Senior Systems Administrator - OT/IT

About the role

BAE Systems is seeking a Senior Systems Administrator in South Australia (Edinburgh) to support Operational Technology (OT) and IT environments. The role covers the infrastructure, servers, networks and integrated platforms behind operational and industrial technology, bridging OT and enterprise IT where availability, security, reliability and controlled change are critical. It combines day-to-day operation, support and maintenance of OT/IT services with hands-on support of operational technology environments.

Key responsibilities

• Administer, support and maintain OT and associated IT infrastructure, systems and services
• Provide systems administration across Windows and Linux server environments, including storage and virtualisation platforms
• Support secure integration, connectivity and interoperability between OT and enterprise IT
• Perform system upgrades, patching, backups, recovery and disaster recovery
• Monitor performance, capacity, availability and security compliance, and investigate and resolve infrastructure, networking, OS and application issues
• Collaborate with engineering, cybersecurity, project and other teams on new solutions and improvements
• Maintain technical documentation, configurations, support procedures and operational records
• Contribute to cybersecurity, vulnerability management, patching and hardening
• Support project delivery through design, implementation, testing, transition and commissioning

Required profile

• Bachelor's degree in computer science, information technology or a related field, or equivalent experience
• Significant experience administering Windows or Linux servers; capability across both highly desirable
• Sound understanding of networking and cybersecurity principles, including patching, hardening, access controls and vulnerability management
• Experience with Cisco networking is advantageous
• Ability to obtain and maintain a Baseline security clearance; applicants must be Australian citizens and eligible to hold one

Required skills

• Windows and Linux server administration
• Networking and cybersecurity fundamentals
• System monitoring, backup, recovery, storage, virtualisation and high-availability solutions
• Strong troubleshooting and stakeholder communication skills

The employer offers flexible work arrangements, including a 9-day fortnight hybrid model, and states that security clearance is required for the role.