Systems Administrator

Lockheed Martin is hiring a Systems Administrator for its Melbourne, Australia site. This full-time, onsite role focuses on the reliable operation, performance, and security of multi-user computer systems, working closely with network and infrastructure teams. The company emphasises a flexible environment and the chance to contribute to national security programs across space, air, land, sea and cyber domains. Applicants must be Australian citizens and eligible to obtain and maintain an active Australian Defence security clearance for the position.

The successful candidate will enjoy hands-on problem solving, collaboration with internal stakeholders and vendors, and a clear path to shaping how computing resources are used and protected. The role touches Windows and Linux operating systems, virtualization, enterprise services, and security practices, with responsibilities spanning user and service account management, software deployments, storage planning, and backup and recovery processes.

Keeping the systems humming in Melbourne

Day to day, you’ll keep multi-user systems running smoothly and securely, partnering with network colleagues to troubleshoot and optimise performance. You’ll handle the nuts and bolts of system administration, from configuring and maintaining accounts to documenting procedures, rolling out software, and managing storage, while ensuring backup and recovery processes stay current. You’ll provide user support, evaluate technology options, and contribute recommendations on hardware, software, and infrastructure improvements. Operating with a good degree of autonomy, you’ll use sound judgement to resolve issues and support technology projects that align with organisational requirements and service expectations.

What you’ll need to bring to the team

Here’s what is considered essential to start:

• Australian citizenship with the ability to obtain and maintain an active Australian Defence security clearance
• Tertiary qualifications in information technology, computer science, or a related discipline, or equivalent practical experience in systems administration

Desirable capabilities include hands-on work with virtualised environments, server infrastructure and backups; administering enterprise services such as Active Directory, DNS, and DHCP; applying security hardening across servers and virtualization layers; supporting networking and data centre activities; creating and maintaining technical documentation; and using scripting or automation to improve routine tasks.

Compensation and practical details

The role is full-time and onsite in Melbourne. The listing does not specify a salary figure. It requires Australian citizenship and the ability to obtain and maintain an Australian Defence security clearance. Employment may be contingent on providing additional personal information to help meet export control regulations.

Advice for applicants

Lead your resume with the core systems administration work you’ve done in an enterprise setting, and open with a summary that highlights your experience with Windows, Linux, virtualization, and enterprise services like AD, DNS, and DHCP, plus your security-minded approach and backup responsibilities.

Back up your claims with concrete examples from your work. Describe how you managed virtualised environments, performed deployments, implemented hardening measures, and collaborated with network teams or vendors to keep services running smoothly.

Be ready to discuss real-world scenarios during interviews, such as resolving an outage, implementing a security control, or supporting data centre tasks. Expect questions about documentation, change management, and how you communicate with non-technical users during incidents or deployments, as well as how you relate to the security clearance process.

Ask a smart question about the role’s practical realities, for instance which virtualization platforms are in use today and what the top priorities for hardening and automation are, or how the team balances ongoing admin work with project work while meeting governance expectations. You could also inquire how success is measured for the role in the first six months and what automation projects are currently underway.