Principal Platform Engineer

You Are… A seasoned Platform Engineer with deep expertise in PostgreSQL We Are… A forward-thinking team building world-class tools Together We Can… Revolutionise the future of banking technology See Yourself in the Team CommBank’s Technology team is globally recognised for engineering excellence and AI leadership, delivering award-winning solutions that make brighter better for our customers. Our Database and DevSecOps enablement crew are a strategic enabler in our commitment to continuous innovation, delivering cutting-edge tools and technologies crucial for ensuring the usability, security, and compliance of our database infrastructures. Dedicated to leveraging the latest technologies, they provide secure, scalable, and efficient database solutions. Your Impact and Contribution As a Principal Platform Engineer, you’ll influence engineering best practices and lead strategic initiatives across our Database and DevSecOps platforms, championing resilience, automation, and secure design. As a Principal Platform Engineer, you’ll influence engineering best practices and lead strategic initiatives across our Database and DevSecOps platforms, championing resilience, automation, and secure design. You’ll lead the design, implementation, and support of PostgreSQL environments across private and public cloud (AWS), embedding security and automation into every layer of our infrastructure. You’ll collaborate with a highly skilled team of engineers in a solution-focused environment that values innovation, continuous learning, and technical excellence. To achieve this, you may expect to: Architect and maintain robust PostgreSQL environments, ensuring high availability, performance, and security. Develop and deploy infrastructure-as-code (IaC) solutions to automate operational tasks and improve platform reliability. Champion DevSecOps practices, integrating security into CI/CD pipelines and platform operations. Deploy and manage monitoring and alerting tools (e.g. Prometheus, Grafana, Splunk, CloudWatch) to proactively identify and resolve infrastructure issues. Embed Site Reliability Engineering (SRE) principles to drive platform resilience and performance, while influencing engineering best practices across squads. Leverage AI-powered engineering tools (e.g. GitHub Copilot, automated code reviews, anomaly detection) to accelerate development and improve operational efficiency. Maintain high-quality documentation to support knowledge sharing and operational consistency. Stay ahead of industry trends, continuously improving platform architecture and engineering practices. Mentor engineers and contribute to a culture of collaboration, innovation, and continuous learning. Key Skills & Experience Deep expertise in PostgreSQL database engineering, including performance tuning, replication, backup/recovery, and security. Proven experience managing cloud environments (AWS, VMware, Converged Infrastructure). Demonstrated ability to embed Site Reliability Engineering (SRE) principles into platform operations, while influencing engineering best practices across teams. Hands-on experience with automation tools such as Ansible, Terraform, GitHub Actions, and CloudFormation. Experience with monitoring and observability tools such as Prometheus, Grafana, Nagios, Splunk, and CloudWatch. Solid understanding of cloud-native technologies, networks, virtualisation, and containerisation (e.g. Kubernetes, Docker). Strong scripting and programming skills (Python, Bash, Go, SQL, PL/pgSQL). Experience with AI-assisted development tools and practices (e.g. GitHub Copilot, automated testing, intelligent alerting). Excellent analytical and troubleshooting skills, with a proactive approach to problem-solving. Your Career at CommBank Whether you’re passionate about customer service, driven by data, or called by creativity, a career with CommBank is for you. We support our people with the flexibility to balance where work is done with at least half your time each month connecting in our Sydney 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 for you. Here, you’ll thrive. You’ll be supported when faced with challenges and empowered to tackle new opportunities. We’re hiring engineers from across Australia and have opened technology hubs in Melbourne and Perth. We really love working here, and we think you will too. 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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