Windows Systems Administrator Location: Naples, Italy Clearance: Active TS/SCI Leidos is seeking a Windows Systems Administrator 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. This role is open to candidates across a range of experience levels. The scope of the position and corresponding compensation will be aligned with the selected candidate’s background and expertise. Due to the anticipated start date and program requirements, candidates must currently reside in Italy to be considered for this position. 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 4+ or 8+ years of relevant experience or a Master's degree with 2+ or 6+ years of relevant experience. Additional relevant experience may be considered in lieu of a degree. Active TS/SCI clearance in DISS and required program access. Active CompTIA Security+ certification. Active Windows Server operating system certification or the ability to obtain after hire. 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. NITESONI DABAOPP1 If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: November 4, 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. Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com. Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here. Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [email protected]. Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Windows Systems Administrator.

more at Leidos.

Business Development Manager - Government Services

Infrastructure Engineer

Cloud Engineer

similar roles.

Fabricator

Shipping Clerk

System & Network Engineer

Analytics Manager

Tower Crew Lead - Des Moines, Iowa

Senior Presales Systems Engineer - HPE Networking