Network Engineer (Voice)

Hamilton Barnes; Greater London, Gloucester; On-site; GBP 35,000 - 47,000; Full time

Job summary

Hamilton Barnes is recruiting an experienced Network Voice Engineer in Gloucester to support enterprise voice services across the voice and wider network estate. The role is permanent with hybrid working (2–3 days on site) and a salary from £35,000 to £47,000 plus a £4,000 on-call allowance.

You will work on Cisco UC/Call Manager, Cisco UCCE, and Microsoft Teams telephony, troubleshoot complex issues, and collaborate with the technical teams. Security clearance is required for this position.

Qualifications

• Level 3 Network Voice Engineer with enterprise voice experience.
• Experience with Cisco UC/Call Manager, Cisco UCCE, and Teams telephony.
• Able to explain voice environments and personal contributions to complex issues.
• LAN, data networking or firewalls experience beneficial.
• Security clearance required.
• Strong collaboration in a technical team.

Responsibilities

• Support, troubleshoot, and improve critical voice services.
• Work across enterprise voice infrastructure and wider networking environments.
• Contribute to operation and support of Cisco UC/Call Manager, Cisco UCCE, and Teams telephony.
• Investigate and resolve complex voice-related issues.
• Collaborate with colleagues across the technical environment.

Skills

Voice engineering

Enterprise voice knowledge

Team collaboration

Communication skills

Tools

Cisco UC/Call Manager

Cisco UCCE

Microsoft Teams Telephony

LAN Networking

Firewalls

Job description

Salary: £35,000 - 47,000 per year

Requirements

• We need an experienced Level 3 Network Voice Engineer with strong, demonstrable voice engineering expertise.
• We need experience supporting enterprise voice technologies such as Cisco Unified Communications Manager/Call Manager, Cisco UCCE, and Microsoft Teams telephony.
• We need someone who can clearly explain the voice environments they have supported, the technologies involved, and their personal contribution to resolving complex issues.
• Experience with LAN, data networking, or firewalls would be beneficial.
• You must be security clearable.
• We are looking for someone who is technically strong and comfortable working in a collaborative environment.

Responsibilities

• Support, troubleshoot, and improve critical voice services.
• Work across enterprise voice infrastructure and wider networking environments.
• Contribute to the operation and support of technologies including Cisco Unified Communications Manager/Call Manager, Cisco UCCE, and Microsoft Teams telephony.
• Investigate and resolve complex voice-related issues.
• Collaborate with colleagues across the technical environment.

Technologies

• Cisco
• Support
• LAN
• Network
• Security

More

We are recruiting for an experienced Network Voice Engineer to join a well-established technical environment in Gloucester. This is a permanent Level 3 role focused primarily on enterprise voice technologies, with some involvement across the wider network estate. The role offers a salary of up to £45,000 plus an approximate £4,000 annual on-call allowance, with a 1-in-4 on-call rota and hybrid working of 2 to 3 days per week in Gloucester.

last updated 31 week of 2026