Senior Security Jobs in Leesburg, VA
Leidos
$50050 - $90475 undefined
Springfield, VA
The Multi-Domain Solutions (MDS) division at Leidos is seeking a Senior Security & Life Safety Technician who is responsible for supporting the planning, monitoring, and maintenance of life safety and security systems across all organizational facilities. May 28, 2025For 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.
Leidos
$148850 - $269075 undefined
Reston, VA
The Decision Advantage Solutions (DAS) Business Area within the National Security Sector of Leidos is searching for a Senior Capture Manager to focus on high value capture opportunities (>$100M), responsible for securing existing and winning new business opportunities with DoD and Intelligence Community customers – NGA and NRO. June 27, 2025For 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.
Leidos
$126100 - $227950 undefined
Frederick County, MD
As a Senior Information Security Systems Engineer (ISSE) you will join a small team of security engineers providing Information Assurance (IA) Architecture Analysis and Security Engineering Support for the implementation and fielding of the National Leadership Command Capability in support of Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications. Bachelor of Science degree from an accredited university ideally in Computer Science, Information Assurance, Information Security System Engineering or related field with a minimum of 14 years of experience as an Information Systems Security Engineer (ISSE) or System Engineer on programs and/or contracts with the customer space.
Leidos
$126100 - $227950 undefined
Frederick County, MD
As a Senior Information Security Systems Engineer (ISSE) you will join a small team of security engineers providing Information Assurance (IA) Architecture Analysis and Security Engineering Support for the implementation and fielding of the National Leadership Command Capability in support of Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications. Bachelor of Science degree from an accredited university ideally in Computer Science, Information Assurance, Information Security System Engineering or related field with a minimum of 20 years of experience as an Information Systems Security Engineer (ISSE) or System Engineer on programs and/or contracts with the customer space.
ECLARO
$65 - $70 HOUR
Springfield, VA
This position will utilize multidiscipline knowledge of and experience in network infrastructure (enterprise grade and industrial grade firewalls, switches, and routers), virtual server infrastructure, cyber security tools and technologies, identity access management systems, OT software applications, operating systems, wireless communications (private radio, spread spectrum, LTE), and OT devices (PLCs, RTUs). Tests and deploys patches and software updates for all types of OT infrastructure including operating systems, network equipment, virtual infrastructure, and PLCs while ensuring no disruption of critical operations using a continuously evaluated risk-based methodology.
Creative Information Technology, Inc
Falls Church, VA
We serve both government and commercial sectors, offering a range of solutions such as Healthcare IT, Human Services, Identity Credentialing, Cloud Computing, and Big Data Analytics. With clients in the US and abroad, we hold key contract vehicles including GSA IT Schedule 70, NIH CIO-SP3, GSA Alliant, and DHS-Eagle II.
ALTA IT Services
Vienna, VA
Bachelor’s Degree, Information systems, Information Security, Computer Science, or related field of study. o Coordinate and prepare documentation, internal communications, and status updates.
DCS Corporation
Reston, VA
As a member of our team, you will support defense technologies along with research and development in Reston, VA, having opportunities to work in a dynamic environment, with state-of-the-art simulation technologies, simulation integration experts, and experienced military Subject Matter Experts (SME). Our work focuses on conducting capability assessments for emerging military technologies and ensuring related tools and methodologies are suitable to inform Department of Defense (DoD) decision makers.
George Mason University
Fairfax, VA
Responsible for providing security services on campus properties 24 hours a day, responsibilities of Security Officers include:Monitoring University owned or controlled buildings, areas, and property;Performing building lock-downs, unlocks, fire watches, and safety escorts;Ensuring academic offices, labs, and sensitive areas are kept secure;Observing and reporting suspicious activity, including writing incident reports when necessary; andReporting any problems regarding physical security-related issues, hazards, and unsafe conditions. Required Qualifications:U.S. citizen or legal resident;Successful completion of a background check;Possess a high-school diploma, GED, or equivalent;Possess a valid driver's license, with a good driving record preferred; must currently possess an appropriate, active, valid motor vehicle operator's license that meets all of GMU's requirements for operating state vehicles and equipment under Mason's Vehicle Use Policy 1411 https://universitypolicy.gmu.edu/policies/vehicle-use/.
Leidos
$104650 - $189175 undefined
Arlington, VA
The ideal candidate will possess superior analytical and problem-solving skills, operate independently with limited supervision and feedback, be a strong team player, and have the ability to establish solid working relationships with technical staff members and peers within the division as well as our external Government customers. 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.
Leidos
$72150 - $130425 undefined
Chantilly, VA
June 16, 2025For 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. · Must have the interpersonal skills to deal effectively with subcontractor management regarding subcontract issues of varying degrees of complexity and work issues to resolution.
Leidos
$148850 - $269075 undefined
Chantilly, VA
The Leidos National Security Sector (NSS) combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support our defense and intel customers' mission to defend against evolving threats around the world. The Multi-domain Solutions Division (MDS) within the Leidos National Security Sector is seeking a skilled Senior Cloud Engineer to join a new cyber security program and play a key role in supporting government-critical systems.
Leidos
$72150 - $130425 undefined
Chantilly, VA
Provide the oversight and evaluation of proposals; monitor contracts; be a critical asset in key negotiations; demonstrate ability to resolve multi-faceted and contractual/customer issues as they arise; identify risks and propose mitigation strategies; ensure compliance with Leidos policies and develop and maintain excellent customer relationships. Strong interpersonal skills with measured and articulate communication skills; ability to build and maintain strong relationships with internal and external customers; and proven ability to foster communication and reconcile internal issues or differences.
Leidos
$104650 - $189175 undefined
Herndon, VA
Additionally, this role will help automate and streamline operations and processes; as well as build and maintain tools for deployment, monitoring and operations, and troubleshoot and resolve issues in dev, test, and production environments. 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.
Leidos
$126100 - $227950 undefined
Herndon, VA
Partner with key stakeholders and technical experts to perform legacy environment discovery, assessing current network routing, configurations, and requirements to provide migration support for the Army global wide-area network. 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.
Mastercard
$114000 - $182000 undefined
Arlington, VA
All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must: Abide by Mastercard’s security policies and practices; Ensure the confidentiality and integrity of the information being accessed; Report any suspected information security violation or breach, and. Mastercard is looking for a Senior Specialist, Product Management to support the Vice President, Economic Intelligence and his leadership team to ensure efficient operations, drive strategic alignment, and enable program execution.
Leidos
$126100 - $227950 undefined
Lorton, VA
The Leidos National Security Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support our defense and intel customers' mission to defend against evolving threats around the world. Relevant certifications such as Certified Reverse Engineering Analyst (CREA), Offensive Security Certified Professional (OSCP), or similar certifications demonstrating expertise in reverse engineering and cybersecurity are highly desirable.
General Dynamics Information Technology
$136000 - $184000 undefined
Arlington, VA
To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. Facilitate coordination and collaboration across IAMD stakeholders including the Combatant Commands, Office of the Secretary of Defense, Joint Staff, military Services and Agencies, and intelligence community.