Windows System Administrator

General information

Requisition #

R68677

Locations

USA-MD-Laurel

Posting Date

06/15/2026

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 and customer-oriented Windows System Administrator to join our team in Laurel, MD.

Responsibilities: Include but are not limited to:

• Design, deploy, and administer virtualized Windows platforms using VMware.
• Work with security teams to support systems security compliance (certification and accreditation).
• Automate account provisioning, disabling and archiving using PowerShell, Bash and Python scripting
• Conduct Nessus scanning and execute targeted remediation strategies to maintain system integrity
• Leverage Splunk to monitor host performance, identify reporting errors, and resolve configuration issues
• Support day-to-day operations, monitoring, and troubleshooting for client, server, and network devices
• Provide support for IT systems including day-to-day helpdesk operations, monitoring, and problem resolution for client, server, storage, and network devices
• Collaborate on evening patching cycles and provide reliable availability during core coverage hours (6AM-6PM)

Minimum Qualifications:

• Bachelor's degree and 12 years of relevant experience or an associate's degree and fifteen 15 years of relevant experience or 20 years with a high school diploma
• IAT I certification (DoD 8140 certification required, Acceptable certifications include A+ CE/CCNA-Security/CND/Network+ CE /CySA+/GICSP/GSEC/Security+ CE/CND/SSCP)
• Experience with providing comprehensive Windows support, from initial triage and diagnosis to advanced problem resolution
• Experience deploying virtual machines and managing configurations using Puppet and Ansible
• Managing and troubleshooting VMware environments

Preferred Qualifications:

• Experience with remote console monitoring and Intelligent Platform Management Interface (IPMI) protocols
• Experience with compiling software, resolving build errors, and managing dependencies within Git repositories
• Configure, query, and manage PostgreSQL and other SQL database systems to ensure optimal data flow
• Diagnose and resolve complex technical issues across all layers of the OSI model
• Monitor automated tasks and maintain scripting workflows utilizing GIT repositories
• Demonstrate proficiency in managing and troubleshooting Omnissa Horizon and VMware environments
• Basic understanding of integrating and utilizing Application Programming Interfaces (APIs)
• Experience with troubleshooting CISCO routers/switches/firewalls
• Create and monitor various automated tasks via scripting (Python, PowerShell) maintained in Git repositories.

Clearance Requirements:

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

Physical Requirements:

• The candidate should 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.

The projected compensation range for this position is $128,000.00-$214,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH's benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

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.