Senior Network Engineer

Salary: £65,000 - 75,000 per year

Requirements:

• Degree (or equivalent) in a computer-related subject
• Strong experience with Juniper Networks and firewalls, or the ability to transfer from Cisco to Juniper
• Knowledge of Windows 2003 and above, Exchange Server, LANs, WANs, virtualisation, TCP/IP, routing, SANs, network design, firewalls, Active Directory, encryption technologies, and system monitoring and management
• Proven and demonstrable experience supporting IT infrastructure, including networks and security hardware
• Deep experience with one major network equipment provider
• Evidence of implementing IT security tools and techniques
• Practical experience managing change
• Good working knowledge of Information Governance and its application within IT
• Commitment to customer-facing service
• Significant experience managing, motivating, and developing staff
• Understanding of core Internet protocols such as TCP/IP, UDP, DNS, SMTP, HTTP, and BGP

Responsibilities:

• Support all internal networks across UK sites and European offices, reporting to the Head of Networks
• Work with and provide cover for the Customer Networks and Product Development Manager
• Contribute to IT network project delivery, including design, build, and stakeholder communication
• Maintain and configure routers, switches, and related network equipment
• Deliver and support customer connections, including server sockets, VLANs, and similar services
• Assist with configuration of internal and external switches
• Provide technical support for service-network cabling, including planning and deploying cabinet cabling
• Support firmware and software updates for routers and switches
• Assist with EOL management and ensure timely planning and budgeting for replacements
• Support telephony systems, including ISDN and SIP services
• Assist in maintaining backups, redundancies, and disaster recovery processes for all network services
• Support network security through monitoring, audits, baselining, and working with internal and external assessors
• Support security and monitoring systems such as Systems Observer and FireEye
• Support assigned projects, including procurement meetings, budgeting, and security assessments
• Produce basic network designs
• Work across project and design activities as well as BAU support

Technologies:

• Active Directory
• Cisco
• Firmware
• Hardware
• HTTP
• Support
• Network
• Security
• TCP/IP
• Windows
• LAN

More:

We are a global organisation based in London, offering a Senior Network Engineer role with a salary of around £75,000 plus bonus, benefits, and on-call arrangements. The role is focused on supporting internal networks across UK and European sites, with a mix of project/design work and BAU support, and we are particularly interested in experience with Juniper Networks and firewalls.

last updated 39 week of 2026