Featured
MANTECH

Voice Over Internet Protocol Technician

10 days ago by MANTECH
  • Salary negotiable
  • Annapolis Junction, MD, US
  • Full-time
Typical response: within 5 days Secure 1-click apply No spam — we never sell your data
AI summary

VOIP Technician/SME role supporting Cisco Unified Call Manager and POTS/e911 telephony services across a global government footprint. You’ll provide admin-to-deep technical support, troubleshoot multi-vendor VoIP/SIP systems (including SBC/CUBE), and help deliver end-to-end communications solutions onsite in Annapolis Junction. Standout perk: opportunity for CONUS/OCONUS travel (non-hostile areas).

Key skills
Cisco Unified Call Manager (CUCM)VoIP systems planning, design, installation and maintenanceSIP trunkingSession Border Controller (SBC) and/or Cisco CUBETCP/IP networking protocolsVoIP codecs and SDP (Session Description Protocol)Voicemail server administrationTroubleshooting multi-vendor hardware/software systemsIAT Level 2 certification (Security+ CE, SSCP, or CCNA)TS/SCI with Poly clearance
Salary not listed — comparable cleared VoIP Technician/Engineer roles in the Annapolis Junction, MD market often pay roughly $110k–$160k depending on clearance, Cisco certs, and scope.
You'll thrive here if you’re a hands-on VoIP SME who can support mission-critical CUCM/SIP/e911 services, communicate clearly with mixed audiences, and handle complex incidents in a cleared government environment.
Why apply
  • Support mission-critical e911 services
  • Global telephony footprint exposure
  • CONUS and OCONUS travel opportunities

MANTECH seeks a motivated, career and customer-oriented Voice Over Internet Protocol (VOIP) Technician to join our team in Annapolis Junction, MD. The VOIP SME is responsible for supporting Cisco Unified Call Managers for a global footprint in addition to POTS lines, both supporting e911 services in support of the Government customer.

Responsibilities include but are not limited to:

  • Provides broad telephony support from administrator level configurations to in-depth technical solutions for critical clients over nonsecure networks.
  • Works as the SME for engineers, surveyors, installers, and project managers to develop and execute end-to-end solutions for vendor products including Session Border Control and/or CUBE.
  • May manage multiple communication projects that provide critical response efforts resulting in streamline services for analog and digital.
  • Provides administration to voicemail servers, call managers, and emergency responders involving T1, fiber, Ethernet, multiplexing, copper wrap, and cellular servicing.
  • Configures and troubleshoots multi-vendor hardware and software systems.
  • Engages support for the escalation and communication of status to agency management and internal customers.
  • Support clients across multi-level service platforms, executing in-depth solutions to resolve real-time incidents and requests.
  • Provide support to TCP/IP network protocols that rely on TCP, Session Initiation Protocol, session description protocol, and VoIP codecs to provide reliable service. .
  • Monitor, tune, and support basic existing telephone systems and network infrastructure to ensure stable, reliable, secure, and efficient communications operations.
  • Support Identification, assessment, and development of detailed requirements such as supporting re-architecture of network segments in order to facilitate new requirements, technologies and growth.
  • Support lien mitigation efforts related to maintaining a compliant System Security Plan and associated network security and communicate effectively with a wide variety of technical and non-technical audiences, including customers, team partners, and other staff members.
  • Travel is required in support of service requirements -- 5-20%. This position also offers opportunities to support other bodies of work, at different locations, and to travel both CONUS and OCONUS (no hostile areas)

Minimum Qualifications:

  • 6 years of relevant experience
  • IAT Level 2 certification which may include Security+ CE, SSCP or CCNA
  • Understanding of high-level network routing and managing SIP trunking
  • Experience with VOIP systems to include the planning, design, installation, maintenance, management, and coordination of the deliverable
  • Understanding of IT equipment and service life as well as planning and implementation of equipment replacement
  • Experience creating presentations with the ability to convey technical and business concepts to various audiences
  • Ability to handle complex customer situations and interact with all levels of personnel to provide a quick and effective resolution

Preferred Qualifications:

  • Ability to support network devices such as servers, switches and routers
  • Advanced CISCO certifications
  • Experience with large scale enterprise IT contracts

Clearance Requirements:

  • Must have a current/active TS/SCI w/ Poly

Physical Requirements:

  • The person must be able to handle IT of a reasonable nature without assistance. Move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication, which may involve delivering presentations.
Reference: 22541_63748·Original posting
Related

You might also like

JobVibejobvibe

The AI-powered recruitment platform where ambition meets opportunity. JobVibe intelligently connects jobseekers and employers across the UK and US — with smarter matching, verified employers and fresh roles every day.

Follow us
© 2026 JobVibe — Connecting people. Powering careers.
made with in the UK

Made with Emergent