• We're building the platform that powers Australia's investing future.
• You bring deep backend, cloud and AI-augmented engineering expertise.
• Together we scale the systems that process every trade, order and portfolio decision at CommSec.
Do work that matters:
We are hiring a Staff Engineer Software role within CommSec Technology's Product & Investing Crew — the engineering group responsible for the core platforms behind order management, trade lifecycle, clearing & settlement, complex products and portfolio value management. You'll design and build the backend services and cloud infrastructure that process high-volume, high-integrity financial transactions for one of Australia's largest online brokerage platforms.
You'll work primarily across backend services and cloud platforms — designing resilient APIs, event-driven systems in C#/.NET on AWS — with the ability to influence architectural decisions across distributed, transaction-critical systems. Front-end exposure is a bonus, not a requirement: our priority is deep backend, systems and cloud engineering capability.
See yourself in our team:
As a Staff Software Engineer, you'll be joining the Product & Investing Crew within CommSec — the crew that owns the platforms behind order lifecycle, equities trade processing, clearing & settlement, complex products, and portfolio & value-proposition management. Our squads span the full trading lifecycle: from order placement and execution through to settlement, client monies, and post-trade remediation. We build and operate the systems that keep millions of trades processing accurately, securely and at scale every day.
Our engineers take full ownership from design through deployment, monitoring and continuous improvement, partnering closely with product and domain leads across our value streams. We're leaning into AI-assisted engineering — using tools like Claude Code and Copilot to accelerate delivery, automate code review and testing, and raise the bar on quality — while solving hard distributed-systems problems in a regulated, high-integrity trading environment.
We're interested in hearing from people who:
- Have deep backend engineering experience in C#/.NET and REST API design, with a strong grasp of distributed systems, transactional integrity and event-driven architecture.
- Design and build scalable, secure services on AWS — comfortable with cloud-native patterns, containers and infrastructure-as-code.
- Take end-to-end ownership across the SDLC, from design and development through to deployment, observability and production support.
- Contribute to solution design and architecture decisions for systems handling high-volume, high-integrity financial transactions — balancing scalability, performance, security and reliability.
- Apply engineering best practices including CI/CD, automated testing, observability and performance optimisation.
- Use AI-assisted engineering tools (e.g. Claude Code, Copilot) to accelerate development, automate testing/code review, and raise team-wide engineering standards.
- Are comfortable working with SQL/NoSQL databases, messaging/event streaming, and workflow orchestration in a domain with complex business rules (trading, settlement, clearing).
- Partner with product owners and domain leads to translate complex financial/trading requirements into robust technical solutions.
- Mentor engineers and contribute to technical excellence, standards and continuous improvement across the crew.
- Some front-end exposure (React/TypeScript) is a plus but not required — this role is weighted toward backend, platform and cloud engineering.
Tech skills:
We don't expect you to know everything, but experience in several of the following will set you up for success:
- System Design & Architecture: Distributed Systems, Event-Driven Architecture, Solution Design
- Backend Engineering: C#, .NET, Microservices, REST APIs
- Cloud & Platform Engineering: AWS, Cloud-Native Applications, Infrastructure as Code
- Data & Messaging: SQL, Query Optimisation, Event-driven systems, message queues (e.g. SQS/SNS)
- DevOps & Engineering Excellence: CI/CD, Docker, Kubernetes, Observability, Automated Testing
- AI-Assisted Engineering: GitHub Copilot, Claude Code
- Nice to have: React, TypeScript
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.
Skills Required
- Deep backend engineering experience with C# and .NET
- Experience designing REST APIs
- Strong understanding of distributed systems, transactional integrity, and event-driven architecture
- Experience building scalable and secure services on AWS
- Familiarity with cloud-native patterns, containers, and infrastructure as code
- End-to-end SDLC ownership, including deployment, observability, and production support
- Experience with CI/CD, automated testing, observability, and performance optimization
- Experience with SQL or NoSQL databases, messaging or event streaming, and workflow orchestration
- Experience using AI-assisted engineering tools such as GitHub Copilot or Claude Code
- Experience partnering with product owners and domain leads to develop technical solutions
- Experience mentoring engineers and contributing to technical standards
- React and TypeScript experience
Commonwealth Bank Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Commonwealth Bank and has not been reviewed or approved by Commonwealth Bank.
-
Leave & Time Off Breadth — The bank offers additional Life Leave, the option to purchase up to four extra weeks, pet leave, and paid volunteering leave alongside flexible-working options. Public materials indicate these leave features compare well within Australian banking.
-
Parental & Family Support — Permanent employees can access up to 18 weeks of paid parental leave, and superannuation is paid for up to 34 weeks of unpaid parental leave. These provisions extend support for new parents beyond standard settings.
-
Wellbeing & Lifestyle Benefits — Access includes CBHS Health Fund, Fitness Passport, a 24/7 wellbeing platform with telehealth, an Employee Assistance Program, and employer‑paid income protection for up to two years, alongside staff banking perks and share plans. This combination provides day‑to‑day value across health, protection, and financial perks.
Commonwealth Bank Insights
What We Do
Australia’s leading provider of financial services including retail, premium, business and institutional banking, funds management, superannuation, insurance, investment and sharebroking products and services. We are a business with more than 800,000 shareholders and over 52,000 employees. We offer a full range of financial services to help all Australians build and manage their finances.
.png){kind=logo}
