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Estimated Pay info$20 per hour
Hours Full-time
Location Chantilly, Virginia

About this job

MANTECH is seeking a motivated, career and customer-oriented Unified Communications Engineer to join our team in Chantilly, VA, to support a large
enterprise IT system.  

Responsibilities include, but are not limited to:

  • Resolving Unified Communications user incidents and requests, to include operational voice and video challenges

  • Resolve issues with vendor-specific multi-level video teleconferencing systems

  • Supports Moves/Adds/Changes according to the program Managed Services requirements.

  • Provides weekly report activities to manager

  • Supports the enterprise program with the installation of local and/or remote data and voice communications equipment to include but not limited to voice terminals, video conferencing units, concentrators, minicomputers, central processing units, and facsimiles.

  • Create and maintain appropriate documentation, including operational instructions

  • Work in a team with standardized solutions based on Cisco technology equipment.

Minimum Qualifications:

  • Bachelors Degree and at least 5 years of experience with information networks and related network security. Additional 2 years of experience may be substituted in lieu of degree.

  • Must meet DoD 8570 IAT II (e.g. Security+)

  • DoD 8570 computing environment certification within 6 months of hire.  Cisco CCNA Voice or equivalent certification.

  • Experience with Cisco VTC codes, Cisco VoIP endpoints, Cisco Unified Call Manager (CUCM) version 11.5 or later, Cisco Meeting Server, Cisco Telepresence Management Server or VQ Conference Manager.

  • In-depth understanding of standard voice and collaboration protocols, including SIP, H.323, MGCP, and SCCP.

  • Solid understanding of fundamental routing and switching concepts, including VLANs, STP, DHCP, and routing protocols like OSPF, BGP, and EIGRP to support voice infrastructure.

Preferred Qualifications

  • Hands-on knowledge of Cisco Expressway-C and Expressway-E equipment to facilitate secure Mobile and Remote Access (MRA) and business-to-business (B2B) collaboration.

  • Technical expertise in configuring Quality of Service (QoS) and Class of Service (CoS) to ensure optimal voice and video packet delivery across the network.

  • Experience with SolarWinds Voice/Video QoS product a plus

  • Experience in VMware ESXi and vSphere administration for hosting, configuring, and maintaining virtualized Cisco UC applications.

  • Active Cisco Certified Network Associate (CCNA) certification is highly preferred, demonstrating a strong grasp of foundational networking and collaboration principles.

Security Clearance Requirements

  • Must have a current / active Top Secret / SCI Clearance and be willing and able to obtain a polygraph.

Physical Requirements:

  • Sedentary work


Nearby locations

Posting ID: 1277050886 Posted: 2026-07-14 Job Title: Unified Communication Engineer