Leidos has a new and exciting opportunity for a Sr. Systems Administrator in our Intel Sector's (IS) Solutions Analysis Business Area (ASBA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!
Job Description
The Sr. Systems Administrator to support the design, development and deployment of products, tools and capabilities in support of a dynamic customer enterprise. This role performs System Administration tasks on a customer’s system that supports mission needs and coordination requirements. This individual will work in a team environment and coordinate with appropriate elements to effectively meet design, development, deployment, and monitoring/securing objectives.
Primary Responsibilities:
- Design, build, test and maintain scalable and stable technology solutions to meet mission needs
- Create documentation to include flowcharts, diagrams, manuals and any other required or requested deliverables.
- Use the Agile methodology to document requirements, configure, test, implement and support efficient solutions
- Perform automation tasks through scripting and testing
- Rotate between O&M to Dev Ops roles as required for Agile processes
- Evaluate alternatives including cost and risk, supportability and analyses for total systems; resolve highly complex multi-domain systems issues
- Operating and maintaining systems in Windows
Basic Qualifications:
- Bachelors degree with 8+ years of prior relevant experience or Masters with 6+ years of prior relevant experience. Additional years of experience may be substituted in lieu of a degree.
- Must have an active TS/SCI with a Polygraph, to be considered
- Experience with Windows 2012/2016
- Experience with Active Directory and DNS
- Experience with hardening Windows environments
- Demonstrated experience with Scripting/Automation
- Experience troubleshooting issues in a growing environment
- Experience with server patch management methodologies
- Familiarity working with Window’s PowerShell.
- Experience working with Jira and Confluence.
- Experience working in an Agile environment
- Experience establishing goals and plans that meet project objectives.
#CABARESTON
#ASBA
#HALO
#HALOincumbents
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:October 21, 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 with 8+ years of relevant experience, or master’s degree with 6+ years; additional experience may substitute for a degree
- Active TS/SCI clearance with polygraph
- Experience with Windows Server 2012/2016
- Experience with Active Directory and DNS
- Experience hardening Windows environments
- Demonstrated scripting and automation experience
- Experience troubleshooting issues in a growing environment
- Experience with server patch management methodologies
- Familiarity with Windows PowerShell
- Experience with Jira and Confluence
- Experience working in an Agile environment
- Experience establishing goals and plans that meet project objectives
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.
