Voice Specialist

Job Title: Senior Voice Systems Engineer

Location: Leicester, UK (Hybrid – candidates must be within a commutable distance)

Employment Type: Permanent

Start Date: ASAP

Overview

We are seeking an experienced Senior Voice Systems Engineer to lead the transformation of our enterprise voice infrastructure, driving the migration from legacy telephony platforms to modern cloud-based communication solutions, including Microsoft Teams Telephony and Cisco Webex.

This role requires a highly capable technical specialist who can quickly assess the existing environment, provide strategic guidance, and act as a trusted advisor to internal stakeholders and technology partners. The successful candidate will play a key role in both the ongoing support of the current voice estate and the delivery of future-state communication services.

Key Responsibilities

• Lead the migration of enterprise telephony services from legacy platforms to Microsoft Teams Voice and Cisco Webex solutions.
• Design, implement, support, and optimise enterprise voice and unified communications environments.
• Provide technical leadership and consultancy across voice transformation initiatives.
• Collaborate with vendors, including Microsoft and Cisco, to ensure successful solution delivery and service optimisation.
• Support and modernise existing voice infrastructure while ensuring service continuity.
• Act as a trusted technical advisor to stakeholders across the organisation.

Required Skills & Experience

• Degree in a technical discipline or equivalent industry experience.
• Extensive experience within large-scale enterprise IT environments, with a strong background in systems design, implementation, and administration.
• Proven hands-on expertise with Microsoft Teams Telephony, including:
• Direct Routing
• Calling Plans
• Microsoft 365 Voice Integration
• Experience configuring and supporting Cisco Webex Contact Centre or comparable cloud contact centre platforms.
• Strong knowledge of Session Border Controllers (SBCs), including technologies such as:
• Cisco CUBE
• AudioCodes
• Equivalent SBC platforms
• Solid understanding of VoIP technologies and protocols, including:
• SIP
• RTP / SRTP
• DTMF
• Dial Plan Design
• Experience with PSTN connectivity, number porting, and telephony regulatory requirements.
• Understanding of voice security best practices, including:
• SBC hardening
• Toll fraud prevention
• Encryption and secure communications

Personal Attributes

• Excellent communication and stakeholder management skills.
• Ability to rapidly understand complex environments and provide clear technical direction.
• Strong consultative approach with the confidence to engage with senior stakeholders, vendors, and technical teams.
• Self-driven, proactive, and capable of operating independently within a complex enterprise environment.