IT Network Administrator

IT Network Administrator

Working pattern: Initially office-based, with flexibility to work on a hybrid basis following successful completion of probation

Working hours: 8:00am-4:00pm, 8:30am-4:30pm, 9:00am-5:00pm or 10:00am-6:00pm

Department: IT

We are looking for an experienced IT Network Administrator to support the implementation, maintenance and continued improvement of a complex IT network environment.

This is a varied technical role covering wired and wireless networking, VMware administration, network security, infrastructure projects and third-line support. You will help maintain a reliable and secure network across multiple sites while supporting ongoing upgrades and improvement projects.

Key responsibilities

• Install, maintain and troubleshoot Cisco and HP wired and wireless networks.

• Provide third-line technical support for complex infrastructure and networking issues.

• Administer and support VMware environments.

• Maintain and patch network switches, wireless LAN controllers and access points.

• Monitor and maintain network communication cabinets and associated infrastructure.

• Support the design and development of network architecture and infrastructure models.

• Manage cloud connectivity and ensure reliable access to cloud-based services.

• Administer network security controls, including access control lists and Cisco ISE.

• Conduct vulnerability testing, Microsoft baseline assessments and vulnerability remediation.

• Maintain high availability across internet connectivity, servers, wireless networks, telephony and SAN storage.

• Support disaster recovery planning, testing and implementation.

• Assist with infrastructure installations, system upgrades and wider IT projects.

• Conduct Wi-Fi signal surveys and resolve issues involving coverage, interference and signal overlap.

• Maintain accurate network diagrams, technical documentation and asset records.

• Participate in occasional out-of-hours remote support and installation work.

Essential skills and experience

• CCNA certification.

• Hands-on experience supporting Cisco networking environments.

• Strong network troubleshooting skills across LAN, WAN and Wi-Fi environments.

• Experience maintaining switches, wireless controllers and access points.

• Previous experience providing third-line infrastructure or network support.

• A good understanding of network security, access controls and vulnerability remediation.

• Strong communication, documentation and problem-solving skills.

Desirable experience

• HP switching and wireless technologies.

• VMware administration and support.

• Cisco ISE.

• Cloud connectivity and hybrid infrastructure.

• Wireless surveys and access point optimisation.

• Server, storage, telephony and data centre environments.

• Change control and IT service management processes.

• Disaster recovery and business continuity planning.

This is an excellent opportunity for a network professional looking for a hands-on role with responsibility across infrastructure, security, wireless networking and technical improvement projects.