As a result of continued growth within Seisma Group, an exciting opportunity has arisen for a Senior Platform Engineer to join one of our premium clients in Sydney.

Backed by Australian-owned Superannuation funds, Seisma is committed to growth both organically and through acquisition. With over 550 employees across Melbourne, Sydney, and New Zealand, we are expanding rapidly with a strong blueprint for further growth this year.

About the Role

We are seeking a Senior Platform Engineer to join the SaaS Security Posture Management (SSPM) Squad within CBA’s Cyber Security division. This role plays a critical part in supporting CBA’s major modernisation program to strengthen the security of its SaaS ecosystem.

You’ll be responsible for implementing, configuring, tuning, and managing CBA’s SSPM technology solutions, enabling secure integrations with SaaS partners and driving automation to support self-service across the enterprise.

Key Responsibilities

- Implement, configure, and manage SaaS Security Posture Management (SSPM)



and Threat Protection (TP) solutions.
- Support the design, build, and deployment of custom connectors to integrate CBA’s SaaS partners into the SSPM platform.
- Tune and maintain security posture baselines and associated threat detection configurations for onboarded SaaS platforms.
- Contribute to the automation development and DevSecOps practices, enabling teams to self-serve through productive, secure automation.
- Collaborate closely with platform, security, and application teams to ensure smooth onboarding and continuous improvement of SaaS security capabilities.
- Work with CI/CD pipelines to deliver secure and repeatable deployments.
- Support the development and integration of security-focused automation tools and processes.

Skills & Experience

- Proven experience as a Platform Engineer, DevSecOps Engineer, or similar

📌 Platform Engineer (City of Sydney)
🏢 Seisma Group
📍 City of Sydney