Stay hands-on, designing and building microservices, BFF services, REST and GraphQL APIs, data access layers and event-driven integrations on AWS
Lead complex initiatives, including moving core payment capabilities onto modern platforms, from proof of concept to production
Set and raise engineering standards for testing, safe deployment, observability and security
Upskill engineers through pairing, design reviews and mentoring, and share knowledge through guilds and internal writing
Own what you ship in production: lead incident response and complex troubleshooting calmly, and join our on-call roster
We're interested in hearing from people who
Have deep, hands-on experience shipping and running back-end services, APIs and BFFs in C# .NET in production
Have strong, hands-on AWS experience building and operating cloud-native services in production (must have)
Have hands-on experience designing and building GraphQL APIs (schema design, resolvers, federation), with OData or similar query-based API experience a plus
Have designed systems at enterprise scale, including service boundaries, API contracts, data models and event-driven architecture, and can explain the trade-offs clearly
Stay calm and methodical under pressure, bringing clarity during incidents and leading blameless follow-ups
Are passionate about sharing knowledge and helping senior and mid-level engineers grow
Have led technical work across teams, bringing engineers and stakeholders along and challenging them when it matters
Use AI-powered engineering tools (e.g. Claude, Copilot) effectively and help others do the same
It's a bonus if you have native iOS (Swift) or Android (Kotlin) experience, have built backends for mobile clients, or know payments and fraud (transaction flows, reconciliation, and PCI DSS and APRA obligations).
Working with us
At CommBank, we’re committed to creating an accessible, inclusive and respectful workplace. If you require support or adjustments, please let us know. We welcome applications from people of all backgrounds and we’re particularly committed to making a positive difference for Aboriginal and/or Torres Strait Islander Peoples.
If this sounds like you, apply now!
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: 29/11/2026
