Voice Engineer

X4 Technology; London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A technology consulting firm is looking for a Voice Engineer to monitor and analyze performance metrics, troubleshoot call quality issues, and maintain voice services. Ideal candidates will have experience with Zoom Phone, Cisco CUCM, and ServiceNow. This role requires strong understanding of telephony protocols. Applications are due by August 2025, with a start date in September 2025.

Qualifications

• Monitor and analyze performance metrics across voice services.
• Use diagnostic tools for troubleshooting call quality.
• Configure and maintain voice services like IVRs and queues.

Responsibilities

• Monitor performance metrics across Zoom Phone and Cisco CUCM.
• Use SIP trace analysis to troubleshoot latency and call drops.
• Collaborate with IT for platform integrations.

Skills

Zoom Phone (admin portal and analytics)

CXOne (reporting, IVR scripting, and workforce optimization tools)

Cisco CUCM (configurations, call manager traces, and SIP trunking)

ServiceNow (ticketing, workflow automation, and asset management)

Understanding of telephony protocols (SIP, RTP, QoS)

Job description

Base pay range

Provided by X4 Technology. Your actual pay will be based on your skills and experience—talk with your recruiter to learn more.

Location: London Area, United Kingdom

Responsibilities

• Monitor and analyze performance metrics across Zoom Phone, CXOne, and Cisco CUCM to ensure voice quality and operational efficiency


• Use SIP trace analysis and diagnostic tools to troubleshoot call flow, latency, jitter, and dropped calls


• Configure and maintain voice services including call routing, IVRs, queues, and user provisioning


• Manage ticketing workflows in ServiceNow for incident tracking, resolution, and change management


• Collaborate with IT, network engineering, and customer support teams for platform integrations and escalations

Qualifications

Voice Engineer – Required Experience

• Zoom Phone (admin portal and analytics)


• CXOne (reporting, IVR scripting, and workforce optimization tools)


• Cisco CUCM (configurations, call manager traces, and SIP trunking)


• ServiceNow (ticketing, workflow automation, and asset management)


• Solid understanding of telephony protocols (SIP, RTP, QoS), and voice architecture in cloud and hybrid environments

Interviews

August 2025

Start date

September 2025

How to Apply

Apply to Gary Hargreaves at X4 Technology to learn more about the role or connect with me on LinkedIn to hear about regular job updates available with X4 Technology

Seniority level

• Mid-Senior level

Employment type

• Contract

Job function

• Information Technology

Industries

• IT Services and IT Consulting