Staff Software Engineer - Consumer Cards

Commonwealth Bank; Sydney; On-site; AUD 180,000 - 250,000; Full time

Benefits offered by this job

Flexible working options

Office in Sydney/Melbourne

Job summary

Commonwealth Bank is seeking a Staff Software Engineer to lead the core Consumer Finance platform. You will design and build scalable, cloud‑native systems using Next.js, TypeScript, GraphQL, .NET, and AWS, while mentoring engineers and driving technical uplift across squads.

You will shape the engineering roadmap, own end‑to‑end delivery, and foster strong DevSecOps practices in a fast‑paced, collaborative environment with real customer impact.

Qualifications

• Experience delivering full‑stack, cloud‑native solutions at scale.
• Ability to shape technical strategy while maintaining hands‑on proficiency.
• Proven track record in modern development practices including CI/CD, testing, and observability.

Responsibilities

• Own technical roadmap and architectural decisions across squads.
• Lead design, build, and operation of scalable card platforms and services.
• Mentor engineers and contractors to grow capability across the crew.
• Collaborate with senior leaders to drive cloud‑native design and DevSecOps practices.

Skills

Full Stack

Technical leadership

Cloud-Native

Next.js

TypeScript

C#/.NET

AWS

API design

Tools

GraphQL

OpenAPI

Playwright

GitHub Actions

CI/CD

Job description

We’re building tomorrow’s bank today!

Do work that matters

As a Staff Software Engineer role at the core of Consumer Finance, you will help build, simplify and modernise the products, processes and infrastructure that underpin CBAs cards offering. You will work on critical capabilities such as credit card Netbank next and commsee 2.0, transforming the whole user experience and cards journey. You’ll design and build scalable applications on AWS, while delivering modern and intuitive front end using TypeScript and Next.js, including emerging AI-powered experiences.

This role goes beyond hands‑on delivery into technical leadership and strategic influence. You’ll help shape the engineering roadmap, drive technical uplift across squads, and raise standards in cloud‑native design, full‑stack engineering and modern development practices. Partnering closely with senior and executive leaders, you’ll turn strategy into outcomes while mentoring engineers and contractors, and growing capability across the crew. The work is fast paced, highly collaborative and constantly evolving, with real customer impact at scale. If you’re motivated by solving complex problems and building technology people rely on daily, this is a role where your expertise truly matters.

See yourself in our team

The Consumer Cards Transformation crew is a tight‑knit, highly technical group within CBA’s broader Consumer Finance Domain, focused on building and evolving our Consumer card products and overall platform. This chapter owns critical card platforms and underlying BIAN based service domain APIs, that process millions of transactions every day, operating at scale, under constant demand and with zero tolerance for failure. The team works end‑to‑end across modern, cloud‑based systems, covering card authorisation, clearing, cards administration and operation and cards inquiry, ensuring customers can use their cards for their day‑to‑day needs.

We’re interested in hearing from people who

• Operate as aStaff Software Engineer (Full Stack) with full‑cycle, end‑to‑end ownership across design, build, run and optimisation with a “build and own it” attitude
• Act as atechnical SME and engineering leader, shaping long‑term technical strategy while remaining deeply hands‑on
• Design, build and operaterobust, scalable, cloud‑native solutions using Next.js, Typescript, GraphQL, .NET, C#, AWS
• Influence and evolveplatform architecture, including microservices, event‑driven integrations and cloud‑native deployment patterns
• Championengineering standards and best practices across software engineering processes
• Leadhigh‑quality delivery through CI/CD, test automation, observability and strong DevSecOps practices
• Bring a strongAI enablement mindset, with hands‑on exposure to AI‑assisted tooling and a clear drive to continuously upskill
• ApplyAI‑assisted development and emerging agentic patterns to lift developer productivity and improve system design

Tech skills

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

• Front End: Hands on Next.js (must have), typescript
• Back End: C#, .NET, PostgreSQL or other relational databases, REST APIs
• API Design & Integration: RESTful APIs, OpenAPI, API versioning, contract‑first design, API design patterns
• Cloud‑Native & Microservices: AWS services such as ECS, Lambda, S3 and RDS, microservices architecture, event‑driven systems
• Quality Engineering & Testing: Integration testing, contract testing, non‑functional testing, API testing, test automation frameworks, Playwright
• DevSecOps & Automation: GitHub Actions, CI/CD, Infrastructure as Code, Vulnerability management and remediation, secrets management
• Observability & Reliability: CloudWatch, OpenTelemetry, distributed tracing, metrics, logging, alerting and production support
• AI Enablement & Assisted Engineering: LLMs, prompt and context engineering, AI coding assistants, MCP, RAG fundamentals, agentic AI concepts, agent orchestration

Working with us

We support our people with the flexibility to balance where work is done with at least half their time connecting in our Sydney or Melbourne 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.

Commonwealth Bank Group (including Bankwest, x15ventures)

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