​​Sr. Systems Administrator

Sorry, this job was removed at 06:20 p.m. (CST) on Monday, Jun 02, 2025
Be an Early Applicant
Fort Belvoir, VA
In-Office
90K-162K Annually
Information Technology • Software
The Role

Leidos is seeking a Sr. System Administrator in Fort Belvoir, VA to support large-scale migration and operations on a large, high-profile DOD contract. The I3TS program provides enterprise-wide IT support to enable DTRA’s Information Management & Technology Directorate (ITD) to consolidate, modernize, and continuously innovate the delivery of IT services and mission capabilities to DTRA’s internal and external mission partners operating in CONUS and OCONUS locations   

  

The Sr. System Admin will be responsible for overall installation, configuration, administration, support and maintenance of systems, including associated hardware. Duties will include management of systems infrastructures, implementing best practices to identify and recommend system functional specifications, configuration of physical and virtual systems, backup and recovery of IT infrastructure. Support duties will include updating and supporting systems by tuning performance, allocating storage space. Implementing critical patches, reviewing systems performance logs to identify anomalies and troubleshoot issues.  

   

Primary Responsibilities: 

  • Provide input on budget and resource assets.  

  • Assisting in hiring processes for multiple labor categories as requested  

  • Develop technical teams as necessary  

  • Coordinate with PMO and all Tier levels while also maintaining the ability to use knowledge of VMware Horizon View, vSphere, VDI to troubleshoot and resolve complex problems  

  • Be able to work in a rapid paced environment and must be able to work independently.  

  • Lead the onboarding and standup of new enclaves and compute environments.  

  • Interacts with users and evaluates vendor products.  

  • Makes recommendations to purchase hardware and software, coordinates installation and provides backup recovery.  

  • Develops and monitors policies and standards for allocation related to the use of computing resources.  

  • Creates, maintains, and implements detailed documentation and maintains standard operating procedures.  

  • Application of security settings and other commercial best practices such as DISA STIGS.  

  • Provides coaching and reviewing the work of lower-level technical staff.  

    

Basic Qualifications: 

  • BS degree and 8 – 12 years of overall related experience with a Windows/Linus server environment. Specific experience, education and training may be considered in lieu of degree.

  • Additional experience, education and training may be considered in lieu of degree  

  • Management and supervision of employees of various labor categories and skills in a complex, medium to large IT Infrastructure program, preferably for the US Government.  

  • Extensive experience working with virtual environments using VMware  

  • Shell scripting (e.g. bash) and experience in other languages like Perl, Python, and Java.  

  • Experience with application of security settings and other commercial best practices such as DISA STIGS.  

  • Experience with Intrusion Detection/Prevention Systems (such as FireEye and McAfee sensors and sandboxes)  

  • Experience with Security Incident Event Management (SIEM)   

  • Must possess an active DoD Secret with eligibility for a Top Secret at time of consideration.

  • Currently possess DoD 8750 certification at least IAT level II, e.g. Security+ce.  

  

Preferred Qualifications:  

  • Extensive experience working with virtual environments using VMware  

  • Shell scripting (e.g. bash) and experience in other languages like Perl, Python, and Java.  

  • Experience with application of security settings and other commercial best practices such as DISA STIGS.  

  • Experience with Intrusion Detection/Prevention Systems (such as FireEye and McAfee sensors and sandboxes)  

  • Experience with Security Incident Event Management (SIEM) including Splunk  

  • Must have at least an active Secret clearance with the ability to obtain a Top Secret  

  • Currently possess DoD 8750 certification at least IAT level II, e.g. Security+ce.  

  • ITIL certification

Original Posting:May 8, 2025

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 $89,700.00 - $162,150.00

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.

Similar Jobs

BAE Systems, Inc. Logo BAE Systems, Inc.

Systems Administrator

Aerospace • Hardware • Information Technology • Security • Software • Cybersecurity • Defense
Hybrid
Sterling, VA, USA
40000 Employees
133K-226K Annually

Amentum Logo Amentum

Systems Administrator

Security • Cybersecurity
In-Office
Arlington, VA, USA
18261 Employees
160K-190K Annually

Amentum Logo Amentum

Systems Administrator

Security • Cybersecurity
In-Office
Arlington, VA, USA
18261 Employees
160K-190K Annually

RTX Logo RTX

Systems Administrator

Aerospace • Industrial
In-Office
Arlington, VA, USA
27 Employees
76K-144K Annually
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
Alexandria, VA
27,104 Employees

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.

Similar Companies Hiring

Scotch Thumbnail
Software • Retail • Payments • Fintech • eCommerce • Artificial Intelligence • Analytics
US
25 Employees
Milestone Systems Thumbnail
Software • Security • Other • Big Data Analytics • Artificial Intelligence • Analytics
Lake Oswego, OR
1500 Employees
Fairly Even Thumbnail
Software • Sales • Robotics • Other • Hospitality • Hardware
New York, NY

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account