UC Transformation Consultant

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

Job summary

A leading consulting firm in the UK is seeking a Senior Unified Communications Consultant to drive the migration from legacy Avaya systems to Microsoft Teams Voice. The ideal candidate will possess deep expertise in telephony systems, lead client workshops, and produce high-quality migration strategies and reports. This role offers flexibility with remote work and requires strong communication skills to engage stakeholders effectively.

Qualifications

• Proven experience in enterprise migration strategies from legacy PBX to Microsoft Teams Voice.
• Deep knowledge of Avaya systems and telephony infrastructure.
• Experience producing high-standard customer-facing consulting artifacts.

Responsibilities

• Lead discovery workshops with client stakeholders across IT, Network, Telephony, and Security domains.
• Develop a staged migration strategy with timelines, cost models, and technical steps.
• Build a detailed report including transformation benefits, risks, and architecture evolution.

Skills

Stakeholder engagement

Communication skills

Microsoft Teams Voice expertise

Avaya systems knowledge

Compliance voice recording experience

Education

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

Avaya certifications (ACSS, ACIS)

Job description

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UC Transformation Consultant, Colchester

Client: Cpl

Location: Colchester, 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 comprehensive consulting report, similar in structure and depth to a network SASE transformation plan, detailing 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 target Microsoft Teams architecture using Direct Routing, Operator Connect, and Microsoft Calling Plans.
• Document and evaluate the pros, cons, and use cases for each Teams Voice deployment option relevant to the customer.
• Identify dependencies, gaps, risks, and organisational readiness for cloud telephony adoption.
• Develop a staged migration strategy with timelines, cost models, and technical steps.
• Build a detailed report including:
• Executive summary and transformation benefits
• Key recommendations
• Migration stages with risks, costs, and architecture evolution
• Integration with call recording, compliance tools, and legacy services
• Commercial model with ROI forecast
• 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 and telephony infrastructure.
• Expertise in Microsoft Teams Voice ecosystem.
• Understanding of 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.
• Familiarity with service transition frameworks (ITIL, TOGAF).