System Administrator

General information

Requisition #

R71820

Locations

USA-MD-Laurel

Posting Date

11/02/2026

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 System Administrator to join our team in Laurel, MD. You will be part of a dedicated team delivering enterprise infrastructure capabilities for a global workforce that supports a wide range of national defense missions. This role directly supports the Enterprise Infrastructure Services (EIS) organization-the foundation of all Enterprise Information Technology (EIT) for MPO.

Responsibilities include but are not limited to:

• Configure, administer, and maintain Windows Server operating systems, Active Directory (AD), and associated enterprise services.
• Administer VMware environments utilizing vCenter and ESXi, with a primary focus on user/account management, permissions, resource allocation, and baseline virtual machine (VM) troubleshooting.
• Provide support for implementation, troubleshooting, and day-to-day operations of IT systems, client/server hardware, storage, and network devices.
• Assist with basic Linux operating system troubleshooting and support where integrated with enterprise environments.
• Support dispatch systems, hardware diagnostics, and problem resolution across enterprise infrastructure.
• Monitor system health, optimize system operations, and participate in capacity analysis and performance tuning.
• Analyze and resolve Tier II/III problems associated with server hardware, operating systems, applications, and enterprise software integration.

Minimum Qualifications:

• Bachelor's degree in technical discipline from an accredited college or university.
• 20 years' experience as a System Engineer/System Administrator in programs and contracts of similar scope, type and complexity is required.
• Demonstrated experience in planning and leading Systems Engineering/Administration efforts is required.
• Proven hands-on experience in Windows Server administration, user account management, and group policy (GPO).
• Hands-on experience with VMware vCenter and ESXi
• Demonstrated experience with modern automation, configuration or monitoring tools such as Splunk, PowerShell or Ansible.
• IAT Level II certification (DoD 8140 required within 60 days of starting employment; acceptable certifications include Security+ CE, CCNA-Security, CySA+, GICSP, GSEC, CND, or SSCP).

Preferred Qualifications:

• Microsoft Certified: Windows Server Hybrid Administrator Associate or equivalent enterprise Windows certification.
• VMware Certified Technical Associate (VCTA) or VMware Certified Professional (VCP).
• Experience with enterprise storage platforms, particularly NetApp.
• Experience supporting cross-platform integration between Windows Active Directory and Red Hat Enterprise Linux (RHEL) systems.
• Scripting capability (e.g., PowerShell, Bash) for automating routine administrative tasks and account workflows.

Clearance Requirements:

• Must have a current/active Top Secret/SCI with Polygraph.

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and engage in virtual communication.

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.