General informationRequisition # R67599
Locations USA-MD-Annapolis Junction
Posting Date 05/06/2026
Security Clearance Required TS/SCI w/ Poly
Remote Type Onsite
Time Type Full time
Description & RequirementsMANTECH 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 secure and nonsecure networks.
- Works as the SME for engineers, surveyors, installers, and project managers to develop and execute end-to-end solutions for various vendor products.
- May manage multiple communication projects that provide critical response efforts resulting in streamline services for analog, digital, and video requirements.
- 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 to enable users to perform complex defense operations.
- 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 ~10-20%. This position also offers opportunities to support other bodies of work, at different locations, and to travel both CONUS and OCONUS (no hostile areas) for AVMM support.
Minimum Qualifications:- Bachelor's degree and 6 years of relevant experience or 4 years of experience may be substituted for education
- Experience with service management knowledge
- Experience with support integration of VOIP systems to include the planning, design, installation, maintenance, management, and coordination of the deliverable
- IATT Level 2 certification, such as Security+ CE
- Understanding of IT equipment and service life as well as planning and implementation of equipment replacement
- Experience with 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:- Experience with customer ticketing systems ServiceNow
- Support to network devices (including servers) in support of AVMM/IPTV/Streaming services
- IATT Level 2 certification, such as Security+ CE
- PMP Certification, and ITIL Foundations V3 certification desired
- 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.
The projected compensation range for this position is $85,000.00-$141,600.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.
