Senior Software Engineer

• We’re transforming engineering through quality, automation and full-cycle ownership.
• You have strong full-stack skills, technical judgement and end-to-end ownership.
• Together we build secure, scalable technology that turns data into real-world insights.

Do work that matters:

As a Senior Software Engineer within CommBank IQ, you’ll be a hands-on, full-stack engineer with true end-to-end ownership, leading the technical delivery of complex features and initiatives from discovery and solution design through build, testing, deployment and production support. You’ll translate complex business and product requirements into secure, reliable and maintainable software, influence technical decisions and work closely with Product Owners and engineers to shape pragmatic solutions. You’ll champion strong engineering practices across automated testing, CI/CD, observability and production readiness, while tackling technical debt and improving system reliability. As a senior member of the team, you’ll also mentor other engineers, strengthen technical judgement and help build a culture of engineering excellence, continuous improvement and shared ownership.

See yourself in our team:

Join the CommBank iQ Engineering Chapter, where technology, data and analytics come together to turn complex transaction data into meaningful insights. CommBank iQ is a joint venture between Commonwealth Bank and Quantium, combining CBA’s transaction data with Quantium’s data and analytics expertise to help organisations better understand customers, spending behaviours, markets and emerging consumer trends.

As part of Engineering, you’ll work in a full-stack, full-cycle environment, building and owning technology from design and development through to deployment, observability and ongoing operation. You’ll tackle meaningful engineering challenges, work closely with data and product teams, and help build secure, scalable and reliable products that transform data into real-world insights. It’s an opportunity to bring strong engineering craft, curiosity and ownership to a team where the technology you build has a clear purpose.

We’re interested in hearing from people who:

• Have experience leading complex engineering features and initiatives from solution shaping through to production.
• Are hands-on in designing, building, testing and maintaining reliable, secure and maintainable software.
• Can translate complex business and product requirements into pragmatic technical solutions and clearly explain engineering trade-offs.
• Partner effectively with Product Owners and stakeholders during discovery, identifying technical dependencies, feasibility concerns and delivery risks early.
• Balance delivery speed with software quality, security, maintainability, technical debt and the long-term health of systems.
• Take ownership of complex production and operational issues, identifying recurring patterns and driving systemic improvements.
• Demonstrate strong engineering practices across code reviews, automated testing, observability, CI/CD and production readiness.
• Mentor engineers through pairing, code reviews and technical discussions, helping others develop stronger technical judgement and problem-solving skills.
• Collaborate across engineering teams and contribute to a culture of technical excellence, continuous improvement, constructive challenge and shared ownership.

Tech skills

We don't expect you to know everything, but experience in several of the following will set you up for success:

• Front End: TypeScript, React, Next.js, Storybook; modern, scalable and maintainable user-facing applications.
• Back End: Node.js, GraphQL, REST APIs; server-side engineering and API development.
• Database: PostgreSQL; relational database development and production support.
• Cloud, Essential: AWS; strong hands-on experience designing, deploying and operating applications in AWS.
• Infrastructure as Code, Essential: Terraform; Bicep or equivalent IaC transferable, with AWS remaining the required cloud environment.
• Additional Cloud & Infrastructure: Azure, Cloudflare, Docker.
• DevOps & CI/CD: GitHub, GitHub Actions, CI/CD pipelines, Monorepo tooling.
• Testing & Quality: Jest, Playwright, automated testing, production-quality engineering practices.
• Monitoring & Observability: Application Insights, monitoring, logging, troubleshooting, production observability.
• Architecture: Distributed systems, system design, secure, scalable, reliable, maintainable and operable solutions.
• Engineering Practices: Full-cycle engineering, production ownership, incident response, debugging, continuous improvement.
• AI & Developer Productivity: Claude Code, GitHub Copilot, Agentic AI workflows, AI-assisted code generation, testing, debugging, prompting and context management.
• Technical Leadership: Technical judgement, code reviews, mentoring, engineering decision-making, hands-on individual contribution.

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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