Current jobs related to Information System Security Office - Chantilly, Virginia - Leidos

  • Information System Security Office

    2 days ago

    Chantilly, Virginia, United States Jobs via Dice Full time

    Who We Are:Kudu Dynamics is a Leidos owned company, forged out of a decade of experience in computer network operations and staffed with talent who have built, overseen, and enhanced capabilities throughout the entire USG arsenal. Our team of hackers, engineers, makers, and shakers have experience spanning centuries of research, development, and...

  • Information Systems Security Engineer

    3 weeks ago

    Chantilly, Virginia, United States General Dynamics Information Technology Full time

    Clearance LevelTop Secret SCI + PolygraphCategoryCyber and IT Risk ManagementLocationsChantilly, VirginiaMcLean, VirginiaWarrenton, Virginia(Onsite Workplace)Key Skills For SuccessComputer SecurityInformation AssuranceOpen-SourceOperating Systems (OS)SHAREREQ#: RQ212153Public Trust: NoneRequisition Type: RegularYour ImpactOwn your opportunity to serve as a...

  • Information Systems Security Officer

    3 weeks ago

    Chantilly, Virginia, United States Modern Technology Solutions Inc Full time

    Essential Job FunctionsSecurity Policy Implementation: Develop, implement, and enforce security policies, standards, and procedures to ensure the protection of information systems.Configuration Management: Ensure that all information systems are configured securely according to organizational policies and best practices.System Patching: Perform system...

  • Information Systems Security Engineer

    2 days ago

    Chantilly, Virginia, United States General Dynamics Information Technology Full time $161,500 - $218,500

    Type of Requisition:RegularClearance Level Must Currently Possess:Top Secret SCI + PolygraphClearance Level Must Be Able to Obtain:Top Secret SCI + PolygraphPublic Trust/Other Required:NoneJob Family:Cyber and IT Risk ManagementJob Qualifications:Skills:Computer Security, Information Assurance, Open-Source, Operating Systems...

  • Senior Information System Security Officer

    3 weeks ago

    Chantilly, Virginia, United States Northrop Grumman Full time

    RELOCATION ASSISTANCE: Relocation assistance may be availableCLEARANCE TYPE: Top SecretTRAVEL: Yes, 10% of the TimeDescriptionAt Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be...

  • Information Systems Security Engineer

    2 days ago

    Chantilly, Virginia, United States VTG Defense Full time

    Overview:TUNUVA Technologies (a wholly owned subsidiary of VTG) seeks to hire an Information Systems Security Engineer to conduct information systems security engineering activities throughout the acquisition lifecycle. ISSEs are responsible for capturing and refining information protection requirements to ensure their integration into information systems...

  • Corporate Systems Security Officer

    3 weeks ago

    Chantilly, Virginia, United States REDLattice, Inc. Full time

    Security Clearance: TS/SCI required; must be eligible for and willing to obtain a polygraph.Location: Chantilly, VA (On-site)About REDLatticeAt REDLattice, we are a global leader in providing differentiated technical cybersecurity products and services. As we continue to evolve in a rapidly changing digital landscape, we are seeking a skilled and motivated...

  • Information Systems Security Engineer with Security Clearance

    3 weeks ago

    Chantilly, Virginia, United States TENICA and Associates LLC Full time

    Information Systems Security EngineerMUST HAVE A TS/SCI PolyThe Information Systems Security Engineer (ISSE) provides support to the customer in the area of Cyber Security.  Daily tasks include, but are not limited to:Provide analytical and technical security recommendations to the customerLead the identification of projects� security...

  • Security Officer

    2 days ago

    Chantilly, Virginia, United States Allied Universal Full time

    Security Officer - Alarm Response Patrol UnarmedOverviewAllied Universal, North America's leading security and facility services company, offers rewarding careers that provide you a sense of purpose. While working in a dynamic, welcoming, and collaborative workplace, you will be part of a team that contributes to a culture that positively impacts the...

