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Network Security Engineer

Infosec People — United Kingdom · Posted ~7 hours ago

Mid Full-time

Skills

Network engineering Network security WAN LAN Wi-Fi Firewall management Cisco networking Fortinet security Azure networking Vulnerability remediation Network performance management Cisco Fortinet Microsoft Azure Firewalls

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Summary ✨ AI‑Generated

A Network Security Engineer role supporting a secure enterprise network environment for critical services in the UK. You will manage WAN, LAN, Wi-Fi, and firewall infrastructure, work with Cisco and Fortinet technologies, support Azure networking, review technical designs, remediate vulnerabilities with cybersecurity teams, and manage network performance, capacity, and availability.

Highlights

Opportunity to work on secure enterprise infrastructure supporting critical services across the UK, with broad exposure to Cisco, Fortinet, and Azure networking. The role combines operational responsibility with major infrastructure projects, service improvements, security initiatives, and collaboration with cybersecurity teams.

Description

We're currently supporting a leading organisation within the Utilities and Critical National Infrastructure sector in the search for a Network Security Engineer to join their expanding Technical Operations team. This is an excellent opportunity to play a key role in maintaining and enhancing a highly secure enterprise network environment supporting critical services across the UK. You'll work across a varied infrastructure estate covering Cisco networking, Fortinet security technologies and Azure cloud networking whilst contributing to major infrastructure projects, service improvements and security initiatives. What You'll Be Doing Managing and supporting WAN, LAN, Wi-Fi and firewall infrastructureMaintaining Cisco and Fortinet network environmentsSupporting Azure networking servicesReviewing technical designs and ensuring security best practiceWorking closely with Cyber Security teams on vulnerability remediationManaging network performance, capacity and availabilityActing as an escalation point for complex technical issuesDriving automation and operational improvementsCollaborating with internal stakeholders and external service providersSupporting critical infrastructure services within a secure environment What We're Looking For Strong Network Engineering experienceCisco routing and switching expertiseExperience with Cisco ACI and FMGStrong Fortinet skills including FortiGate environmentsAzure networking experienceKnowledge of BGP, VPNs, VLANs, DNS and DHCPExperience of network security technologies and firewallsExperience with network monitoring tools such as SolarWindsCCNA certification or equivalent Desirable AZ-700 certificationNAC experienceNetwork automation and scriptingIDS/IPS technologiesExperience within highly regulated environments Benefits Hybrid workingGenerous pension schemeAnnual bonus opportunityPrivate healthcareLife assuranceOngoing training and certification supportCareer progression opportunitiesExposure to large-scale enterprise infrastructureIf you're looking for an opportunity to work on critical infrastructure projects within a highly secure and technically advanced environment, we'd love to hear from you.