Staff Software Engineer - CommBiz Mobile & Insight crew

Commonwealth Bank; Sydney; Hybrid; AUD 140,000 - 190,000; Full time

Job summary

Commonwealth Bank in Sydney is seeking a Staff Software Developer to join the CommBiz Mobile & Insight squad. You will design and develop backend microservices and REST APIs, while contributing to frontend work on web and native apps.

You will mentor junior engineers, participate in engineering guilds, and drive high-quality software with Agile practices, CI/CD, and secure coding standards.

Qualifications

• Proven hands-on experience in backend development with C# .NET Core and REST APIs.
• Experience in frontend frameworks such as Next.js, React, and Angular with TypeScript.
• Experience in enterprise-scale solution architecture and design.
• Strong collaboration, communication and ability to influence stakeholders.
• Hands-on with full SDLC, Agile practices, CI/CD, automated testing, logging and monitoring.

Responsibilities

• Design and develop microservices and data access layers.
• Build REST APIs and integration services for third-party consumption.
• Manage risk with safe deployments and automated testing.
• Contribute to frontend work on web and native applications.
• Mentor junior engineers and participate in engineering guilds.

Skills

C# .NET Core

REST APIs

TypeScript

NodeJS

NextJS

React

WebAPI

Angular

Security best practices

Tools

Kubernetes

Docker

GitHub Actions

TeamCity

Octopus

Azure DevOps

CI/CD

Job description

• You are passionate, driven, flexible and collaborative
• We are high performing engineers pushing the boundaries of software engineering
• Together we will build tomorrow’s bank today, using world-leading technology and innovation

Do work that matters

Business Banking Technology is responsible for the world-leading application of technology and operations across every aspect of CommBank – from innovative product platforms for our customers, to essential tools within our business. We also use technology to drive simplicity and better banking, an essential component of great customer service underpinning a strong emphasis on software development as a craft and the adoption of industry best engineering practices.

See yourself in our team

As a Staff Software Developer, you will be part of a small squad within the CommBiz Mobile & Insight crew. You will be working with engineers on backend API and native CommBiz Mobile App for enterprise size clients. We offer regular opportunities to work on some of the finest IT systems in Australia, as well as opportunity to develop careers across different functions and teams within the wider Bank.

You’ll be hands‑on coding and be responsible for shaping the evolution of this system by designing and developing micro services, data access layers, REST API(s), and writing integration services for third‑party API consumption, manage risk with safe deployments and automated testing, as well as learning more about back‑end engineering. You will have the opportunities to work on frontend web and native applications. You’ll also be invited to join our regular engineering guilds and provide technical guidance to the junior members of the team.

We Are Interested In Hearing From People Who Have

• Proven hands‑on experience in developing backend applications using such as C# .NET Core, REST APIs, WebAPI, TypeScript, Node.JS, Next.JS
• Proven hands‑on experience in developing front applications using Next.js, React.js, Angular, TypeScript
• Proven experience in solution architecture design for enterprise scale applications
• You’re passionate about building developing and deploying high quality software solutions
• Pride themselves on their ability to collaborate, present ideas, influence and challenge stakeholders
• You’re actively involved in continuous learning, experimentation and innovation, ready to apply and promote industry best patterns and practices, driving high quality outcomes to solve core business objectives
• Solid hands‑on experience with the full software development lifecycle and delivery using Agile practices. GitHub, CI/CD, Automated Testing, infrastructure cloud pipelines, logging and monitoring.
• Are constantly thinking outside the box and breaking boundaries to solve complex technical problems and core business objectives
• Are knowledgeable of security best practices and principles
• Work on cross‑functional projects, ensuring alignment and addressing inter‑dependencies
• Coaching and mentoring junior members in the team

Tech Skills

We use a broad range of tools, languages, and frameworks. We don’t expect you to know them all but experience or exposure with some of these (or equivalents) will set you up for success in this team:

• C# .NET Core, REST APIs and WebAPI
• NodeJS, NestJS, ExpressJS, TypeScript
• Angular, React, NextJS
• AI powered engineering tools (e.g. Claude, Copilot)
• Micro services and REST API Integration
• Create database designs for both relational and NoSQL databases such as DocumentDB, MSSQL, Oracle and Snowflake
• Build and hosting technologies (e.g., Kubernetes, Docker)
• GitHub, TeamCity, Octopus, Git Hub Action
• CloudFormation + AWS Code Pipeline, Azure DevOps
• Cloud hosting platforms AWS and Microsoft Azure
• Familiarity with public cloud engineering - AWS or Azure or Microservices or Kafka/event-based architecture
• Understanding of monitoring tools and CI/CD pipeline. (TeamCity, Octopus, GitHubAction, Observe, Splunk)
• Demonstrated knowledge of security best practices and principles.
• Test Automation tools

Working with us

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.

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Advertising End Date: 15/09/2026