Cyber Security

Harrison McMillan Pty Ltd; Australia; Hybrid; AUD 110,000 - 160,000; Full time

Benefits offered by this job

Hybrid work arrangements

Job summary

Harrison McMillan is seeking an experienced Security Engineer to support cybersecurity operations, Microsoft Sentinel, and security tooling within a federal government environment in Australia. The role is a 12-month contract with potential extensions and hybrid work arrangements in ACT.

The successful candidate will hold baseline security clearance and be capable of obtaining Negative Vetting Level 1, with responsibility for SIEM configuration, alerting, playbooks, and tooling administration

Qualifications

• Minimum 5 years' experience with Microsoft security technologies including Sentinel, Intune, Entra AD, Purview and Microsoft 365.
• Proven experience maintaining, operating, and automating SIEM technology.
• Experience implementing ISM controls, PSPF, and Essential Eight strategies.

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.

Skills

Team collaboration

Mentoring juniors

Threat hunting

Security operations

Education

Industry certifications

Tools

Microsoft Sentinel

Intune

Entra Active Directory

Purview

Microsoft 365

SIEM

KQL

Job description

At Harrison McMillan, our mission is simple: 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