Network Administrator

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Our team feel Leidos is a great place to work. Learn more about our culture and benefits by visiting us here https://www.leidos.com/company/global/australia/careers

Do Work That Matters

Leidos Australia delivers IT and airborne solutions that protect and advance the Australian way of life. Our 2000 local experts, backed by our global experience and network of partners, are working to solve the world’s toughest challenges in government, intelligence, defence, aviation, border protection and health markets.

Your New Role and Responsibilities

Leidos Australia is seeking multiple skilled Network Administrators to join our AGO GEO SPACES program, delivering advanced national security technology solutions in a secure, high-compliance government environment.

These key technical roles are responsible for the installation, configuration, maintenance, and reliable operation of the organisations data and voice communication networks, ensuring the stability, integrity, and security of critical network services that support mission-essential operations. Responsibilities in these roles will include;

• Manage and maintain network infrastructure hardware, including switches, routers, firewalls and wireless access points, to ensure high availability and performance.

• Provide Level 2 and Level 3 incident response and resolution for network outages and complex connectivity issues, minimising disruption to business operations.

• Implement and enforce network security policies, manage firewall rules and conduct ongoing monitoring to safeguard the network from unauthorised access and cyber threats.

• Configure network devices and maintain accurate, up‑to‑date documentation of network topology, configurations and procedures.

• Monitor network performance, identify bottlenecks and apply optimisation strategies to maintain optimal network health and capacity.

What You’ll Bring to Make An Impact

• Strong understanding of core networking principles, including TCP/IP, DNS, DHCP, VLANs and routing protocols such as OSPF and BGP.

• Hands‑on experience working with enterprise‑grade networking hardware, including platforms such as Cisco, Juniper, Palo Alto and Fortinet.

• Experience managing and troubleshooting network security devices and firewall policies.

• Proven ability to use network analysis and monitoring tools, such as Wireshark and SolarWinds, to diagnose and resolve complex network issues.

Don’t worry if you don’t tick all the boxes – if you meet most of them, we encourage you to submit your application. We’re most interested in your strengths, what you want to learn and how far you want to go.

Due to the nature of the role, you must be an Australian Citizen who holds an active TSPV security clearance; accompanied by the ability to be successful for a DISA/OSA.

Diverse Team Members, Shared Values and a Common Purpose

Providing our customers with smarter solutions takes an incredible team with diversity of thought, experience and perspectives driving innovation. Inclusion is at the heart of our culture and is one of our core values. It's about creating a workplace where everyone can do important work, feels welcome, valued, and respected, and has equal access to opportunities to thrive. Paul Chase – Chief Executive, Leidos Australia.

Leidos Australia is an equal opportunities organisation and is committed to creating a truly inclusive workplace. We welcome and encourage applications from Aboriginal and Torres Strait Islanders, culturally and linguistically diverse people, people with disabilities, veterans, neurodiverse people, and people of all genders, sexualities, and age groups.

Our five Advocacy Groups (Women and Allies Network, Young Professionals, Defence & Emergency Services, Action for Accessibility and Abilities and Pride+) provide an opportunity for team members to connect and collaborate on shared interests, and work to support and celebrate our diverse community.

Next Steps

• To apply for this role, follow the links or apply via our Careers page.

• Recruitment process - 2 interviews, background checks & DISA/OSA.

• Applicants may also need to meet International Traffic in Arms Regulations (ITAR) requirements. In certain circumstances this can place limitations on persons who hold dual nationality, permanent residency or are former nationals of certain countries as per ITAR 126.1.

• We are committed to making our recruitment process accessible to all candidates. Please contact our Careers team careers.au@au.leidos.com if you’d like to discuss any additional support during your application or throughout the recruitment process.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

Pay Range:

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.