Network Engineer

Experis UK; Cheltenham; On-site; GBP 45,000 - 75,000; Full time

Job summary

Experis UK is seeking Network Engineers at varying levels of experience to join our growing technical team. You will design, implement, maintain, and enhance enterprise network infrastructure to ensure availability, performance, and security across environments.

You will work with infrastructure, security and platform teams on routing, switching, and modernization. The role offers exposure to SDN, cloud networking (AWS/Azure), automation, and monitoring tools, with opportunities to mentor junior

Qualifications

• Strong foundation in TCP/IP, routing and switching.
• Experience supporting enterprise networks and security.
• Familiar with multiple vendors (Cisco/Juniper/Arista/HPE/Fortinet).
• Understanding SDN and data centre networking concepts.
• Ability to work with automation and IaC tools to improve operations.

Responsibilities

• Support design, implementation, and maintenance of LAN/WAN and data centre networking.
• Monitor performance, investigate faults, and resolve incidents.
• Assist with upgrades, migrations, and transformations.
• Configure switches, routers, firewalls, and related devices.
• Support security controls, VPNs, access policies, and secure connectivity.
• Maintain documentation, diagrams, and runbooks.
• Assist capacity planning, performance tuning, and resilience improvements.
• Engage with virtualization and cloud networking concepts.
• Contribute to networking automation and IaC initiatives.
• Collaborate with cross-functional teams to deliver reliable services.
• For senior candidates: lead work packages, mentor juniors, influence architecture.

Skills

TCP/IP

Routing & switching

VLANs

DNS and DHCP

Network troubleshooting

Enterprise networking

Security concepts

Analytical thinking

Stakeholder communication

Learning mindset

OSPF/BGP/EIGRP/MPLS

Firewalls & VPNs

Wireless networking

Cloud networking (AWS/Azure)

Automation tools (Ansible, Python, TF)

Monitoring platforms

SDN & data centre tech

Tools

SolarWinds

Zabbix

PRTG

LibreNMS

Ansible

Python

Terraform

VMware ESXi

Hyper-V

KVM

Proxmox

AWS

Azure

Job description

We are seeking Network Engineers at varying levels of experience to join our growing technical team. Whether you are developing your networking career or bring significant experience in enterprise networking environments, this role offers opportunities to work with modern network technologies, contribute to critical infrastructure projects, and develop your technical expertise.

You will support the design, implementation, maintenance, and enhancement of enterprise network infrastructure, helping to ensure the availability, performance, and security of services across our environments.

Working alongside infrastructure, security, and platform engineering teams, you will gain exposure to a diverse range of networking technologies including routing, switching, network security, virtualisation, automation, and cloud-connected environments.

Key Responsibilities

• Supporting the design, implementation, and maintenance of LAN, WAN, and data centre networking solutions.
• Monitoring network performance and availability, investigating faults, and resolving incidents.
• Assisting with network upgrades, migrations, and transformation projects.
• Configuring and maintaining switches, routers, firewalls, and related network infrastructure.
• Supporting network security controls, including firewalls, VPNs, access control policies, and secure connectivity solutions.
• Maintaining network documentation, diagrams, and operational procedures.
• Assisting with capacity planning, performance optimisation, and resilience improvements.
• Supporting virtualised and software-defined networking environments.
• Contributing to network automation and Infrastructure as Code initiatives where appropriate.
• Working collaboratively with infrastructure, security, and application teams to deliver reliable services.
• For more experienced candidates, leading technical work packages, mentoring junior engineers, and contributing to architectural decisions.

Key Skills & Experience

• Understanding of networking fundamentals, including:
• TCP/IP
• Routing and switching
• VLANs
• DNS and DHCP
• Network troubleshooting methodologies
• Experience supporting enterprise network environments.
• Familiarity with one or more network vendors such as Cisco, Juniper, Arista, HPE, or Fortinet.
• Understanding of network security concepts and best practices.
• Strong analytical and problem-solving skills.
• Ability to communicate effectively with technical and non-technical stakeholders.
• Willingness to learn and develop technical expertise.
• Experience with routing protocols such as OSPF, BGP, EIGRP, or MPLS.
• Experience with firewall technologies and VPN solutions.
• Knowledge of wireless networking technologies.
• Experience with virtualisation platforms such as VMware ESXi, Hyper‑V, KVM, or Proxmox.
• Exposure to cloud networking concepts within AWS, Azure, or hybrid environments.
• Familiarity with networking automation tools such as Ansible, Python, Terraform, or similar technologies.
• Experience using monitoring and management platforms such as SolarWinds, Zabbix, PRTG, LibreNMS, or equivalent.
• Understanding of Software Defined Networking (SDN) and modern data centre networking technologies.