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Telecommunications Engineer
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Telecommunications Engineer
Telephony Engineer – eDV Cleared
Location: London, on-site Salary: Competitive + Benefits Clearance: Active eDV Clearance Required
To apply: email Dominic.barbet@searchability.com
Representing a Major Secure Communications Transformation Programme
A specialist technology delivery organisation is seeking an experienced Telephony Engineer to support a large-scale communications transformation programme within a secure environment. This role will focus on the migration of legacy telephony platforms to modern unified communications solutions, supporting design, configuration, deployment, testing, and optimisation of enterprise voice services.
You’ll play a crucial role in ensuring continuity of service through complex migration activities, collaborating with technical teams, suppliers, and operational stakeholders across multiple sites.
The Role
As a Telephony Engineer, you’ll support the delivery of secure telephony and unified communications solutions across a complex enterprise environment.
Key Responsibilities
- Configuring, testing, and deploying telephony technologies such as SIP, VoIP, SBCs, and cloud-based voice platforms
- Assisting with migration activities including:
- Number porting
- Handset deployments
- Endpoint onboarding
- Legacy system decommissioning
- Troubleshooting telephony incidents, call routing issues, and integration problems
- Supporting the build and configuration of:
- Gateways
- Trunks
- Routing policies
- Voice services
- Conducting site discovery activities, audits, and migration planning exercises
- Supporting:
- Cutover planning
- Pilot deployments
- Phased migrations
- Transition activities
- Performing: functional testing, failover testing, and user acceptance support
- Validating:
- Voicemail integrations
- Hunt groups
- Call flows
- Contact centre functionality
- Producing:
- Technical documentation
- Configuration records
- Implementation guides
- Collaborating closely with:
- Suppliers
- Network teams
- Managed service providers
- Communicating effectively with stakeholders and end users throughout deployment activities
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Required Skills & Experience
- Proven experience as a Telephony Engineer, Voice Engineer, or Unified Communications Engineer
- Strong hands-on experience with VoIP, SIP, SBCs, and enterprise call routing
- Experience with cloud telephony platforms such as:
- Microsoft Teams Phone
- Zoom Phone
- Cisco Voice Systems
- Mitel
- Understanding of:
- PSTN replacement approaches
- Number management
- Porting processes
- Experience delivering telephony migrations or transformation programmes
- Strong troubleshooting skills, across telephony, network, and endpoint technologies
- Ability to produce high-quality technical and operational documentation
- Experience working within secure or highly regulated environments
- Strong communication and stakeholder engagement skills
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Desirable Experience
- Experience with contact centre or IVR configuration
- Familiarity with legacy PBX platforms and migration strategies
- Experience within large-scale multi-supplier delivery environments
- Understanding of ITIL, change management, and service transition processes
- Exposure to secure communications or mission-critical telephony environments
What’s On Offer
- Opportunity to work on a large-scale secure transformation programme
- High-impact technical delivery environment
- Collaborative experienced engineering teams
- Long-term programme work with modern communications technologies
- Competitive salary and benefits package
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