3rd Line System Administrator - Juniper or Cisco - DV Cleared

3rd Line System Administrator – Juniper or Cisco

Must have an Active DV Clearance.

You will be responsible for incident resolution, system monitoring, infrastructure support, and technical troubleshooting across a broad range of enterprise technologies. The position is ideal for an experienced 2nd or 3rd Line Systems Administrator looking to develop their skills further. Candidates willing to work in Corsham are particularly encouraged to apply, and flexibility on technical experience will be considered. Legacy infrastructure training will be provided where required.

Please note successful applicants will be required to be security cleared prior to appointment which can take a minimum 18 weeks.

• Provide 2nd and 3rd Line support for secure infrastructure and user services.
• Monitor systems and respond to incidents through the service management toolset.
• Configure, troubleshoot, and resolve infrastructure and network faults.
• Support Windows Server, Active Directory, VMware, Exchange, and core infrastructure technologies.
• Perform user administration, system maintenance, and operational support activities.
• Analyse Windows log files and diagnose technical issues.
• Support network technologies including routing, switching, firewalls, MPLS, and BGP.
• Deliver existing implementation solutions and contribute to service improvements.
• Participate in shift work where required.

• Experience providing 2nd or 3rd Line infrastructure support.
• Strong knowledge of Windows Server 2012/2022 and VMware technologies.
• Experience with Active Directory, GPO, DNS, DFS, User Account Management, and Exchange.
• Strong troubleshooting and analytical skills.
• Experience configuring and fault-finding network devices.
• Knowledge of routing, switching, MPLS, BGP, and enterprise firewalls.
• Experience with Juniper networking technologies is desirable; strong Cisco experience will also be considered.
• Knowledge of HSM, PKI, or hardware encryption would be advantageous. Training will be provided where required.
• Excellent customer service and communication skills.
• Ex‑Military Signals experience would be advantageous.

We are committed to fostering an inclusive, equitable and accessible workplace where everyone feels valued and supported. We welcome applications from all individuals, regardless of background or identity, and we encourage candidates who may not meet every listed requirement to still apply. If you require any adjustments or support during the recruitment process, please let us know and we will work with you to ensure a fair and accessible experience.