Phone Technician

General information Requisition # R67578 Locations USA-VA-Warrenton Posting Date 05/06/2026 Security Clearance Required TS/SCI w/ Poly Remote Type Onsite Time Type Full time Description & Requirements Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH! MANTECH seeks a motivated, career-oriented, and customer-focused Phone Technician to join our team in Warrenton, VA . In this role, you will provide frontline IT support and handle phone system installation and troubleshooting while collaborating closely with a dynamic, team-oriented environment. This role offers hands-on work with diverse technologies supporting critical operations. Responsibilities include, but are not limited to: Install, configure, and maintain VoIP and traditional phone systems, including handsets, headsets, peripherals, user extensions, voicemail, and call routing. Perform physical installation and setup of phone hardware, cabling, patch panels, and related telecommunications equipment, including work in network and telecom closets. Troubleshoot and resolve phone system hardware, software, and connectivity issues to ensure optimal performance. Coordinate with IT/network teams to integrate phone systems with data networks and support system upgrades. Document installations, configurations, and maintenance procedures, and provide user training on phone system features. Travel locally between customer buildings and support temporary assignments as required. Support coverage as part of a team operating between 6:00 AM and 5:00 PM. The required shift is Monday through Friday, 7:00 AM to 3:30 PM. Basic Qualifications HS Diploma and 11+ years of relevant experience OR Associates degree and 9+ years of experience OR Bachelor's degree and 7+ years of experience Hands-on experience with phone hardware installation, cabling, patch panels, and working in network/telecom closets and with VOIP/digital phones. Ability to troubleshoot and resolve phone system hardware, software, and connectivity issues. Basic knowledge of networking concepts (TCP/IP, VLANs) and integration between phone systems and data networks. Experience supporting Windows 10, Microsoft Office 2016 or later, and common business applications. Knowledge of Active Directory, TCP/IP networking concepts, and standard IT support tools. Preferred Qualifications Related work experience in IT hardware and cabling installation. Experience with implementation of Sponsor's network LAN infrastructure. Ability to work independently and manage multiple installation or service tasks simultaneously. Experience in technical help desk position and IT hardware/cabling installation. Experience with enterprise ticketing systems (ServiceNow ITSM/ITOM, Remedy, Jira Service Management).

Clearance Requirements:

Must have an active TS/SCI clearance with Polygraph. Physical Requirements Ability to remain stationary up to 25% of the time. Ability to move throughout buildings, access under desks, raised floors, and confined spaces. Ability to lift and move IT/AV equipment weighing 50+ pounds (team lifts or carts as needed). Must be able to ascend/descend ladders 10+ feet while pulling cables or adjusting equipment. Ability to operate computers, phones, and standard office equipment for extended periods. MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.