4Square Recruitment Ltd
Network Administrator
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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.
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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.
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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.
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