Network Administrator - GEOSPACES Program

About the role

Leidos Australia's Software Solutions business delivers custom and off-the-shelf software to Defence, Intelligence and other Government sectors. It is seeking multiple experienced Network Administrators for its GEOSPACES program, supporting advanced national security technology in a secure, high-compliance government environment. The role keeps mission-essential network services available, secure and reliable.

Key responsibilities

• Manage and maintain network infrastructure, including switches, routers, firewalls and wireless access points, supporting critical data and voice networks.
• Provide Level 2 and Level 3 incident response, troubleshooting complex network and connectivity issues and restoring services with minimal disruption.
• Implement and maintain network security controls, including firewall policies and monitoring, to protect against unauthorised access and cyber threats.
• Configure network devices, monitor performance and capacity, and keep accurate network topology, configuration and procedural documentation.

Required profile

• Practical network administration experience and the ability to troubleshoot and maintain enterprise networks in a secure environment.
• Australian citizenship with an active TSPV security clearance, and the ability to be successful for a DISA/OSA.
• Ability to maintain clear technical documentation on configurations, topology and procedures.
• Advantageous: Level 2 or 3 support experience in complex, secure or high-availability environments, and experience with performance monitoring, capacity management and optimisation.

Required skills

• Networking fundamentals: TCP/IP, DNS, DHCP, VLANs and routing protocols such as OSPF and BGP.
• Hands-on experience with Cisco, Juniper, Palo Alto or Fortinet.
• Firewall and network security device management and policy work.
• Use of network analysis and monitoring tools such as Wireshark or SolarWinds.

The hiring process starts with a conversation with the Talent Acquisition team, followed by an interview with the hiring manager or panel, and possibly a role-specific assessment or customer step. Applications are made through the Apply Now button with a resume.