**ManTech** is seeking a motivated, career and customer-oriented **System Administrator Level 3** , with the focus of Cisco Networks, to join our team in **Annapolis Junction, MD.** **Responsibilities** : **Include but are not limited to:** + Proficient on Windows 10 and Windows 11 + Must maintain and upgrade networks, including routers and switches. + Must have experience with sub netting, IP schemes, basic network troubleshooting and Webex remote. + Must have experience with PuTTy and Remote Desktop Protocol (RDP) + Must understand how to use the Trellix virus protection tool. + Must provide support and troubleshooting for PC and laptops. + Must set up and maintain conference room equipment. + Must be willing to perform labor work with equipment, printer and desk moves. + Proficiency with annual equipment refresh procedures. + Proficient with excessing obsolete computers and laptops **Minimum Qualifications:** + Fifteen (15) years experience as a SA in programs and contracts of similar scope, type and complexity is required. + Bachelor’s degree in a technical discipline from an accredited college or university is required. + Five (5) years of additional SA experience may be substituted for a bachelor’s degree. **Preferred Qualifications:** • Familiarity Office 365 Suite applications **Clearance Requirements:** + Must have a current/active TS/SCI w/ Polygraph. + Must be a US Citizen **Physical Requirements:** + The candidate must be able to move, carry and deliver workstations from inside the office to customer’s desk. The person in this position must be able to remain in a stationary position 50% of the time. Must communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.