Northrop Grumman Australia is seeking a highly skilled Hardware System Administrator (HWSA) to join the team in Exmouth, Western Australia. This key role provides onsite maintenance, mission readiness, and technical support while closely collaborating with the DARC Program Office in Colorado Springs, USA. This position will provide you with the opportunity to travel to the USA. Act as a Linux Systems Administrator, supporting multi-user systems in collaboration with network, software, and system engineers. Ensure system stability and performance through regular maintenance, upgrades, patching, monitoring, and troubleshooting. Evaluate, recommend, and implement system enhancements to improve reliability and efficiency. Work with Cisco routers, switches, and firewalls, implementing and troubleshooting LAN and WAN technologies. Provide third-level network support and participate in after-hours or weekend support as required. Work with HPC clusters, including GPUs, schedulers, and parallel file systems. Liaise with vendors to evaluate products and services, ensuring compatibility with operational requirements. Lift and install hardware components (up to 15kg). Australian Citizen (mandatory for security clearance). NV1/NV2 Clearance (or eligibility to apply). Valid Australian Driver's Licence. Strong Linux/Red Hat Administration skills. CCNA certification (or equivalent experience). Excellent communication, interpersonal skills, and attention to detail. Ability to manage multiple complex tasks efficiently.