Chantilly, Virginia, United States · On-site
$108k–$195k/yr
Leidos’ Corporate Information Security Office, within the Digital Sector, is seeking an experienced System Administrator to support multiple mission-focused programs and projects at the Liberty Center location in Chantil…
Skills: System Administration, Windows Server, Active Directory, DNS, Microsoft Exchange
Chantilly, Virginia, United States · Hybrid
Be Challenged and Make a Difference In a world of technology, people make the difference. We believe if we invest in great people, then great things will happen. At AnaVation, we provide unmatched value to our customers …
Skills: Cyber investigations, Cyber intelligence, Illicit network analysis, Financial crime investigations, Analytic expertise
Chantilly, Virginia, United States · On-site
$81k–$94k/yr
Type of Requisition: Pipeline Clearance Level Must Currently Possess: None Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Cyber and IT Risk Management Job…
Skills: Cybersecurity, Information assurance, Network security, Vulnerability review, Continuous monitoring
Chantilly, Virginia, United States · Hybrid
$99k–$225k/yr
Hardware Systems Administrator The Opportunity: Your combination of people skills and system administrator expertise makes you the team hero, solving one problem after another. What if you could use those skills to impro…
Skills: Linux administration, Kubernetes, Ansible, Terraform, Docker
Chantilly, Virginia, United States · Hybrid
$65k–$73k/yr
About Octave Federal Octave provides mission-critical software that empowers organizations to make informed decisions across every stage of the asset lifecycle - Design, Build, Operate and Protect - where performance, sa…
Skills: Office administration, Facility operations, Meeting coordination, Calendar management, Travel booking
Northrop Grumman Mission Systems, Inc.Chantilly, Virginia, United States · On-site
$133k–$200k/yr
RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: SCI TRAVEL: Yes, 25% of the TimeDescription At Northrop Grumman, our employees have incredible opportunities to …
Skills: Program Management, Earned Value Management, Systems Engineering, Contract Management, Risk Management
Chantilly, Virginia, United States · On-site
$120k–$203k/yr
The Aerospace Corporation is the trusted partner to the nation’s space programs, solving the hardest problems and providing unmatched technical expertise. As the operator of a federally funded research and development ce…
Skills: Cisco SDWAN, Cisco ACI, Network architecture, Firewall configuration, Network security
Chantilly, Virginia, United States · On-site
$128k–$173k/yr
Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Software En…
Skills: Java, Spring Boot, TypeScript, React, Redux
Chantilly, Virginia, United States · Hybrid
$62k–$141k/yr
Environmental Protection Specialist The Opportunity: Serve as a subject matter expert on environmental compliance issues affecting government facilities. Perform analysis on the drafting of policy statements, standard op…
Skills: Environmental compliance, NEPA analysis, Regulatory assistance, Environmental auditing, Policy drafting
Chantilly, Virginia, United States · Hybrid
$69k–$158k/yr
Land Mobile Radio Specialist The Opportunity: As a land mobile radio (LMR) specialist, you are well versed in the many facets used in modern public safety communication systems. In this role, you will use your expertise …
Skills: Land Mobile Radio, Public safety communication systems, Project 25, Technical support, Implementation support
Chantilly, Virginia, United States · On-site
$123k–$153k/yr
Title: Action Officer Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security com…
Skills: Action tracking, Calendar management, Executive communications, Project management, Systems engineering
Chantilly, Virginia, United States · On-site
$82k–$102k/yr
Title: Jr. Systems Engineer (Digital Engineering Course Development) Belong. Connect. Grow. with KBR! KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customer…
Skills: Systems engineering, Digital engineering, Model-based systems engineering, MBSE, SysML
Chantilly, Virginia, United States · On-site
$130k–$260k/yr
Software Engineer (Full Stack Development) Application Deadline: 16 September 2026 Department: Data Analysis and Technology Services Employment Type: Full Time Location: Chantilly, VA Compensation: $130,000 - $260,000 / …
Skills: Angular, Java, Spring Framework, TypeScript, HTML5
Marriott International Hotels, Inc.Chantilly, Virginia, United States · On-site
