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Posted 20 July, 2026

Unified Communications Engineer

MANTECH
Chantilly, VA, US Full Time

Job Description

hackajob is collaborating with MANTECH to connect them with exceptional professionals for this role.

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MANTECH is seeking a motivated, career and customer-oriented Unified Communications Engineer to join our team in Chantilly, VA, to support a large
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Responsibilities include, but are not limited to:

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

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

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

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    Provides weekly report activities to manager

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    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.

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    Create and maintain appropriate documentation, including operational instructions

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

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Minimum Qualifications:

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    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.

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

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

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    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.

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

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

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Preferred Qualifications

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    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.

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

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    Experience with SolarWinds Voice/Video QoS product a plus

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

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

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Security Clearance Requirements

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

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Physical Requirements:

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    Sedentary work

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