  • Security Officer

    2 days ago

    Chantilly, Virginia, United States Allied Universal Full time

    Overview Allied Universal, North America's leading security and facility services company, offers rewarding careers that provide you a sense of purpose. While working in a dynamic, welcoming, and collaborative workplace, you will be part of a team that contributes to a culture that positively impacts the communities and customers we serve. Job Description As...

Information System Security Office

2 days ago

Chantilly, Virginia, United States Leidos Full time

Description
Who We Are
:

Kudu Dynamics is a Leidos owned company, forged out of a decade of experience in computer network operations and staffed with talent who have built, overseen, and enhanced capabilities throughout the entire USG arsenal. Our team of hackers, engineers, makers, and shakers have expe­rience spanning centuries of research, development, and oper­ations

missions - across desktop, mobile, IoT, and embedded platforms. Kudu Dynamics is uniquely qualified to anticipate tomorrow's threats and build the next capabilities.

Job Description
The Information System Security Officer (ISSO) is responsible for maintaining the security posture of assigned information systems in accordance with federal cybersecurity requirements including NIST SP 800-53, JSIG, RMF, and other applicable DoD and agency regulations. The ISSO will ensure compliance with security policies, manage system security documentation, conduct risk assessments, and support authorization processes.

Required Qualifications

  • Active Top Secret Security Clearance.
  • CompTIA Security+.
  • Bachelor's degree in Cybersecurity, Information Technology, or a related field (or equivalent work experience).
  • Minimum of 3–5 years of experience in information system security, cybersecurity, or IT security management.
  • Experience supporting classified systems under the DoD Joint SAP Implementation Guide (JSIG) or ICD 503.
  • Strong knowledge of NIST SP 800-53, Risk Management Framework (RMF), and relevant DoD cybersecurity policies.
  • Experience with as eMASS, ACAS, Tenable/Nessus, Splunk, ManageEngine, or other compliance and vulnerability scanning tools.
  • Strong communication and documentation skills.
  • Understanding of networking, system administration, and security architecture principles.
  • Working knowledge of both Windows and Linux Operating systems.
  • Experience with Security Technical Implementation Guides (STIGs) and Security Content Automation Protocol (SCAP) Compliance Checker.

Preferred Qualifications

  • Experienced with Microsoft Word and Excel.
  • Experienced with Adobe Professional, or other PDF editing software.

Key Responsibilities

  • Implement, manage, and enforce cybersecurity policies and procedures for assigned systems.
  • Coordinate with stakeholders to support achieving Approval to Operate (ATO), continuous monitoring, and system decommissioning.
  • Develop and maintain system security plans (SSPs), risk assessments, contingency plans, Security Controls Traceability Matrixes (SCTM), and related documentation.
  • Monitor system security controls and continuously assess the security posture of the system.
  • Ensure compliance with applicable federal and DoD cybersecurity frameworks (e.g., NIST RMF, JSIG).
  • Conduct vulnerability scans and recognize information system vulnerabilities.
  • Review and analyze system audit logs to identify anomalous activity and potential threats to network resources.
  • Participate in security control assessments and coordinate with the Information System Owner (ISO), System Administrator (SA), and Security Control Assessor (SCA).
  • Report security incidents, conduct incident response coordination, and support remediation activities.
  • Maintain awareness of cybersecurity threats and recommend mitigation strategies.
  • Track Plans of Action and Milestones (POA&Ms) and ensure timely remediation.
  • Support customer inspections.
  • Provide security guidance and awareness to system users and technical staff.
  • Request and track standard and privileged system users.

At Leidos, we don't want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, "what's next?" before the dust settles on "what's now."

If you're already scheming step 20 while everyone else is still debating step 2… good. You'll fit right in.

Original Posting
January 6, 2026

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 $131, $237,350.00

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.

About Leidos
Leidos is an industry and technology leader serving government and 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 $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit

Pay And Benefits
Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at

Securing Your Data
Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.