Posted:
4/8/2026, 3:09:25 PM
Location(s):
New South Wales, Australia ⋅ Sydney, New South Wales, Australia
Experience Level(s):
Expert or higher ⋅ Senior
Field(s):
DevOps & Infrastructure ⋅ Software Engineering
Staff Software Engineer – Full Stack (Rex Team)
Do work that matters
At CommBank, we build digital banking services used by millions. The Rex team designs and runs scalable, reliable platforms that power critical business capabilities and redefine customer experiences
See yourself in our team
As a Staff Software Engineer, you’ll play a hands‑on technical leadership role across the full SDLC—shaping architecture, building high‑quality software, and mentoring engineers. We’re AWS‑first, running our application stacks and data platforms entirely on AWS
What you’ll do
Design, build, and operate secure, scalable front‑end, backend, and data solutions
Lead end‑to‑end delivery on AWS: architecture, IaC, build, deploy, operate, and optimise
Build Python‑based batch and large‑scale data pipelines (ETL/ELT) on AWS
Develop event‑driven and streaming integrations for real‑time use cases
Influence architecture across microservices, APIs, data flows, and cloud infrastructure
Champion engineering excellence: code quality, testing, automation, and reliability
Mentor engineers and uplift technical standards across the team
Skills & experience
Core (Java & Python required):
Front‑end: React or Angular, TypeScript/JavaScript
Backend: Java (Spring Boot) and Python microservices
Data: Python data pipelines (e.g. PySpark/Beam), strong SQL
Streaming: Kafka or AWS Kinesis; event‑driven patterns
Architecture: Microservices, APIs, scalable and resilient systems
AWS experience:
Compute & containers: ECS/EKS, Fargate, Lambda
Data & analytics: S3, Glue/EMR, Step Functions
Integration: API Gateway, SQS/SNS, Kinesis/MSK
IaC & CI/CD: Terraform or CDK/CloudFormation, GitHub Actions
Observability & security: CloudWatch, tracing, IAM, encryption
Nice to have:
Experience deploying ML into production (batch or real‑time), MLOps concepts, or AWS ML tooling
We’re interested in people who
Deliver high‑quality software and data solutions at scale
Influence technical decisions and collaborate across teams
Care deeply about engineering craft, reliability, and simplicity
Mentor others and foster a culture of continuous improvement
Working with us
We support flexibility in how and where work is done, with at least half your time each month connecting in our Sydney office. Flexible options include adjusted start/finish times, part-time, and job share. You’ll be supported to tackle new challenges and thrive in a team that values customer impact, craftsmanship, and continuous learning.
If you’re excited to build at scale on AWS across services and data, care deeply about quality, and want to make a meaningful impact for millions of customers, we’d love to hear from you.
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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Website: https://commbank.com.au/
Headquarter Location: Sydney, New South Wales, Australia
Employee Count: 10001+
Year Founded: 1911
Last Funding Type: Post-IPO Debt
Industries: Banking ⋅ Finance ⋅ Financial Services ⋅ Wealth Management