Senior Network Engineer - Spectrum IT Recruitment : Job Details

Senior Network Engineer - Portsmouth - Up to £55,000

If you're passionate about networks and have the expertise to deliver reliable, high-performance connectivity we have a perfect role for you.

Our client is seeking an experienced senior Network Engineer to join their team and support the design, deployment, and management of their full-fibre broadband network across the South of England.

The RoleBased in Portsmouth with travel to data centres and network sites as needed, you will:

• Configure and manage Layer 2 and 3 network elements (routers, switches, CGNAT, firewalls/VPNs, OLTs).
• Optimise traffic and manage peering and transit connections.
• Monitor and troubleshoot network performance, resolving issues effectively.
• Perform upgrades, security patching, and technology refreshes.
• Maintain network documentation and best practices.
• Collaborate with vendors and support teams.

Requirements

• 5+ years of network engineering experience in an ISP environment.
• Strong Juniper expertise (command line essential); certifications such as JNCIS-SP or JNCIS-ENT preferred.
• Deep knowledge of IPv4/IPv6, EVPN, MPLS, VXLAN, CGNAT, DHCP, DNS, and GPON networks.
• Experience with FTTH platforms, particularly OLTs.
• Strong troubleshooting and network performance skills.
• Valid UK driving licence and the right to work in the UK.

Benefits

• Competitive salary and annual bonus.
• 25 days of annual leave plus public holidays.
• Private medical cover, critical illness, and life assurance.
• Pension scheme.
• Opportunities to work with cutting-edge technologies in a collaborative team.

Are you ready to shape the future of broadband in the South of England?

To apply for this role please call , send your CV to or hit apply!

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.