Network Engineer

La Fosse; Southampton; Hybrid; GBP 59,000 - 72,000; Full time

Benefits offered by this job

Hybrid working model

Wellbeing focus

Career development

High-performing team

Job summary

La Fosse is seeking a Network Engineer to support and enhance an enterprise network across on-prem, cloud, and hybrid environments in a UK financial services setting. The role emphasises hands-on network maintenance, high availability, and collaboration with wider IT teams.

You will design, implement, and optimise routing, switching, security, and connectivity while adhering to governance, incident, and change processes. A strong focus on documentation and continuous improvement is required.

Qualifications

• Hands-on experience maintaining enterprise network environments.
• Familiarity with routing, switching, and security in large-scale networks.
• Experience with incident, change and problem management per ITIL.

Responsibilities

• Monitor and optimise LAN/WAN, cloud and hybrid networks.
• Troubleshoot complex network issues and act as escalation for major incidents.
• Design and implement network solutions across routing, switching, security and connectivity.
• Maintain high availability and resilience of the network estate.
• Contribute to RCA and continuous improvement initiatives.
• Support network change activity per governance and security policies.
• Collaborate with IT teams on projects and BAU delivery.
• Document network architecture and best practices.

Skills

Networking

Cisco networking

VPN & security

Wireless networking

ITIL processes

Stakeholder comms

Cloud networking

Education

CCNA or equivalent

Tools

Cisco ISE

F5

Check Point

PowerShell

Python

Job description

Network Engineer

Location: Southampton

Salary: £65,000 + 10% bonus

About the Role

We’re working with a well-established UK financial services organisation who are looking to bring in an experienced Network Engineer to support and enhance their enterprise network environment.

This is a hands-on role where you’ll be responsible for maintaining, optimising, and improving a complex network estate spanning on-prem, cloud, and hybrid environments. You’ll play a key role in both BAU operations and project delivery, ensuring high availability, performance, and security across the business.

Key Responsibilities

• Monitor, manage, and optimise network infrastructure across LAN, WAN, cloud, and hybrid environments
• Support and troubleshoot complex network issues, acting as an escalation point for major incidents
• Design and implement network solutions across routing, switching, security, and connectivity
• Maintain high availability and resilience across the network estate
• Contribute to root cause analysis (RCA) and continuous improvement initiatives
• Support network change activity in line with governance and security policies
• Monitor and manage data centre and network environments including LAN, WAN, and wireless
• Collaborate with wider infrastructure and IT teams to support projects and BAU delivery
• Contribute to network documentation and operational best practices

Experience Required

• Strong experience working within enterprise network environments
• Cisco-focused networking expertise (routing & switching, Nexus, enterprise-grade infrastructure)
• Experience managing firewalls, VPNs, and network security technologies
• Hands-on experience with wireless networking (APs, controllers)
• Experience supporting large-scale network environments
• Understanding of network design, architecture, and traffic flow
• Familiarity with ITIL processes such as incident, change, and problem management
• Ability to work under pressure and support multiple concurrent priorities
• Strong communication and stakeholder engagement skills

Desirable

• CCNA (or equivalent certification)
• Experience with cloud networking (Azure or hybrid environments)
• Exposure to tools such as Cisco ISE, F5, or Checkpoint firewalls
• Experience with automation or scripting (PowerShell/Python)

What’s on Offer

• Hybrid working model
• Strong focus on wellbeing, flexibility, and career development
• Opportunity to work within a high-performing, collaborative team
• Exposure to modernisation and network transformation projects

If you’re a Network Engineer looking to work in a stable but forward-moving environment with strong investment into infrastructure and people, this is a great opportunity to step into a visible and impactful role.