Senior IT Systems Administrator

General information

Requisition # R61813 Locations USA-VA-Chantilly Posting Date 07/21/2025 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 and customer-oriented Senior IT Systems Administrator to join our team in Chantilly, VA.

Responsibilities include but are not limited to:

• Providing end-user support to personnel utilizing ITD IT systems.

• Triaging help desk tickets for a broad range of service requests to include file transfers, assistance with desktops and peripheral equipment, account management, and other user-focused incidents.

• Installation, accountability, maintenance, and decommission of physical desktop, data center equipment and other IT assets.

• Performing general operations & maintenance for COTS/GOTS hardware and software.

Minimum Qualifications:

• Bachelor’s degree in Computer Science, Systems Engineering, or other IT-related discipline and 7+ years of relevant experience in Information Technology.

• In lieu of a Bachelor’s: Associates’ degree and 10 years of relevant experience in Information Technology.

• Appropriate ND 50-05/DoD 8570.01-M certification.

• Experience with Windows and Linux operating systems.

• Experience providing help-desk end-user support for common desktop and server issues.

• Experience installing and configuring physical equipment.

• Ability to provide technical support in the management of networks, software, hardware, configurations and architectures.

• Experience and ability to perform software installations and upgrades to operating systems and layered software packages.

• Experience with Intelligence Community Directive (ICD) 503 and system Assessment and Authorization (A&A) procedures/processes.

Clearance Requirements:

• Must have a current/active TS/SCI w/Polygraph.

Physical Requirements:

• Must be able to remain in a stationary position 50%

• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.

• Must be able to exchange accurate information in these situations.

MANTECH International Corporation considers all qualified applicants for employment without regard to disability