Windows Systems Administrator

Socket.dev; Reston (VA); On-site; USD 73,450 - 132,775; Full time

Job summary

Leidos is seeking a Windows Systems Administrator III to support mission critical infrastructure for the U.S. Navy Fleet Command in Naples, Italy. You will administer and maintain Windows server environments, enterprise services, and secure operations to ensure high availability.

The ideal candidate will have extensive Microsoft tech experience, strong troubleshooting skills, and ability to support global operations with secure Windows environments. Travel to CONUS/OCONUS may be required.

Qualifications

• Bachelor's degree with 7+ years of relevant experience or Master's with 5+ years.
• Active TS/SCI clearance (DISS).
• Active Security+ certification and an active Windows Server certification.
• Extensive experience with AD, DNS, DHCP, Exchange, Azure Cloud, RD Services, VMware, and Windows Server services.
• Strong troubleshooting and communication skills.

Responsibilities

• Administer and manage Windows Server environments and Microsoft enterprise services.
• Monitor and troubleshoot servers, applications, and OS daily.
• Perform performance tuning and hardware upgrades for reliability.
• Troubleshoot and resolve complex Windows Server issues.
• Research, document, and recommend new system technologies and improvements.
• Review and implement IAVAs and IAVBs.
• Install, configure, secure, maintain, document, and administer SQL databases.
• Support global operations by maintaining secure Windows infrastructure.
• Travel may be required to support Navy commands CONUS/OCONUS.

Skills

Windows Server

Active Directory

Azure Cloud

VMware

DNS

DHCP

Exchange

Education

Bachelor's degree

Master's degree

Tools

Omnissa

Remote Desktop Services

Job description

Windows Systems Administrator

Location: Naples, Italy

Security Clearance: Active TS/SCI Required

Leidos is seeking a Windows Systems Administrator III to support mission critical infrastructure for the U.S. Navy Fleet Command in Naples, Italy. In this role, you will administer and maintain Windows server environments supporting enterprise infrastructure, standardized desktop services, and secure mission operations. The ideal candidate has extensive experience managing Microsoft technologies, troubleshooting complex systems, and maintaining secure, high availability Windows environments.

Primary Responsibilities

• Administer and manage advanced Windows Server environments and Microsoft enterprise services.
• Maintain daily system operations by monitoring, identifying, troubleshooting, and resolving issues affecting servers, applications, and operating systems.
• Perform performance tuning, hardware upgrades, and resource optimization to ensure reliable system performance.
• Troubleshoot and resolve complex Windows Server issues.
• Research, document, and recommend new system technologies and improvements.
• Review and implement Information Assurance Vulnerability Alerts (IAVAs) and Information Assurance Vulnerability Bulletins (IAVBs).
• Install, configure, secure, maintain, document, troubleshoot, and administer SQL databases to ensure optimal performance.
• Support global operations by maintaining secure, resilient Windows infrastructure environments.
• Travel may be required to support other U.S. Navy commands both within the continental United States (CONUS) and outside the continental United States (OCONUS).

Required Qualifications

• Bachelor's degree with 7+ years of relevant experience or a Master's degree with 5+ years of relevant experience. Additional relevant experience may be considered in lieu of a degree.
• Active TS/SCI clearance (in DISS).
• Active CompTIA Security+ certification and an active Windows Server operating system certification.
• Extensive experience administering enterprise Windows environments, including Active Directory (AD), Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), Microsoft Exchange email services, Microsoft Azure Cloud, Remote Desktop Services, VMware, Omnissa, desktop management, and Windows Server services.
• Experience performing advanced system troubleshooting.
• Strong interpersonal and communication skills.

Original Posting: July 26, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range: Pay Range $73,450.00 - $132,775.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.