Network Administrator

RESPONSIBILITIES

• Monitor network availability, performance, capacity, and security; respond to incidents and restore services within agreed priorities.
• Administer and maintain firewalls, routers, switches, wireless infrastructure, internet connectivity, local and wide area networks, and network segments.
• Deploy, configure, test, upgrade, and document network devices and services in accordance with security and change-management standards.
• Troubleshoot complex network issues with the service desk, regional IT teams, vendors, and other technical teams; identify root causes and implement corrective actions.
• Maintain secure network configurations, firewall policies, segmentation, remote access, firmware, configuration backups, and recovery procedures.
• Perform scheduled reviews of network health, resilience, capacity, security controls, and configuration compliance; document findings and track actions to completion.
• Test high-availability and disaster recovery capabilities, address single points of failure, and support business continuity requirements.
• Lead assigned network workstreams and improvement initiatives, including planning, risk management, implementation, testing, stakeholder communication, and transition to operations.
• Maintain accurate network diagrams, addressing plans, configuration standards, asset records, runbooks, change records, and operational documentation.
• Communicate service impacts, project status, risks, dependencies, decisions, and outcomes clearly to technical and business stakeholders.
• Participate in planned after-hours maintenance and provide support for critical network incidents in accordance with the established support model.

REQUIREMENTS

• Operations & Change Management: 7+ years managing multi-site network lifecycles, firmware updates, technical documentation, and formal change control.
• Fortinet Fabric & Core Security: Deep expertise in FortiGate, FortiManager, FortiAnalyzer, FortiSwitch, and FortiAP, specializing in firewall policies, SD-WAN, VPNs, and HA.
• Network Infrastructure & Wi-Fi: Strong foundation in Layer 2/3 routing and switching, VLANs, network segmentation, and enterprise wireless deployments.
• Hybrid Cloud & Identity: Skilled in Azure networking (VNets, NSGs, IPsec) and integrating network access with Entra ID, Active Directory, and MFA.
• Troubleshooting & Analysis: Adept at root-cause analysis using CLI tools, packet captures, debug flows, and centralized logging across physical and vSphere environments.
• Resilience & DR/BCP: Proven track record designing, testing, and supporting mission-critical networks with documented disaster recovery and business continuity plans.

WE OFFER

• Key Performance Incentive Bonus
• 5-day work week and bank holiday
• Comprehensive medical and dental benefits
• Life insurance coverage
• Flexible working hour
• Staff discount
• Green Monday lunch box (once a month)
• Health check subsidy and half day leave
• Friendly working environment
• Professional on-job-training and career development opportunities