System Administrator

MANTECH; Laurel (MD); On-site; USD 110,000 - 150,000; Full time

Job summary

MANTECH in Laurel, MD seeks an experienced System Administrator to join our Enterprise Infrastructure Services team. You will help deliver enterprise infrastructure capabilities for a national defense mission, supporting Windows Server, VMware, AD, and cross-platform integration.

This role requires 20 years of systems engineering/administration experience, TS/SCI with Polygraph, and hands-on expertise with Windows Server, VMware, and automation tools such as PowerShell or Ansible.

Qualifications

• Bachelor’s degree in technical discipline from an accredited college or university.
• 20 years’ experience as a System Engineer/System Administrator in programs with similar scope and complexity.
• Experience planning and leading Systems Engineering/Administration efforts.
• Windows Server administration, user accounts management, and GPO experience.
• Hands-on VMware vCenter and ESXi experience.
• Automation tools experience with Splunk, PowerShell or Ansible.
• IAT Level II certification with DoD 8140 compliance within 60 days.

Responsibilities

• Configure, administer, and maintain Windows Server OS, AD, and enterprise services.
• Administer VMware environments using vCenter/ESXi, focusing on accounts and VM troubleshooting.
• Support IT systems operations, client/server hardware, storage and network devices.
• Assist with basic Linux troubleshooting within enterprise environments.
• Support dispatch systems, hardware diagnostics, and problem resolution.
• Monitor system health and performance; conduct capacity analysis and tuning.
• Resolve Tier II/III hardware, OS, and software integration issues.

Skills

Windows Server Administration

VMware vCenter/ESXi

GPO / Active Directory

PowerShell / Ansible

Linux troubleshooting

Automation / Monitoring (Splunk)

IAT Level II Certification

Education

Bachelor’s degree in technical discipline

Tools

Active Directory

VMware vCenter

ESXi

Splunk

PowerShell

Ansible

Bash

NetApp storage

Job description

MANTECH

Laurel, MD 20707

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.

Application Questions

Please select the highest level of security clearance you possess.