ManTech seeks a motivated, career and customer-oriented **Systems Administrator** to join our team in **Chantilly, Virginia** . As a Systems Administrator on our team, you will support a high visibility program that offers challenging positions with significant impact on national security. **Responsibilities include but are not limited to:** + Install, configure, and maintain servers, networks, and computer systems + Manage software updates, handle security patches, and troubleshoot any technical issues that may arise. + Monitor and track system health. + Recognize unusual network activity, which may involve security-sensitive actions like illicit network access or data transfer. **Minimum Qualifications:** + Bachelor’s degree and 4+ years of experience in systems administration or High School Diploma and 8+ years of experience + Experience with Linux, Windows Server and Active Directory + Experience with Splunk or similar tool **Clearance Requirements:** + Must have a current/active TS/SCI w/Polygraph **Physical Requirements:** + The person in this position must be able to remain in a stationary position 50% of the time. 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.