Staff Software Engineer – Full‑Stack Web Applications

About the role

CommSec is looking for a senior full‑stack engineer to lead the design, development and operation of customer‑facing web applications that power digital investing for millions of Australians. You will own outcomes across the entire stack, from React front‑ends to C#/.NET REST APIs, and help shape the future of the platform.

Key responsibilities

• Design, build and maintain responsive React/TypeScript user experiences.
• Develop secure, scalable REST APIs and services using C#/.NET Core on AWS.
• Lead architectural decisions, balancing performance, security and reliability.
• Implement CI/CD pipelines, automated testing and observability practices.
• Mentor engineers and drive technical excellence across the team.

Required profile

• Deep full‑stack web development experience with React, TypeScript, C# and .NET.
• Proven ability to lead technical delivery and make architecture decisions.
• Experience delivering cloud‑native applications on AWS, using Docker and Kubernetes.

Required skills

• React, TypeScript
• C#.NET Core
• REST APIs
• AWS, Docker, Kubernetes
• SQL / MSSQL / NoSQL databases
• CI/CD, automated testing, performance optimisation
• Azure (optional), Java (optional)