POSITION SUMMARY Patrol all areas of the property; assist guests with room access. Monitor Closed Circuit Televisions, perimeter alarm system, duress alarms, and fire life safety system. Lock property entrances when requ…
Skills: Loss prevention, Security monitoring, Emergency response, First aid, CPR
Chantilly, Virginia, United States · On-site
$143k–$215k/yr
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move f…
Skills: Embedded software engineering, Flight software, Multithreaded application design, Performance-oriented programming, Accelerator technologies
Chantilly, Virginia, United States · On-site
$143k–$215k/yr
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move f…
Skills: FPGA design, VHDL, Firmware development, RTL, Timing analysis
Chantilly, Virginia, United States · On-site
$100k–$200k/yr
Description Who we are: At Applied Network Solutions (ANS), we bring together some of the most curious minds in networking and cybersecurity. ANS was founded to disrupt the status quo. For over 25 years, our team provide…
Skills: Network engineering, Cybersecurity, System engineering, Cisco, Brocade
Chantilly, Virginia, United States · On-site
$134k–$201k/yr
ABOUT ROCKET LAB Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move f…
Skills: Avionics hardware design, FPGA, Microcontroller, ADC/DAC, VPX systems
Chantilly, Virginia, United States · On-site
$100k–$200k/yr
Description Who we are: At Applied Network Solutions (ANS), we bring together some of the most curious minds in networking and cybersecurity. ANS was founded to disrupt the status quo. For over 25 years, our team provide…
Skills: Cisco Network Services Orchestrator, Network Automation, Python, Linux, RHEL
Chantilly, Virginia, United States · On-site
$100k–$200k/yr
Description Who we are: At Applied Network Solutions (ANS), we bring together some of the most curious minds in networking and cybersecurity. ANS was founded to disrupt the status quo. For over 25 years, our team provide…
Skills: ServiceNow, System Engineering, Cybersecurity, Agile, Scrum
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The System Administrator will design, implement, and maintain Microsoft Windows Server and workstation environments while providing technical leadership for mission-focused programs. Responsibilities include managing network infrastructure, ensuring system security through patching and vulnerability remediation, and supporting enterprise applications like Active Directory and Exchange.
Candidates must hold an active Top Secret/SCI clearance and possess a bachelor's degree with 8–12 years of relevant IT experience. Proficiency in Windows Server administration, Active Directory, and DoD 8570 compliance is required for this role.
Leidos’ Corporate Information Security Office, within the Digital Sector, is seeking an experienced System Administrator to support multiple mission-focused programs and projects at the Liberty Center location in Chantilly, Virginia.
In this role, you will provide technical analysis, planning, engineering, design, implementation, and operational support for Microsoft Windows Server and workstation environments. This position will play an integral role in modernizing interconnected wide area networks, implementing evolving customer requirements, and integrating acquired or merged systems and assets.
You will serve as a technical expert for complex operating systems and enterprise applications. Responsibilities include evaluating system requirements, developing technical specifications, recommending system redesigns and configuration changes, resolving complex technical issues, and providing project leadership to maintain a high level of service for internal and external customers.
Location: All work will be performed on-site in Chantilly, VA.
Clearance: You must currently hold active Top Secret/SCI clearance and be eligible to obtain Polygraph.
Support multiple mission programs and projects located at the Chantilly facility.
Design, plan, implement, configure, administer, and maintain Microsoft Windows Server and workstation environments.
Configure and deploy Windows servers, Windows workstations, and client software within network domain environments.
Maintain and configure local area networks and provide support for interconnected WAN environments.
Serve as a technical subject-matter expert for complex operating systems, system applications, and enterprise infrastructure.
Evaluate system requirements and determine the technical feasibility of proposed solutions.
Develop system specifications, implementation plans, and technical recommendations.
