Together. Works. Decmil is a Macmahon Company, a diversified contractor with projects across Australia and Southeast Asia. Here, you’ll find something different. We’re going places – and we want to take you with us. When you join Decmil, you’re not just getting a job – you’re joining a quality team that’s build together, and built to last.

Our Information

Systems and Technology team plays a key role in supporting our people and projects. You’ll work with skilled people wo care about doing things the right way and contributing to our teams’ success.

About the Role The Systems Administrator will play a critical role in implementing, maintaining, and supporting all aspects of networks, infrastructure, security, systems, and Information Systems Technology services across the Group.

Responsibilities Manage day to day operations of corporate and project IT systems. This includes monitoring, configuration, maintenance, and repairs.

Manage backup and disaster recovery processes. Restore data within agreed timeframes.

Work with internal staff and external vendors to patch and upgrade hardware and software.

Provide desktop support to corporate and project staff

Maintain high-quality data, systems and reporting Contribute to improvements that drive efficiency and safety

Role-model respect, confidentiality and integrity What You’ll Bring Minimum 2 year’s experience in a Systems Administrator role preferred.





Solid communication and stakeholder skills Practical problem-solving and attention to detail Commitment to teamwork and delivery of high-quality outcomes

Diploma or tertiary qualification in Information Technology preferred

Working knowledge of Microsoft 365 admin centre, Entra ID (Conditional Access, PIM), Intune (device/app/config management), Defender XDR, and Sentinel

Certifications preferred: MS-102 (Microsoft 365 Administrator), SC-300 (Identity and Access Administrator), or SC-200 (Security Operations Analyst)

Exposure to Essential Eight maturity uplift and ISO 27001 control environments viewed favourably

Advanced knowledge of Sharepoint Online Administration

Palo Alto experience beneficial Role Details Location: Decmil Head Office – Osborne Park WA

Roster: Monday to Friday

Competitive benefits package including: Paid Parental Leave for primary carers Retail discounts (including homewares, outdoor gear, fuel and groceries)

Novated leases Comprehensive wellbeing program Why Decmil? Work with people who know their stuff and back each other, within a respectful and genuine culture. Our structure is open, with no room for big egos. Real opportunities to learn and grow, with potential for exposure to diverse projects across Australia. Ready to make an impact? Apply now. United | Courage | Integrity | Pride

📌 IS&T Systems Administrator (Herdsman)
🏢 Decmil
📍 Herdsman