Senior Network Engineer

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.

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.

Key Responsibilities

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

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