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 will provide customer service representative support for Service Desk operations. This role requires an individual that is technical, customer-oriented and familiar with using desktop software applications such as web browsing and client software, as well as IT Service Management software such as JIRA, ServiceNow, or Remedy. The selected individual must be detail-oriented in order to capture customer inquiries appropriately.
Primary Responsibilities:
- Provides systems and software operations and maintenance support in a large network enterprise, multi-enclave environment.
- Rapidly distinguish isolated user problems from enterprise-wide application/system problems.
- Coordinate with customers and stakeholders to collect data, conduct analysis, develop, and implement solutions associated with incident tickets and requirements.
- Provide general systems administration mentoring and training to personnel.
- Develop and update operations and maintenance documentation for personnel
- Resolve highly complex problems using significant application of technical knowledge, conceptualizing, reasoning and interpretation.
- Work to convince others to accept area’s view/current practices and agree/accept new concepts, practices and approaches.
- Provide follow-up reports (technical findings, feedback, resolution steps taken) for root cause analysis, engineering technical assessment and process improvement initiatives.
- Remotely log into the end users' endpoint (desktops and/or servers with Windows or Linux OS) to perform technical software configuration, rebooting, and other remedial actions.
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
- Ability to communicate effectively with executive leadership (internally or client) regarding matters of significant importance to the organization/project.
- Strong understanding of technical principles, theories, concepts and their application across the program.
- Serves as a subject matter expert within technical domain area.
- Excellent oral and written communication skills
#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 15, 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 or more years of relevant experience, or a master’s degree with 6 or more years of relevant experience; additional experience may substitute for a degree.
- Active TS/SCI clearance with polygraph.
- Ability to communicate effectively with executive leadership regarding significant organizational or project matters.
- Strong understanding of technical principles, theories, concepts, and their application across the program.
- Subject matter expertise within a technical domain area.
- Excellent oral and written communication skills.
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.
