Senior Cisco Unified Communications Engineer

CBSbutler Holdings Limited trading as CBSbutler; Newport; On-site; GBP 81,000 - 109,000; Full time

Job summary

CBSbutler Holdings Limited trading as CBSbutler in Newport seeks a Senior Cisco Unified Communications Engineer to support and maintain critical telephony and video conferencing infrastructure within a major defence environment.

You will own complex technical issues, support enterprise collaboration platforms, and ensure reliability and performance of communications services with strong CUCM, Unity Connection, Jabber, and Webex experience. SC clearance is required.

Qualifications

• Hands-on experience across Cisco Unified Communications (CUCM, Unity Connection, Jabber, IP telephony).
• Experience with Cisco Webex and video conferencing infrastructure.
• Experience with SIP and H.323 protocols.
• L2/L3 troubleshooting in enterprise environments.

Responsibilities

• Troubleshooting and resolving Level 2/3 incidents across Cisco telephony and video conferencing infrastructure.
• Supporting and maintaining Cisco Unified Communications environments (CUCM, Unity Connection, Jabber, IP Phones).
• Managing Cisco Webex and video conferencing tech (TMS, Pexip).
• Investigating SIP/H.323 connectivity and configuration issues.
• Supporting hardware/software requests and ongoing technical projects.
• Maintaining technical documentation and knowledge bases.
• Providing technical guidance to wider operations teams.

Skills

L2/L3 troubleshooting

SIP & H.323

Cisco CUCM

Cisco Unity Connection

Jabber

IP Telephony

Cisco Webex

Tools

VMware vSphere

vSAN

Kurmi

Telsica

PeterConnects

Job description

Job title: Senior Cisco Unified Communications Engineer

Rate: £515 per day inside IR35

Contract: 4-month rolling

Location: Newport

Active SC clearance is required for this role

We're looking for a technically strong Cisco Unified Communications Engineer to support and maintain critical telephony and video conferencing infrastructure within a major defence environment.

This is a hands‑on engineering role where you'll take ownership of complex technical issues, support enterprise collaboration platforms and help ensure the continued reliability and performance of essential communications services.

Responsibilities:

• Troubleshooting and resolving complex Level 2 and Level 3 incidents across Cisco telephony and video conferencing infrastructure.
• Supporting and maintaining Cisco Unified Communications environments, including CUCM, Unity Connection, Jabber and Cisco IP Phones.
• Managing and supporting Cisco Webex and video conferencing technologies, including TMS and Pexip.
• Investigating and resolving SIP and H.323 connectivity and configuration issues.
• Supporting hardware and software requests, infrastructure changes and ongoing technical projects.
• Maintaining technical documentation, operational procedures and knowledge bases.
• Providing technical guidance and knowledge transfer to wider operations teams.

Expereince Required:

You'll bring strong hands‑on experience across Cisco Unified Communications, particularly:

• Cisco CUCM, Unity Connection, Jabber and IP telephony.
• Cisco Webex and video conferencing infrastructure.
• Cisco voice gateways and associated telephony infrastructure.
• SIP and H.323 protocols.
• L2/L3 troubleshooting within enterprise environments.

Desirable experience:

• VMware vSphere and vSAN.
• Kurmi, Telsica and PeterConnects.
• WAN/LAN networking and network security.
• Windows environments and general systems administration.