Staff Software Engineer

eCommerce Payments | Payments & Acceptance | Business Banking Technology | Sydney

Shape the future of digital commerce at scale

Build modern cloud-native products powering payment experiences for Australian businesses

Influence architecture, engineering standards and technical direction across a rapidly growing platform

Join a major transformation replacing legacy payment technology with modern in-house solutions

Do work that matters

At CommBank, we're building the future of digital commerce for Australian businesses.

Following the acquisition of a leading payment service provider, we're investing heavily in the next generation of our eCommerce platform. Our mission is to simplify how merchants onboard, accept payments, process transactions and receive settlements through modern, scalable technology built in-house.

See yourself in our team

As a Staff Software Engineer, you'll join one of our core engineering squads responsible for merchant onboarding or payment processing capabilities. You'll help design and build products that power the end-to-end eCommerce journey for some of Australia's largest businesses while influencing technical direction across a growing engineering organisation.

This is an opportunity to work on a platform that is actively being transformed, replacing legacy vendor solutions with modern cloud-native services and delivering new customer experiences at scale.

Business Banking Technology executes the technology strategy across Business Banking through the application of modern technology, resilient platforms and engineering excellence to deliver valuable customer outcomes at speed and scale.

You'll join the Payments & Acceptance domain, a growing engineering organisation of more than 60 engineers responsible for critical eCommerce capabilities including:

Merchant onboarding and activation

Payment transaction processing

Settlement and reconciliation services

eCommerce platform services

Customer-facing merchant experiences

With multiple strategic capabilities being launched throughout the year, you'll play a key role in shaping the architecture, engineering practices and customer outcomes of a platform that is still being built.

Grow. Belong. Shape what's next.

What you'll do

Lead the design and delivery of scalable, resilient and secure software solutions across our eCommerce payments platform

Build and evolve Java-based microservices supporting merchant onboarding, payment processing and settlement capabilities

Contribute across the technology stack, from backend services and APIs through to cloud infrastructure and customer experiences

Drive architectural decisions and influence engineering direction across squads

Champion engineering excellence through automated testing, CI/CD, observability and DevSecOps practices

Partner with product, architecture and business stakeholders to deliver meaningful customer outcomes

Mentor engineers and uplift technical capability across the team

Support production systems and continuously improve reliability, performance and operational excellence

We're interested in hearing from people who

Bring deep software engineering expertise and a passion for building scalable, customer-focused platforms. You'll be comfortable leading complex technical initiatives while remaining hands-on and close to delivery.

We're particularly interested in people who have:

Proven experience designing and delivering complex distributed systems at scale

Strong hands-on software engineering capability and a passion for solving challenging technical problems

Experience building microservices architectures within cloud-native environments

Strong architectural and systems design skills

A track record of mentoring engineers and influencing technical decision-making

Excellent stakeholder management and communication skills

The ability to balance strategic thinking with hands-on engineering delivery

A growth mindset and curiosity for emerging technologies and engineering practices

Technical experience

Experience with some of the following technologies will help you succeed:

Backend Engineering

Java

Spring Boot

RESTful APIs

Microservices Architecture

Event-Driven Systems

Domain-Driven Design (DDD)

Cloud & Platform

AWS

Kubernetes

Docker

Terraform and/or CloudFormation

Engineering Excellence

CI/CD Pipelines

Automated Testing

Observability and Monitoring

DevSecOps Practices

Agile Software Delivery

Front-End Technologies (Highly Regarded)

React

TypeScript

Node.js

Next.js

Emerging Technology

Exposure to AI-powered development or operational tooling

Interest in applying AI to engineering and security challenges

Experience evaluating and adopting new technologies

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. For support please contact 1800 989 696.

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.

We're aware of some accessibility issues on this site, particularly for screen reader users. We want to make finding your dream job as easy as possible, so if you require additional support please contact HR Direct on 1800 989 696.

Advertising End Date: 19/10/2026