Onsite TS/SCI Systems Administrator – Windows & Security

Leidos; Suitland (MD); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Systems Administrator to support Office of Naval Intelligence in Suitland, MD. The role requires TS/SCI and hands-on experience with Windows and macOS in a security-conscious environment.

You will manage Active Directory, SCCM, SQL Server, Group Policy, and STIGs while coordinating RMF activities and IT infrastructure support. Responsibilities include troubleshooting, upgrades, documentation, and collaboration with cross-functional teams to ensure secure, reliable systems.

Qualifications

• Active TS/SCI clearance in DISS and required program access.
• Bachelor's degree with 8+ years of experience or a Master’s degree with 6+ years of experience.
• Active DoD 8140 IAT Level II certification (e.g., CompTIA Security+ CE) or ability to obtain within 30 days of offer acceptance.
• 5+ years of Windows Systems Administration experience, including Windows 11 upgrades and extensive knowledge of Windows hardware, software, and networking components.

Responsibilities

• Troubleshoot and resolve technical issues involving Windows systems, hardware, software, and network components within established timelines.
• Support Windows 11 upgrades, system maintenance, software updates, and hardware replacements.
• Perform Active Directory administration, including account creation and troubleshooting.
• Support SCCM deployments, SQL Server troubleshooting, and Group Policy updates.
• Implement and maintain Security Technical Implementation Guide (STIG) configurations and updates.
• Track and document change requests and trouble tickets using ServiceNow or Remedy AR.
• Maintain configuration management records, asset lifecycle documentation, and SOPs.
• Prepare weekly reports documenting completed work and system activities.
• Support desktop system updates, security accreditation activities, and RMF activities.

Skills

Windows Systems Administration

Active Directory administration

SCCM deployments

SQL Server troubleshooting

Group Policy management

STIG implementation

Azure Cloud Administration

Education

Bachelor's degree

Master's degree

Tools

Active Directory

SCCM

SQL Server

Group Policy

Azure Cloud

Job description

Leidos is seeking a Systems Administrator to support Office of Naval Intelligence in Suitland, MD. The role requires TS/SCI and hands-on experience with Windows and macOS in a security-conscious environment.

You will manage Active Directory, SCCM, SQL Server, Group Policy, and STIGs while coordinating RMF activities and IT infrastructure support. Responsibilities include troubleshooting, upgrades, documentation, and collaboration with cross-functional teams to ensure secure, reliable systems.