Voice & Unified Communications Engineer / Architect – freelance – hybrid, London, UK

The organisation operates a complex, fragmented voice environment comprising two separate legacy stacks — on‑premises Cisco CUCM (with differing soft client versions across the two banking entities), BT trading turret platforms, and disparate voice recording systems (Redbox and Variant). A planned migration to Cisco WebEx cloud was paused due to inadequate change management planning. This role will define and deliver a rationalised voice and UC target state, with particular focus on trading floor voice requirements.

Key Responsibilities

• Assess the current voice and UC estate across both banking entities: CUCM, Cisco Cubes, WebEx, trading turrets (BT platforms), voice recording (Redbox, Variant)
• Define a target‑state voice architecture aligned to the broader infrastructure transformation
• Develop a structured migration plan to Cisco WebEx (or alternative cloud UC platform), incorporating full change management, user communications, and phased rollout
• Ensure integration requirements are fully assessed prior to any migration: voice recording, turret integration, adjunct services, front office workflows
• Manage end‑user impact and change communications — particularly for trading floor users where voice is business‑critical
• Evaluate and rationalise voice recording platforms, ensuring regulatory compliance requirements are met
• Work with the network team to ensure QoS, connectivity, and resilience requirements are addressed in the network design

Technical Requirements

• Cisco Unified Communications Manager (CUCM): design, administration, and migration
• Cisco WebEx (cloud UC): deployment, migration from on‑premises, integration
• Cisco Cube (session border controller) configuration and dial plan design
• Trading turret platforms: BT ITS or equivalent — integration and interoperability
• Voice recording platforms: Redbox, Verint, NICE, or equivalent — regulatory compliance context
• SIP trunking, dial plan design, and PSTN gateway architecture
• QoS for voice and UC across LAN/WAN environments
• Understanding of MiFID II / FCA voice recording obligations in financial services

Advantageous

• CCNP Collaboration or equivalent
• Experience with soft client migration (Java‑based to WebEx or Teams)
• Knowledge of front office / trading floor communication requirements
• Microsoft Teams voice integration experience
• Soft skills
  • Strong project and change management discipline — able to design and execute structured migrations with appropriate user engagement
  • Ability to manage stakeholder expectations across trading floor, IT, and compliance audiences
  • Methodical and risk‑aware, with particular sensitivity to business‑critical voice systems

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