PMB Defence is headquartered in Osborne, South Australia, in the heart of the Naval Shipbuilding precinct. We are globally recognised as a leader in the manufacture of submarine battery systems. Our story began in 1989, delivering and supporting the main storage batteries for Australia's Collins Class Submarines, and since then, we have significantly expanded our operations, securing various domestic and international contracts.
We proudly serve customers in Australia, Canada, the United Kingdom, and various other international markets, offering traditional (lead‐acid) and new technology (nickel‐zinc and lithium) submarine battery systems, products, services, and solutions.
Our commitment to excellence and innovation in the defence sector has been acknowledged through numerous accolades. In 2022, PMB Defence was honoured with the SME of the Year award at the Australian Defence Industry Awards, followed by the prestigious Export Business of the Year Award in both 2023 and 2024, underscoring our dedication to delivering high-quality solutions, products, support and services to our clients worldwide.
About the role
To support the next phase of the PMB Defence journey, an opportunity now exists for an experienced Senior Systems Administrator to be part of our team. Reporting to the Senior IT and Cyber Security Manager, this newly created role will provide key technical support, lead system enhancements and contribute to ICT projects that strengthen cyber resilience and operational capability.
Key Responsibilities
* Administer and optimise Microsoft 365 and Azure environments, including hybrid identity, access control, endpoint configuration, and system performance monitoring.
* Implement security baselines and policies aligned with Essential 8 and ISM requirements to maintain secure, reliable cloud and network operations.
* Provide Tier 3 technical support, mentor IT support staff, and proactively monitor and resolve incidents using Microsoft Defender, Sentinel, and centralised monitoring tools.
* Maintain reliable backup and recovery processes for Microsoft 365 and Azure workloads while ensuring accurate asset, licensing, and configuration records.
* Maintain strong cybersecurity controls across systems, devices, and user identities, responding to security alerts, vulnerabilities, and audit findings.
* Support compliance with ISM, PSPF, DISP, and Cyber Essentials+ (UK) standards, and assist with disaster recovery and incident response testing.
* Lead infrastructure and security projects focused on cloud optimisation, system modernisation, and automation, identifying and implementing improvements through scripting and automation tools.
* Collaborate with stakeholders and vendors to deliver technology solutions aligned with business and Defence compliance requirements, escalating complex issues when needed.
* Maintain accurate system configurations, policies, and recovery documentation while supporting ICT governance, audit readiness, and compliance with internal and Defence standards.
* Contribute to ICT roadmaps and drive ongoing improvements to strategic IT services and practices.
Candidate Requirements
* Tertiary degree qualifications (Bachelor of IT Systems Administration or similar) or equivalent demonstrated experience in a complex senior systems administration role.
* PowerShell scripting and cloud/identity automation.
* Experience with monitoring, logging, and backup solutions for cloud services.
* Knowledge of ISM, Essential 8, and zero‐trust security frameworks.
* Network fundamentals (DNS, DHCP, VPNs, firewalls).
* Experience in maintaining infrastructure systems and platforms within the framework governed by PSPF, ISM, CE+, and NIST.
* Customer‐focused mindset with a commitment to improving user experience and service quality.
* Collaborative and team‐oriented, with the ability to build effective relationships across the organisation.
* Excellent communication skills, with the ability to explain complex technical concepts to non‐technical stakeholders.
Prerequisites
* Be eligible to successfully obtain and maintain an NV1 Australian Defence Security Clearance (must be an Australian Citizen).
* Hold a current driver's licence.
* Ability to obtain a current police clearance.
* Ability to pass a pre‐employment medical and Drug & Alcohol screen.
* Ability to travel occasionally interstate and overseas for work and training purposes.
* Undertake six‐monthly/quarterly lead‐in blood testing.
Why PMB Defence?
At PMB Defence, we are proud to support Australia's sovereign defence capability. You will be part of a collaborative team that values safety, quality, and continuous improvement. We offer a supportive work environment, professional development opportunities, and the chance to make a real impact. PMB provides our team members with a variety of benefits including:
* Access to PMB Perks for you and your family – our very own employee benefits, discounts, rewards and recognition, and wellness platform, with hundreds of discounts available through retail, travel, entertainment, food/dining + more, and a platform of recipes, workouts and meditations.
* Company supplied iPhone.
* Flexible/hybrid working opportunities.
* Employee Referral Program.
* Company supported active Social Club.
* Corporate discounts on local businesses.
* Employee assistance program.
* Salary continuity insurance (if you join PMB's default superannuation fund).
* Salary sacrifice and novated lease options.
* Paid parental leave.
* PMB branded clothing allowance.
* Discounted banking and insurance.
* Free barista‐style coffee, tea and fresh fruit.
Ready to Apply?
If you are ready to take the next step in your career, we'd love to hear from you.
Click Apply Now and join a company that's powering the future of defence.
For confidential enquiries and further information, please contact [emailprotected].
PMB Defence are a 2026 Circle Back Initiative Employer and commit to respond to every applicant.
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