UC Transformation Consultant

JR United Kingdom; London; Remote; GBP 60,000 - 90,000; Full time

Job summary

A leading consultancy firm in the UK seeks a Senior Unified Communications Consultant to drive the migration of Avaya telephony to Microsoft Teams Voice. The ideal candidate will lead client workshops, assess telephony architectures, and create detailed migration plans while ensuring compliance and delivering high-quality consulting reports.

Qualifications

• Proven experience in enterprise migration strategies from legacy PBX to Microsoft Teams Voice.
• Deep knowledge of Avaya systems and telephony infrastructure.
• Experience with compliance voice recording platforms.

Responsibilities

• Lead discovery workshops with client stakeholders.
• Map current architecture to Microsoft Teams architecture.
• Develop a staged migration strategy with timelines and costs.

Skills

Stakeholder engagement

Communication skills

Regulatory requirements knowledge

Cloud telephony adoption

Education

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

Avaya certifications (ACSS, ACIS)

Job description

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UC Transformation Consultant, West London

Client: Cpl

Location: West London, United Kingdom

Job Category: Other

EU work permit required: Yes

Job Views: 3

Posted: 26.06.2025

Expiry Date: 10.08.2025

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 full 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, covering current architecture, Teams deployment options, migration stages, risks, commercial considerations, and post-migration support strategies.

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 the target Microsoft Teams architecture using Direct Routing, Operator Connect, and Calling Plans.
• Evaluate the pros, cons, 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.
• Prepare a comprehensive report including:
• - Executive summary and transformation benefits
• - Recommendations
• - Migration stages with risks and architecture evolution
• - Integration details with call recording, compliance tools, and legacy services
• - Commercial model with ROI forecast
• - Appendices with diagrams, BOM, capacity planning, vendor comparisons, and artifacts

Qualifications and Skills:

• Proven experience in enterprise migration strategies from legacy PBX to Microsoft Teams Voice.
• Deep knowledge of Avaya systems (Aura, IP Office, CM) and telephony infrastructure.
• Expertise in Microsoft Teams Voice ecosystem: Operator Connect, Direct Routing, Calling Plans, Teams Phone System.
• Familiarity with regulatory requirements and integrations (PCI-DSS, MiFID II, call recording, CRM).
• Experience producing high-quality 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 (NICE, Verint, etc.).
• Familiarity with managed service transitions and frameworks (ITIL, TOGAF).
• Ability to produce comprehensive migration and transformation reports, diagrams, financial analyses, risk matrices, and executive summaries.