UC Transformation Consultant

JR United Kingdom; Milton Keynes; Remote; GBP 70,000 - 95,000; Full time

Job summary

A leading company is seeking a Senior Unified Communications Consultant to oversee the migration from Avaya to Microsoft Teams Voice. The role involves conducting workshops, assessing existing telephony architecture, and preparing detailed consulting reports. Ideal candidates will possess extensive knowledge of telephony infrastructures and migration strategies.

Qualifications

• Proven experience in enterprise migration strategies from legacy PBX to Microsoft Teams.
• Deep knowledge of Avaya systems.
• Expertise in Microsoft Teams Voice ecosystem.

Responsibilities

• Lead discovery workshops with stakeholders across IT and telephony domains.
• Develop a staged migration strategy with timelines and costs.
• Create a comprehensive migration consulting report.

Skills

Stakeholder engagement

Communication

Whistle Compliance

Education

Microsoft 365 Certified: Teams Voice Engineer Expert (MS-720)

Avaya certifications (ACSS, ACIS)

Job description

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Job Views:

3

Posted:

26.06.2025

Expiry Date:

10.08.2025

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Job Description:

Senior Unified Communications Consultant – Microsoft Teams Voice & Avaya Migration

Location: Remote (UK-based preferred) with occasional customer site visits

Role Overview:

We are seeking a highly experienced Senior Unified Communications Consultant to lead and deliver a comprehensive discovery and transformation report for migrating an enterprise Avaya on-premise telephony environment to Microsoft Teams Voice. The successful candidate will produce a detailed consulting report similar in structure and depth to a network SASE transformation plan, including current architecture, Teams deployment options, migration stages, risk and commercial considerations, and post-migration support strategy.

Key Responsibilities:

• Lead discovery workshops with client stakeholders across IT, Network, Telephony, and Security domains.
• Assess the existing Avaya telephony architecture, including PBXs, call routing, SBCs, integrations, and trunking.
• Map current architecture to target Microsoft Teams architecture using Direct Routing, Operator Connect, and Calling Plans.
• Evaluate the advantages, disadvantages, and use cases for each Teams Voice deployment option.
• Identify dependencies, gaps, risks, and organizational readiness for cloud telephony adoption.
• Develop a staged migration strategy with timelines, costs, and technical steps.
• Create a comprehensive report including:
• - Executive summary and transformation benefits
• - Key recommendations
• - Migration stages with risks, costs, and architecture evolution
• - Integration details with call recording, compliance, and legacy services
• - Commercial model with ROI forecast
• - Appendices with diagrams, BOM, capacity planning, vendor comparisons, and artifacts

Qualifications:

• Proven experience in enterprise migration strategies from legacy PBX to Microsoft Teams Voice.
• Deep knowledge of Avaya systems and telephony infrastructure.
• Expertise in Microsoft Teams Voice ecosystem and deployment options.
• Familiarity with regulatory requirements and integrations.
• Experience producing high-standard customer-facing consulting artifacts.
• Excellent stakeholder engagement and communication skills.
• Microsoft 365 Certified: Teams Voice Engineer Expert (MS-720) or equivalent.
• Avaya certifications (ACSS, ACIS) or similar vendor credentials.
• Experience with compliance voice recording platforms.
• Knowledge of service transition frameworks like ITIL or TOGAF.