**ManTech** is seeking a motivated, mission-oriented **Systems Administrator** , in **Chantilly, VA** area, with strong technical capabilities and customer relationships. The Systems Administrator is responsible for providing a full range of Tier 1 IT support services & expertise to customer activities focusing on client and server environment services and virtual environment services. You will demonstrate knowledge and understanding of client and server operations and maintenance with Windows 10 and 11 environments and Windows Server 2016/2019, to include Active Directory, Domain Controllers, FTP, DNS, GPO’s, PKI, DHCP, VMWare, Backup Architectures, Storage Management, and Auditing. You will contribute with experience and working knowledge with ITIL IT Operations Management and IT Service Management, SharePoint, and Tier 1-4 support. **Responsibilities include, but not limited to:** + Windows user account creation, enable, disable, deletion, and archival + Windows file and folder permission & inheritance structure + Provide superior customer service; possess strong communication (verbal and written), interpersonal skills in a dynamic customer centric environment, and a self-starter + In-depth network and client systems troubleshooting + Perform maintenance, repair, upgrade, and full life cycle support of hardware/software interfacing with the enterprise + Research and order hardware/software to meet customer requirements + Document system configurations + Familiarity with virtualization and virtual environments + Familiarity with client system security to include scans, patching, audit log review, and system health checks + Familiarity with RAID, SAN, NAS, high availability, backup, and disaster recovery + Familiarity in setup/configuration of network devices, both copper and fiber + Familiarity with system monitoring tools: Tenable Security Center, ACAS, Splunk, SCCM, Trellix ePO, and HBSS, and ServiceNow, **Basic Qualifications:** + Bachelor’s Degree and 2 years or more years of relevant experience, or high school diploma/GED and 4 or more years of relevant experience + Security+ certification (active) + Occasional travel, 25% CONUS + Ability to use MS Office and PC **Preferred Qualifications:** + Previous NRO experience is highly desired + COMSEC experience desired **Physical Requirements:** + Must be able to be in a stationary position more than 50% of the time + Must be able to communicate, converse, and exchange information with peers and senior personnel + Constantly operates a computer and other office productivity machinery, such as a computer + Constantly positions self to maintain computers in the lab, including under the desks and in the server closet + Frequently moves Audio/Visual or Computer equipment weighing up to 50 pounds across and/or around a business campus or large facility **Security Clearance Requirements:** + Must possess an active TS/SCI with Polygraph ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.