Seeking a career with a sense of purpose, work life balance, and growth opportunities? There’s a place for you at Leidos!
We are currently seeking a Windows Systems Administrator to join the Compartmented Enterprise Services Office (CESO) effort. This program is establishing a modern secure web service (SWS) operation as part of a state-of-the-art, highly automated platform capable of supporting a rapidly expanding customer population. Apply today to become part of the Leidos team that is assisting CESO as they migrate to a high security cloud environment by providing network and communication services, monitoring services, and system administration.
This position is based in Arlington, VA and is 100% on-site. 2nd Shift hours are Monday-Friday, 12pm-8pm.
Primary Responsibilities
Create, maintain, and implement detailed documentation for standard systems operating procedures to be used across the enterprise.
Develop, implement, and monitor policies and standards for allocation related to the use of computing resources.
Analyze available hardware and software from outside vendors and make recommendation for purchase and installation of cost-effective solutions.
Review work performed by lower-level technical staff.
Work both independently as well as in coordination with network
administrators to maintain the smooth operation of a multi-user computer system.
Basic Qualifications
Bachelor's degree and 4+ years of overall related experience with a Windows servers environment (e.g. 2008r2 and 2012r2). Additional experience, education and training may be considered in lieu of degree.
An active TS/SCI security clearance is required for this position.
Currently possess DoD 8750 certification at least IAT level II, e.g Security+ce.
Candidate may be asked to obtain CI Poly in future
Experience with configuration, troubleshooting and maintaining VMware environments.
Experience with Remote Desktop Services
Experience with PowerShell scripting and experience in other languages like Python.
Experience with application of security settings and other commercial best practices such as DISA STIGS.
Experience with Security Content Automation Protocol (SCAP)
Experience with Group Policy Management (GPO) and applying Local Security Policies
Experience with Windows Task Scheduler
Experience Managing Active Directory
Experience with System (hardware) and application (software) installation and configuration.
Application of security settings and other commercial best practices such as DISA STIGS.
Preferred Qualifications
Prior experienced with DISA and DISA’s support to mission partners
TS/SCI w/CI Poly Preferred
Integration of Network Management (NM) and Element Management (EM) systems with network performance, trouble ticketing, and security subsystems highly desired.
Experience with support systems to include enclave Ethernet switches, storage area networks (SAN), and network attached storage (NAS).
Candidates with a thorough knowledge of networking principles to included TCP/IP a plus.
Experience with a ticketing system such as BMC Remedy.
ITIL v3 Foundation certified
Linux OS experience.
Solaris OS experience.
Experience working with virtual environments.
Why Leidos?
At Leidos, we are dedicated to making the world safer, healthier, and more efficient through technology, engineering, and science. You would be a valued member of global team providing services across civil, defense, health and intelligence business lines. At Leidos, team member career development, flexibility, and well-being are priority and is supported by consistent leadership engagement, an experienced human relations staff, and numerous employee development and enrichment programs. Use your unique talents and make an immediate impact! Apply today!
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:July 17, 2026For 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.
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.
Skills Required
- Bachelor's degree (or equivalent experience) and 4+ years related Windows server experience
- Active Top Secret/SCI (TS/SCI) security clearance
- DoD 8570/8750 IAT Level II certification (e.g., Security+ce)
- Experience configuring, troubleshooting, and maintaining VMware environments
- Experience with Remote Desktop Services (RDS)
- PowerShell scripting experience (experience with Python also mentioned)
- Experience applying security settings and best practices such as DISA STIGs
- Experience with Security Content Automation Protocol (SCAP)
- Experience with Group Policy Management (GPO) and Local Security Policies
- Experience with Windows Task Scheduler
- Experience managing Active Directory
- Experience with system (hardware) and application (software) installation and configuration
- Candidate may be asked to obtain CI Poly in the future
- Prior experience with DISA and DISA mission partner support
- TS/SCI with CI Poly preferred
- Integration experience of Network Management (NM) and Element Management (EM) systems
- Experience with enclave Ethernet switches, SAN, and NAS
- Strong knowledge of networking principles including TCP/IP
- Experience with ticketing systems such as BMC Remedy
- ITIL v3 Foundation certification
- Linux OS experience
- Solaris OS experience
- Experience working with virtual environments
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
