Description
Systems Administrator
Location: Mons, Belgium
This positing is for a potential upcoming opportunity.
The Defense Sector of Leidos has an upcoming opening for a Systems Administrator in Mons, Belgium. This role supports critical Army Military Intelligence Enterprise IT systems, ensuring secure, reliable, and uninterrupted operations across a global environment.
As part of a high-performing team, you will provide IT repair, maintenance, operations, logistics, and engineering services in support of mission-critical systems.
Primary Responsibilities:
Troubleshoot, diagnose, and resolve software and system issues across enterprise environments.
Support system design activities including testing, implementation, and optimization.
Maintain network security through implementation of STIGs and ongoing IAVA compliance.
Administer and support enterprise services including: Microsoft Windows Server 2019/ 2022, Active Directory including Group Policy management, MECM, WSUS, DHCP, DNS, Microsoft Exchange, Backup and data protection solutions, Client imaging, File and print services.
Perform activities supporting Information Assurance and Network Accreditation requirements.
Manage and maintain operating environments including:
Basic Qualifications:
Bachelor’s degree with 4+ years of relevant experience, or a Master’s degree with 2+ years of relevant experience. Additional relevant experience, training, or certifications may be considered in lieu of a degree.
Active DoD Top Secret clearance with the ability to obtain a TS/SCI prior to start date.
Active IAT Level II certification (Security+ CE or higher), or ability to obtain prior to start.
Computing Environment: Windows Server, Windows 11, or related system administration certificate/ certification, or the ability to obtain prior to start.
Experience administering SCCM/ MECM.
Experience working with Red Hat Enterprise Linux v8.10.
Experience administering Microsoft Exchange.
Experience administering VMware environments.
U.S. citizenship and a valid U.S. passport required to obtain SOFA status in Belgium.
Preferred Qualifications:
Current operating system certification in Linux or Windows.
Microsoft Certified: Windows Server Hybrid Administrator Associate or higher.
Experience with SharePoint 2016 or Subscription Edition.
Experience with SQL Server 2022.
Experience with Dell VxRail and Data Domain storage administration.
Experience with Apache Tomcat and PostgreSQL.
Experience supporting senior leaders or high-visibility customers in demanding environments.
AMSOPP1
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.
July 28, 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 $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.
About 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 $16.7 billion for the fiscal year ended January 3, 2025. 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 at www.leidos.com/careers/pay-benefits.
Securing Your Data
Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].
If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.
Commitment to Non-Discrimination
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.
