Returning Candidate?

Voice Network Engineer

Voice Network Engineer

Requisition ID 
Job Locations 
Job Family 
Business Tech Analysis and Domain Management

Voice Network Engineer (Home based, UK)


We’re hiring!


Aon are currently recruiting a Voice Network Engineer (Homebased, UK) to join our team. The Voice Network Engineer will be primarily responsible for delivering and supporting business-critical Voice services to Aon employees, Call Centres, and Customers across EMEA. The Voice Engineer will provide Incident, Problem, Change and Release Management and also contribute to the planning, operational processes and implementation of customer Service Requests and Projects as well as Vendor related patches and upgrades.


About Aon


Headquartered in London, Aon Plc is a leading global professional services firm providing a broad range of risk, retirement and health solutions. Our 50,000 colleagues in 120 countries empower results for clients by using proprietary data and analytics to deliver insights that reduce volatility and improve performance.

Aon is an equal opportunities employer.  Aon's recruitment and selection policy ensures the best possible skill mix of colleagues and the highest quality candidates are appointed using objective job-related criteria.


About the Role


As a Voice Network Engineer (Homebased, UK) some of your key responsibilities will involve:

Administration, support, maintenance, and monitoring of a centralised core Avaya platform and local site based infrastructure

Deliver contracted services and solutions, provide consultative advice and support to internal Aon business units and other internal IT support teams

Management of Third-party vendors to deliver contracted support services, troubleshoot and resolve voice service and Carrier related incidents and Service requests

Technical leadership for all Voice Service related business and platform maintenance Projects as well as performing occasional after-hours standby and on-call responsibilities for major Project implementations

Coordinate and oversee the installation, moves, and modifications of Voice hardware and related equipment including Servers, Gateways, and ISDN/SIP Circuits

Management and fulfilment of Incidents, Problems and Service Requests in accordance with the Service Level Agreement

Follow IT Change control best practices for predictable results, attend Change Advisory Board (CAB) meetings and represent Vendor changes where applicable

Responsible for working in accordance with the Aon UK Limited Risk Management Framework, and compliance with the Aon UK Limited policies, including participation in the management of risks (including completion of mandatory training) that may adversely affect the business, interests or reputation of any Group Company.



About you       


As a Voice Network Engineer (home based, UK) your skills and qualifications will ideally include:


Experience managing DDI numbering and Dial Plans for a global organisation

Experience troubleshooting Voice applications, QOS, packet inspection, and utilisation of various tools for LAN and WAN networks

Operational knowledge, planning, implementing and supporting Cisco Unified Communication and Collaboration Suite (Call Manager, Unity Connection, Presence, Video calling and Expressway)

Ability to gather business requirements and create technical recommendations and solutions based on those requirements including associated diagrams and documentation

Knowledge and experience supporting Session Border Controllers within a centralised SIP trunking environment

Experience of working within a multi-vendor environment, within the context of a global environment

Knowledge of industry standards and government regulations relevant to voice communications / networking

Microsoft productivity suite advanced level (PowerPoint, Word, Excel, Visio, Project, and OneNote)

Collaboration Toolset competent level (Instant Messaging (Lync), Email (Outlook)



Essential administration and engineering experience to an expert or advanced level:

  • ACM 6.3 & 7.0 (Avaya Aura Communication Manager)
  • AAM (Avaya Aura Messaging)
  • ASA (Avaya Site Administration)
  • Avaya Aura Session & System Manager 6.3 & 7.0
  • Avaya CMS Supervisor (Call Management System)
  • Avaya One X Attendant (Switchboards)
  • Avaya One X Communicator (Softphone)
  • Avaya One X Agent (Contact Centre Softphone)
  • Verint i360 Portal/Enterprise Manager for Call Recording & Workforce Management
  • VOIP Networking technologies to an advanced level (OSI model, SIP, ISDN, H323)
  • ITIL processes to an advanced level (Incident, Problem & Change)


  • Desirable administration and engineering experience to a competent level:
  • Proteus Call accounting & recording (CTI solution)
  • Cisco Unified Communication and Collaboration Suite
  • Microsoft collaboration tools (Skype for Business, Lync)
  • Cisco Switching & Routing technologies (MPLS, BGP)

Connect With Us!

Not ready to apply? Join our Talent Community to stay informed about Aon opportunities.