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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # IT Administrator - **Company:** CGT - **Location:** Cambridge, UK - **Experience:** Expert - **Salary:** £85,000.0 - £95,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Microsoft Antivirus, User Authentication, Microsoft Azure, Backup Devices, Border Gateway Protocol, Microsoft Online Services, Cloud Computing, Cloud Computing Security, Cyber Security, Computer Networks, System Configuration, Dynamic Host Configuration Protocol, Network Address Translation, Domain Name System (DNS), Multi-Factor Authentication, Monitoring of Systems, Intrusion Detection and Prevention, Subnetting, Virtual Private Networks (VPN), Network Troubleshooting, Windows Servers, Network Installation Services, Routing, Network Segmentation, Packet Analyzer, Network Administration, Azure Active Directory, Cloud Services, Zero Trust Network Access, Runbook, Web Application Security, Microsoft SharePoint, TCP/IP, Wireshark, Virtual Local Area Networks, Virtual Machines, Virtualization Technology, WhatsUp Gold (Software), Wireless Networks, Wireless Telecommunications, EndPointSecurity, Network Routers, Enterprise Software Applications, ARUBA, Software Troubleshooting, HybridCloud, Firewalls (Computer Science), Microsoft InTune, Web Filtering, Information Technology, Performance Monitor, CIS Benchmarks, Cisco, User Accounts, Vmware - **Published:** September 3, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5867240228 ## About the Role * Demonstrated experience in IT infrastructure, systems administration, networking, cybersecurity, or a similar technical role. * Strong experience supporting Windows Server, Active Directory, Microsoft 365, and Microsoft Azure environments. * Experience with virtualization platforms, preferably VMware. * Strong understanding of TCP/IP, DNS, DHCP, VLANs, subnetting, routing, switching, VPNs, and wireless networking. * Experience administering firewalls, endpoint-security tools, MFA, and secure-access technologies. * Experience supporting enterprise backup and recovery solutions. * Strong troubleshooting, documentation, communication, and organizational skills. * Ability to manage multiple priorities and work independently in a fast-paced environment. * Availability to participate in scheduled after-hours work and an on-call rotation when required., * Experience with Aruba networking, Aruba Central, or ClearPass. * Experience with Cisco FMC, Sophos, Cisco Umbrella, or Duo. * Experience with Microsoft Entra ID, Intune, and Microsoft Defender. * Experience with Cohesity, Clumio, or similar backup platforms. * Familiarity with BGP, hybrid-cloud connectivity, and enterprise network architecture. * Familiarity with monitoring tools such as WhatsUp Gold. * Knowledge of ITIL, change management, cybersecurity frameworks, and infrastructure governance. * Relevant certifications such as Microsoft Azure, Microsoft 365, Cisco, Aruba, VMware, CompTIA, or ITIL are considered an asset. Other required skills: * Ability to manage and support multiple priorities. * Strong communication skills - listening, clarifying, understanding, speaking and facilitating. * Ability to work independently as well as part of a team. Education: * Diploma or degree in Information Technology, Computer Science, Network Administration, or a related field, or equivalent professional experience. Experience: * 5+ years of related experience Working Environment: * Usually work in an office, plant and lab environment, but the mission of the organization may sometimes take them to non-standard workplaces. * Standard work week, but additionally may work evening, weekends, and additional hours to accommodate activities and priorities. This position is not eligible for Overtime pay. * Domestic travel may be required - must have valid driver's license. * Generally requires low physical demands. ## Description We are seeking a hands-on IT Administrator to manage and support the organization's IT infrastructure, including networking, systems, cloud services, cybersecurity, and end-user support. This role is responsible for maintaining secure, reliable, and highly available IT environments across multiple locations. The ideal candidate has broad infrastructure experience, strong troubleshooting skills, and the ability to manage both day-to-day operations and infrastructure improvement projects. IT Infrastructure and Systems * Administer and maintain on-premises and cloud-based IT infrastructure. * Manage Windows servers, virtualization platforms, storage systems, backups, and enterprise applications. * Support VMware environments, including virtual machine provisioning, performance monitoring, upgrades, and lifecycle management. * Manage backup, recovery, and business continuity solutions. * Monitor infrastructure availability, capacity, and performance. * Maintain system configurations, asset records, technical documentation, diagrams, and operational runbooks. Network Administration * Administer LAN, WAN, wireless, and inter-site connectivity. * Configure and troubleshoot switches, routers, VLANs, subnetting, routing, and network segmentation. * Support site-to-site and remote-access VPNs. * Manage Aruba wireless environments, including Aruba Central and ClearPass. * Assist with network deployments, upgrades, modernization initiatives, and infrastructure projects. * Perform network troubleshooting and packet analysis using tools such as Wireshark. Cloud and Microsoft 365 * Administer Microsoft Azure services, including virtual machines, networking, identity, and hybrid cloud connectivity. * Manage Microsoft Entra ID, Intune, and hybrid identity environments. * Support Microsoft 365 services, including Exchange Online, SharePoint, Teams, and Microsoft Defender. * Manage user accounts, groups, licenses, access permissions, and authentication policies. * Support cloud security, compliance, and endpoint management initiatives. Cybersecurity * Administer firewalls, secure web gateways, endpoint protection, multifactor authentication, and secure-access solutions. * Manage security policies, including NAT, ACLs, threat prevention, web filtering, and access controls. * Support Cisco FMC, Sophos, Cisco Umbrella, Duo, and Microsoft Defender environments. * Monitor, investigate, and respond to infrastructure and security incidents. * Work with cybersecurity teams to implement security baselines, remediate vulnerabilities, and improve the organization's security posture. * Support identity, authentication, network segmentation, and zero-trust security practices. Help Desk and Operational Support * Provide technical support and escalation assistance for hardware, software, network, account, and access-related issues. * Troubleshoot complex incidents affecting users, systems, applications, and infrastructure. * Manage endpoint deployment, configuration, patching, and lifecycle activities. * Support onboarding and offboarding processes. * Participate in an on-call rotation for critical outages and security incidents. * Follow ITIL-based incident, request, problem, and change-management practices. Vendor and Stakeholder Management * Coordinate with technology vendors, service providers, and external support partners. * Assist with purchasing, licensing, renewals, warranties, and asset lifecycle management. * Communicate technical issues, risks, and recommendations clearly to business stakeholders. * Support infrastructure projects, office deployments, upgrades, and technology improvements. ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) - [Turning Container security up to 11 with Capabilities](https://www.wearedevelopers.com/videos/718-turning-container-security-up-to-11-with-capabilities) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) ## Related Articles - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk) - [A Guide to Green Tech and Green IT Careers](https://www.wearedevelopers.com/magazine/374-a-guide-to-green-tech-and-green-it-careers) - [System change: restart as developer?](https://www.wearedevelopers.com/magazine/39-system-change-restart-as-developer) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers)