Network Manager

Hamilton Barnes ?; Gloucester; On-site; GBP 70,000 - 90,000; Full time

Benefits offered by this job

Annual on-call allowance

On-site work in Gloucester 2-3 days/wk

Security clearance eligibility

Job summary

Hamilton Barnes is seeking an experienced Network Manager to lead a six-person network and voice engineering team in a high‑stakes public-sector environment. The role requires staying technically credible while providing direction during complex incidents and projects.

You will manage data and voice engineering, security and cloud-connected infrastructure, and lead teams across Levels 3 and 4, with on-call responsibility and hands-on engagement.

Qualifications

• Senior-level networking background with broader exposure to data and voice networks.
• Proven ability to lead and develop a technical team while remaining technically credible.
• Experience handling incidents and escalations for enterprise environments.

Responsibilities

• Lead a six-person network and voice engineering team.
• Provide technical direction across data network, voice, security and cloud-connected infrastructure.
• Support and develop engineers across Levels 3 and 4.
• Handle senior escalation for complex infrastructure issues and incidents.
• Maintain operational resilience across critical services.
• Oversee infrastructure upgrades and technical projects.

Skills

Leadership

Incident management

Stakeholder management

Networking expertise

VoIP / Unified communications

Vendor management

Tools

CUCM

Check Point

SD-WAN

SASE

Cisco equipment

Job description

We are recruiting for an experienced Network Manager to lead a six-person network and voice engineering team within a large, business-critical public-sector environment.

This is not a purely managerial position.

The organisation is looking for someone who remains technically credible at a senior level, understands the infrastructure their engineers are supporting and can provide technical direction when complex incidents or projects require escalation.

You will have responsibility across the organisation's data networking, voice, security and cloud-connected infrastructure, while leading a team covering both network and voice engineering.

The Role

• Lead a team of six network and voice engineers
• Provide technical leadership across the network estate
• Manage both data and voice engineering functions
• Support and develop engineers across Levels 3 and 4
• Provide senior escalation for complex infrastructure issues
• Maintain operational resilience across critical services
• Oversee infrastructure upgrades and technical projects
• Work with internal teams, suppliers and technology partners
• Manage workload, priorities and engineering resources
• Maintain technical standards across the environment
• Participate in a 1-in-4 on-call rota
• Remain technically engaged rather than purely managerial

Technical Environment

The environment covers:

• LAN and WAN
• Routing and switching
• SD-WAN
• SASE
• Check Point
• Cisco Unified Communications Manager, CUCM
• Microsoft Teams telephony
• Voice and unified communications
• Cloud-connected infrastructure

A stronger data networking background is preferred, although candidates need enough understanding of voice technologies to effectively manage the complete team.

What We Are Looking For

• Strong enterprise networking background
• Previous network team leadership or management experience
• Excellent LAN and WAN knowledge
• Strong routing and switching fundamentals
• Good understanding of enterprise firewalls
• Experience across network security technologies
• Understanding of voice and unified communications
• Comfortable working across Cisco environments
• Technically capable of challenging and supporting senior engineers
• Experience managing incidents and technical escalations
• Strong stakeholder and supplier management
• Comfortable operating within a business-critical environment

You do not need to hold a long list of certifications. The hiring manager is far more interested in demonstrable technical knowledge, engineering credibility and the ability to lead experienced technical staff.

Package

• Approximately £4,000 annual on-call allowance
• 1-in-4 on-call rota
• 2 to 3 days per week in Gloucester

The position will require eligibility for security clearance. Existing SC clearance would be advantageous but is not essential.

This would suit a Senior Network Engineer, Network Team Lead, Technical Lead or Network Manager who wants to retain technical involvement while

taking ownership of a critical network and voice function.