Recommend redesign, configuration, and performance improvements for operating systems and applications.
Maintain the availability, reliability, security, and performance of supported systems.
Perform operating system patching, security configuration, and remediation activities to ensure Windows endpoints remain secure and current.
Review and remediate vulnerability findings in coordination with cybersecurity personnel.
Collaborate with the Information System Security Manager to maintain system compliance with applicable government security standards.
Support Active Directory, Domain Name System, Microsoft Exchange, and multifactor authentication services.
Administer environments containing multiple Active Directory forests.
Manage and maintain workstation, server, storage, and printer hardware.
Support enterprise backup, disaster recovery, and high-availability capabilities.
Support enterprise storage solutions, including NetApp or Dell EMC technologies.
Troubleshoot complex hardware, software, operating system, network, and application issues.
Integrate newly acquired or merged systems and assets into existing enterprise environments.
Document system configurations, technical procedures, risks, issues, and operational status.
Provide timely status updates to program leadership, customers, cybersecurity personnel, and other stakeholders.
Provide technical and project leadership for system administration initiatives.
Deliver responsive, professional support to internal and external customers.
Participate in technical training and hands-on learning to develop proficiency with new technologies.
Bachelor’s degree with 8–12 years of relevant information technology experience. Additional relevant experience, training, or certifications may be considered in lieu of a degree.
Must hold current and active Top Secret/Sensitive Compartmented Information clearance with willingness and ability to successfully complete and maintain a polygraph.
Current DoD 8570 IAM Level I and/or IAT Level II compliant certification, as required for the position.
System administration experience in Microsoft Windows desktop and server operating system environments.
Experience administering Windows 10, Windows 11, Windows Server 2016, and Windows Server 2019 +.
Experience with Windows Server administration and a demonstrated desire to develop deeper Windows engineering expertise.
Experience with Active Directory, DNS, and Microsoft Exchange Server.
Experience managing and maintaining workstation, server, and printer hardware.
Experience with enterprise patch-management solutions.
Experience patching systems and remediating vulnerability findings.
Ability to configure and support Windows systems in a network domain environment.
Strong troubleshooting, analytical, and problem-solving skills.
Strong written and verbal communication skills.
Effective technical documentation and presentation skills.
Strong customer-service and interpersonal skills.
Ability to work independently and collaboratively as part of a technical team.
Experience supporting multiple Active Directory forests.
Experience administering Microsoft Exchange environments.
Experience with enterprise storage technologies such as NetApp or Dell EMC.
Experience implementing or supporting multifactor authentication.
Experience managing backup, disaster recovery, and high-availability solutions.
Previous on-site support experience within a government IT environment.
Experience integrating acquired, merged, or newly introduced systems into an established enterprise environment.
Experience supporting classified systems or mission-critical government programs.
Experience providing technical leadership for infrastructure modernization projects.
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.
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.
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.
An industry & technology leader serving government & commercial customers with smarter, more efficient innovations
Leidos is an industry and technology leader serving government & 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 $17.2 billion for the fiscal year ended January 2, 2026. 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 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, visit careers.leidos.com for our latest opportunities.
Offices: 1750 Presidents St, Reston, Virginia 20190, US · 11955 Freedom Drive, Reston, VA 20190, US · 1145 N 2nd St, Leavenworth, KS 66048, US · 9600 Great Hills Trail, Austin, TX 78759, US · 221 3rd St, Newport, RI 02840, US
Based on 862 listings with disclosed salaries, most security & safety jobs in Chantilly, VA pay between $73k–$218k per year. Individual offers vary with seniority, company size, and specialization.
There are currently 1,151 open security & safety positions in Chantilly, VA listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include CACI International Inc, Booz Allen Hamilton, SAIC, VT Group (VTG), Leidos, among others. Browse the listings above to see every active employer.
Yes — 132 of the 1151 open security & safety positions offer remote or hybrid work (11 remote, 121 hybrid).
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.
