWS, Serverless, Containers, and VM Hosting
• Databases: AWS Database technologies (Aurora, RDS, Redis), ElastiCache, Oracle
• Languages: Typescript, Java, Python, C#
• Eventing: SQS, SNS, EventBridge, KAFKA (MKS)
• Engineering: Github, Github Actions, Terraform Enterprise, Artifactory, AKKA, SST
• Observability: OpenTelemetry, Prometheus, Grafana, Observe, CloudWatch
• Security: Vault, Security Management, Parameter Store, AWS Certificate Manager, AWS Secrets Manager
• Design skills
• Testing: TDD, BDD, Automation Framework
• System Design: Tech debt, data-intensive applications, database design, API design, microservices, event-driven and serverless architecture
• Engineering: Deployment methodologies, SRE
• Payments: NPP, SWIFT, BIAN- Desirable
• AI: AI in engineering (e.g., Cline, CoPilot), RAG, MCP, Gen-AI, Agentic-AI, machine learning
• Certifications (preferrable) - AWS: AWS Solutions Architect and DevOps Engineer Professional; AI: AWS AI Practitioner and Machine Learning Specialty
• Containers: Certified Kubernetes Administrator (CKA) / Certified Kubernetes Developer (CKD)

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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