Network Engineer (Cisco)

Yolk Recruitment Ltd; Cardiff; On-site; GBP 55,000 - 90,000; Full time

Job summary

Yolk Recruitment Ltd is seeking a hands-on Network Engineer to support a leading Cardiff-based organisation within its Technical Operations team. You will implement, support and improve network infrastructure across WAN, LAN, Wi‑Fi and firewalls, including Azure networking and datacentre environments.

You will collaborate with Cyber Security, project teams and external service partners, acting as a key escalation point for network issues and ensuring security, reliability and peak performance

Qualifications

• Hands-on network engineering across WAN/LAN/Wi‑Fi/firewalls.
• Strong knowledge of Cisco routing and switching.
• Experience with Cisco ACI and Cisco FMG.
• Fortinet ecosystem experience.
• Understanding of TCP/IP, DNS, DHCP, VPNs, VLANs and network segmentation.
• Experience configuring and managing network firewalls, IDS/IPS, VPN, NAC.
• Azure networking experience (VNets, NSGs, VPN gateways).
• Troubleshooting and escalation skills.
• Ability to work with internal/external stakeholders.
• Willingness to support major incidents.

Responsibilities

• Implementing and supporting network infrastructure across WAN, LAN, Wi‑Fi and firewalls.
• Managing and supporting Cisco ACI, Cisco FMG and the Fortinet ecosystem.
• Working with Azure networking, including VNets, NSGs and VPN gateways.
• Reviewing technical designs and ensuring compliance with security policies.
• Managing network security across firewalls, IDS/IPS, VPN, NAC and segmentation.
• Collaborating with Cyber Security on remediation, risk assessments and threat intel.
• Escalation point for complex network incidents to minimise disruption.
• Coordinating with internal stakeholders and external service providers on changes.
• Monitoring network performance and identifying improvement opportunities.
• Maintaining accurate network configurations, topologies and documentation.
• Supporting integration of new networking technologies.
• Identifying opportunities for automation and reducing manual configuration.

Skills

Cisco routing

Cisco switching

Cisco ACI

Cisco FMG

Fortinet

Azure networking

DNS

DHCP

VPNs

VLANs

NAC

BGP

STP

WAN/LAN

Firewalls

SIEM?

Tools

SolarWinds

Azure Networking

NSGs

VPN gateways

Job description

We're working with a leading organisation operating who are looking to strengthen their Technical Operations team with an experienced Network Engineer.

This is a hands-on role where you'll be responsible for the implementation, support and ongoing improvement of network infrastructure across WAN, LAN, Wi-Fi and firewalls, covering datacentres, Azure and office/depot environments.

You'll work closely with internal technical teams, Cyber Security, project teams and external service partners, acting as a key escalation point for network issues and helping to ensure the organisation's network remains secure, reliable and performing at its best.

What You'll Be Doing

• Implementing and supporting network infrastructure across WAN, LAN, Wi-Fi and firewalls.
• Managing and supporting Cisco ACI, Cisco FMG and the Fortinet ecosystem.
• Working with Azure networking, including VNets, NSGs and VPN gateways.
• Reviewing technical designs and providing guidance to ensure solutions meet security policies and industry standards.
• Managing network security across firewalls, IDS/IPS, VPN, NAC and network segmentation.
• Working alongside the Cyber Security team on vulnerability remediation, risk assessments and threat intelligence.
• Acting as an escalation point for complex network incidents and helping minimise disruption to IT services.
• Working with internal stakeholders and external service providers on network changes, roadmaps and delivery.
• Monitoring network performance and identifying opportunities to improve reliability, performance and efficiency.
• Maintaining accurate network configurations, topologies and technical documentation.
• Supporting the integration of new networking technologies into the existing infrastructure.
• Identifying opportunities for automation and reducing manual network configuration activities.

What We're Looking For

We're looking for someone with strong hands-on network engineering experience who can operate comfortably across networking, security and cloud environments.

You’ll bring:

• Strong knowledge of Cisco routing and switching.
• Proven experience with Cisco ACI and Cisco FMG.
• Strong experience across the Fortinet ecosystem.
• Good understanding of TCP/IP, DNS, DHCP, VPNs, VLANs and network segmentation.
• Experience configuring and managing network firewalls, IDS/IPS, VPN and NAC technologies.
• Experience with routing protocols such as BGP and switching technologies including STP and VLANs.
• Experience working with Azure networking, including VNets, NSGs and VPN gateways.
• Strong troubleshooting and problem-solving skills, with experience acting as an escalation point for network issues.
• Experience working with internal stakeholders, technical teams and external service providers.
• The ability to work under pressure and support major incidents where required.

We'd Be Particularly Interested If You Have

• CCNA or equivalent certification.
• AZ-700 / Microsoft Azure Networking certification.
• Experience working with NAC.
• Experience with network monitoring platforms such as SolarWinds.
• Experience with network automation and scripting.
• Experience working within a CNI, regulated or similarly security-conscious environment.

Why This Role?

This is an opportunity to join an expanding Technical Operations function and have a genuine impact on the security, availability and performance of a critical network environment.

You’ll have exposure across networking, security, Azure and infrastructure, while working closely with Cyber Security, Architecture, Projects and senior technical stakeholders.

If you're a Network Engineer who enjoys solving complex technical problems, improving network environments and working across both operational and project-based challenges, we'd be keen to hear from you.

Interested?