Global Unified Communications Lead: Teams, SIP & PBX

Smiths Group; England; On-site; GBP 90,000 - 130,000; Full time

Job summary

Smiths Detection is seeking a Unified Communications Manager to own and operate our global voice communications estate. You will lead day-to-day telephony administration, including Teams Phone, Direct Routing, SBCs, SIP trunks, and PBX platforms, ensuring high reliability and security.

You will collaborate with Network Engineering, Cybersecurity, and Service Delivery teams to align telephony services with business needs and drive cloud transformation initiatives across the globe.

Qualifications

• Significant experience supporting enterprise Unified Communications and telephony environments.
• Strong hands-on experience with Microsoft Teams Phone and Direct Routing.
• Experience administering SBC technologies such as Ribbon, AudioCodes, or equivalent.
• Proven experience managing SIP trunking, VoIP services, carrier platforms, and PBX systems.
• Experience designing and supporting complex call routing architectures and dial plans.
• Experience supporting or integrating contact centre technologies and customer communication platforms.
• Strong understanding of global telephony operations and carrier services.
• Experience managing technical relationships with telecommunications providers and managed service partners.
• Proven ability to troubleshoot voice quality, routing, and infrastructure issues.

Responsibilities

• Lead day-to-day administration and support of enterprise telephony services including Teams Phone, SBCs, PBX systems, voicemail platforms, and telephony gateways.
• Manage SIP trunking, POTS services, carrier connectivity, numbering plans, and global telephony provisioning.
• Administer and optimise Teams Phone services including Direct Routing, Call Queues, Auto Attendants, Teams Rooms, and Survivable Branch Appliances.
• Support telephony infrastructure upgrades, migrations, and cloud transformation initiatives.
• Design, configure, and support complex call routing solutions across global business operations.
• Manage dial plans, number management, routing policies, failover scenarios, and voice resilience strategies.
• Support integrations between enterprise telephony platforms and contact centre technologies.
• Work with stakeholders to ensure call flows, customer routing journeys, and operational requirements are met.
• Support and optimise contact centre solutions, including queue management and reporting.

Skills

Analytical thinking

Stakeholder management

Vendor management

Independent worker

Education

Degree in Information Systems, Telecommunications, Computer Science

Tools

Ribbon SBC

AudioCodes SBC

Job description

Smiths Detection is seeking a Unified Communications Manager to own and operate our global voice communications estate. You will lead day-to-day telephony administration, including Teams Phone, Direct Routing, SBCs, SIP trunks, and PBX platforms, ensuring high reliability and security.

You will collaborate with Network Engineering, Cybersecurity, and Service Delivery teams to align telephony services with business needs and drive cloud transformation initiatives across the globe.