Telephony Engineer - eDV ClearedLocation: London, on-site Salary: Competitive + Benefits (Can consider contractors as well)Clearance: Active eDV Clearance RequiredTo apply, email: Join a Major Secure Communications Transformation ProgrammeA 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 the design, configuration, deployment, testing, and optimisation of enterprise voice services.You''ll play a key role in ensuring continuity of service throughout complex migration activities, working closely with technical teams, suppliers, and operational stakeholders across multiple sites.The RoleAs a Telephony Engineer, you''ll support the delivery of secure telephony and unified communications solutions across a complex enterprise environment.Responsibilities include: Configuring, testing, and deploying telephony technologies including SIP, VoIP, SBCs, and cloud-based voice platforms Supporting migration activities such as number porting, handset deployments, endpoint onboarding, and legacy system decommissioning Troubleshooting telephony incidents, call routing issues, and integration problems Supporting the build and configuration of gateways, trunks, routing policies, and voice services Conducting site discovery activities, audits, ..... full job details .....