At Harrison McMillan, our mission is easy: to change lives, one placement at a time. As a trusted recruitment partner to government and industry, we connect exceptional people with opportunities where they can make a genuine impact.

Harrison McMillan is seeking an experienced Security Engineer to support and uplift cybersecurity operations, Microsoft Sentinel capability, and security tooling within a federal government environment.

This is a long-term 12-month contract with 2 x 12-month extension options and is based in ACT. Hybrid working arrangements are available.

Due to the nature of this role, a minimum Baseline security clearance with the ability to obtain Negative Vetting Level 1 is required.

Key Responsibilities:

- Configure and troubleshoot log source integrations into Microsoft Sentinel and related SIEM platforms.
- Develop alerting rules, threat response playbooks, and KQL queries to support investigations and threat hunting.
- Administer and maintain cybersecurity tooling including SIEM, WAF, DLP, vulnerability scanners, proxy solutions, and application whitelisting.




- Support cyber uplift initiatives and ensure alignment with ISM, PSPF, and Essential Eight frameworks.
- Mentor junior team members and collaborate across business and government stakeholders.

Essential Criteria:

- Minimum 5 years’ experience with Microsoft security technologies including Sentinel, Intune, Entra Active Directory, Purview, and Microsoft 365.
- Proven experience maintaining, operating, and automating SIEM technology.
- Strong experience in team collaboration, business engagement, and cyber uplift projects.
- Experience implementing ISM controls, PSPF, and Essential Eight strategies.
- Relevant industry certifications.

Desirable Criteria:

- Experience with incident response processes.
- Experience across broader cybersecurity domains including SecOps and GRC.

RFQ Closing Date: Tuesday, 11 August 2026, 11:59pm Canberra time

Apply now or contact the Harrison McMillan team for a confidential discussion.

📌 Cyber Security (Barton)
🏢 Harrison McMillan
📍 Barton