Senior Network Infrastructure Engineer

Key Areas of Responsibility

• Network Operations & Support
• Maintain and support EDL’s global enterprise network infrastructure across all business locations
• Ensure the availability, stability, integrity, and performance of network services
• Monitor network health, utilisation, performance, and capacity across enterprise environments
• Perform proactive troubleshooting, fault analysis, and root cause investigation of network issues
• Provide Level 2 and Level 3 technical support and escalation for complex network incidents and outages
• Participate in after-hours support, major incident response, and outage restoration activities where required
• Produce priority incident documentation and contribute to post-incident reviews and problem management activities
• Liaise with telecommunications providers, vendors, and managed service partners to ensure service delivery outcomes are achieved
• Network Security Responsibilities
• Operational ownership and lifecycle management of enterprise firewall platforms including Palo Alto Networks next-generation firewalls
• Manage firewall policies, NAT configurations, VPN services, security zones, threat prevention, and URL filtering technologies
• Support secure remote access and site-to-site connectivity solutions
• Perform network security hardening, segmentation, and access control activities
• Support vulnerability remediation and security improvement initiatives relating to network infrastructure
• Participate in cybersecurity incident response and remediation activities
• Ensure network environments align with EDL cybersecurity standards, regulatory obligations, and industry best practices
• Support security audits, compliance activities, and risk mitigation initiatives
• Collaborate with infrastructure, cloud, cybersecurity, and operational technology teams to improve overall security posture
• Engineering & Architecture
• Design and implement enterprise networking and connectivity solutions across global operations
• Develop and maintain network architecture standards, best practices, and technical documentation
• Produce detailed technical designs, implementation plans, topology diagrams, and as-built documentation
• Lead and support network transformation, migration, upgrade, and optimisation projects
• Contribute to infrastructure lifecycle planning, technology roadmaps, and capacity management activities
• Evaluate emerging technologies and recommend improvements to network reliability, security, and operational efficiency
• Drive continuous improvement and automation initiatives across network operations
• Contribute to disaster recovery, resilience, and business continuity planning
• Cloud & Hybrid Networking
• Design, support, and maintain hybrid cloud networking solutions across Microsoft Azure and on-premises environments
• Support cloud connectivity technologies including VPN, ExpressRoute, routing, segmentation, and secure access controls
• Assist with secure integration between corporate IT and operational technology environments where required
• Documentation & Governance
• Maintain accurate and up-to-date technical documentation, standards, diagrams, and operational procedures
• Ensure all changes are implemented in accordance with change management and operational governance processes
• Support continuous improvement of operational procedures and technical standards
• Contribute to operational reporting, capacity reporting, and performance analysis activities
• Leadership & Collaboration
• Act as a senior technical escalation point for networking and network security matters
• Provide technical mentorship and guidance to junior IT personnel and project teams
• Build and maintain effective working relationships with internal stakeholders, vendors, and service providers
• Work collaboratively with infrastructure, cybersecurity, operational technology, and business teams
• Demonstrate strong customer service and stakeholder engagement capabilities

Person Specification

Qualifications and Experience

• Essential
• Extensive enterprise networking experience within complex, geographically dispersed multi-site environments
• Proven experience designing, implementing, supporting, and troubleshooting enterprise network infrastructure
• Strong understanding of networking principles, architectures, and industry best practices
• Demonstrated experience supporting highly available and secure enterprise environments
• Strong troubleshooting and root cause analysis capability across complex networking environments
• Proven experience managing infrastructure upgrades, migrations, and operational support activities
• Experience working with global telecommunications providers and managed service vendors
• Ability to produce high-quality technical documentation and designs
• Strong stakeholder engagement and communication skills
• Demonstrated ability to work independently and within cross-functional teams
• Technical Skills & Technologies
• Enterprise Networking
• Cisco enterprise switching, routing, and wireless technologies
• Cisco Meraki networking platforms
• WAN, LAN, VLAN, QoS, BGP, MPLS, SD-WAN, and wireless networking technologies
• Voice and unified communications networking
• Network monitoring, logging, and performance analysis tools
• Network Security
• Palo Alto Networks next-generation firewalls
• VPN technologies and secure remote access solutions
• Network segmentation, firewall policy management, and security best practices
• Threat prevention, intrusion prevention, URL filtering, and security monitoring concepts
• Understanding of cybersecurity frameworks and network security principles
• Cloud Networking
• Microsoft Azure networking
• Hybrid cloud networking and secure connectivity solutions
• Cloud routing, VPN, and connectivity technologies
• Desirable
• Experience working within critical infrastructure, industrial, or operational technology environments
• Experience integrating networking with cybersecurity and cloud security platforms
• Experience participating in cybersecurity incident response activities
• The following certifications are highly regarded:
• Cisco CCNA / CCNP Enterprise
• Palo Alto PCNSA / PCNSE
• Microsoft Azure Network Engineer Associate
• Relevant industry certifications in networking or cybersecurity

About Company

Company