Senior Network Engineer

You will be part of a senior engineering team responsible for maintaining network availability, security, and performance, with participation in an on-call rota and occasional out-of-hours work when required., * Support and maintain a large-scale enterprise network environment

• Diagnose and resolve complex network incidents and problems
• Configure, manage, and troubleshoot Juniper network and security platforms
• Support WAN/LAN infrastructure, routing, Firewalling, and high-availability designs
• Work within ITIL-based service management processes
• Document network configurations, processes, and changes clearly
• Engage with technical and non-technical stakeholders effectively
• Participate in on-call support and occasional travel to remote sites

Essential Skills & Experience

• Active DV Clearance
• Sole UK National
• Senior-level experience supporting large and complex network environments
• Strong networking fundamentals and troubleshooting capability
• Juniper Technologies:

• EX, QFX switching
• SRX/vSRX Firewalls and policy configuration
• Junos Space, Security Director, Apstra
• Virtual Chassis and clustering
• EVPN/VXLAN

• Routing & Networking:

• OSPF, BGP
• GRE tunnels
• VRFs/routing instances
• WAN/LAN design, high availability

• Security & Platforms:

• FortiGate
• F5 BIG-IP (Load Balancing/WAF)
• Pulse Secure/Ivanti
• High-grade encryption

• Identity & Access Management:

• Cisco ISE (full life cycle)
• Windows NPS (RADIUS/802.1X)

• Monitoring & Core Services:

• SolarWinds, Splunk
• IPAM, DHCP, DNS

• Experience working within ITIL service management environments

We are seeking an experienced Senior Network Engineer to support and operate a large, complex, and highly secure network environment. The role is hands-on and operational, requiring strong troubleshooting skills, deep Juniper expertise, and experience working within structured IT service environments.