• Information Systems Security Engineer…

    Nightwing (Sterling, VA)
    …and reward system, and performance-based bonuses **Information Systems Security Engineer ( ISSE ) (Open)** Nightwing seeks a cybersecurity professional to serve as an ... ISSE in Sterling, VA. The ISSE will help execute the cybersecurity program as various USG doctrines require, including the ICD 503 and its supplements. The… more
    Nightwing (11/25/25)
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  • Cyber Security Systems Engineer ( ISSE )…

    BAE Systems (Herndon, VA)
    …Experience, & Skills** We are actively seeking an Information Systems Security Engineer ( ISSE ) with a minimum of 11 years' experience with a Bachelor's Degree. Other ... based on position level and/or job specifics. **Cyber Security Systems Engineer ( ISSE ) - Expert** **119794BR** EEO Career Site Equal Opportunity Employer. Minorities… more
    BAE Systems (01/06/26)
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  • Information System Security Engineer ( ISSE

    Assertive Professionals (Chantilly, VA)
    Information System Security Engineer ( ISSE ) About the Organization Established in 2015,AssertiveProfessionals(AP), is anEconomically Disadvantaged Woman Owned Small ... Pipeline Description Assertive Professionalsis seeking anInformation System Security Engineer ( ISSE ) with Poygraph supporting ourNational Security Customer in Chantilly,… more
    Assertive Professionals (01/07/26)
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  • ISSE

    System One (Reston, VA)
    ISSE TS/SCI CI Poly required Reston, VA or...our dynamic team as an Information System Security Engineer ( ISSE ) and make a direct impact on our customer's ... mission. In this role, you will design, implement, and maintain cutting-edge cybersecurity solutions to ensure the availability and security of critical defense systems. You'll be a vital part of the Risk Management Framework (RMF) lifecycle, contributing to… more
    System One (12/26/25)
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  • Information Systems Security Engineer…

    General Dynamics Information Technology (Chantilly, VA)
    …+ years of related experience **US Citizenship Required:** Yes **Job Description:** The ISSE will support our work on assessment and authorization (A&A) of critical ... systems, detection of adversary behavior, and improving the defensive posture of our customer's information systems. The successful candidate will use various tools and methodologies to evaluate the state of systems and applications for vulnerabilities, verify… more
    General Dynamics Information Technology (01/02/26)
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  • Information Systems Security Engineer

    Nightwing (Sterling, VA)
    …markets. Nightwing is seeking a highly skilled and motivated Information Systems Security Engineer ( ISSE ) to join our DevSecOps team in Herndon. The ISSE will ... work closely with cross-functional teams to ensure systems comply with security policies, standards, and best practices. The position requires hands-on experience implementing security compliance, cloud automation, continuous integration/continuous deployment… more
    Nightwing (12/30/25)
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  • Program Security Engineer

    SAIC (Chantilly, VA)
    …Contractor Program Security Officers (CPSO) and Information System Security Engineers ( ISSE ). **Qualifications** + Must possess an active TS/SCI clearance with ... with limited direct supervision. **Desired Qualifications:** + Experience working in an ISSM or ISSE role. + Experience working in a PSO role for a Program or… more
    SAIC (12/23/25)
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  • Information System Security Officer, Classified…

    Lockheed Martin (Herndon, VA)
    …vulnerability management, DISA STIGs\. \- Prior Information System Security Engineer \( ISSE \) or System Administration experience\. \- Bachelor's degree from an ... accredited college in a related discipline, or equivalent experience/combined education, with 2 years of professional experience\. **Security Clearance Statement:** This position requires a government security clearance, you must be a US Citizen for… more
    Lockheed Martin (01/09/26)
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  • Full Spectrum Cyber Solutions SME

    General Dynamics Information Technology (Herndon, VA)
    …specifically NIST, 5+ years and at least two granted ATOs where ISSE functions were performed. + Solution and architecture development concepts and processes, ... 5+ years. Includes leading technical volumes. + Functional understanding of USG authorities and how they collaborate to achieve mission outcomes. + Proven ability to lead development of technical data packages such as a system description, Interface Control… more
    General Dynamics Information Technology (01/06/26)
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  • Information Security Systems Engineer - Expert

    BAE Systems (Herndon, VA)
    …Experience, & Skills** We are actively seeking an Information Systems Security Engineer ( ISSE ) with a minimum of 11 years' experience with a Bachelor's Degree. Other ... degrees will be considered with the year's experience adjusted to accommodate. We are looking for a candidate with specific skills that may include the following: + Implementation and validation of security controls that support the Risk Management Framework… more
    BAE Systems (12/10/25)
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  • Cyber Security Analyst

    ManTech (Herndon, VA)
    …and information security protocols to drive tasking and ensure compliance + ISSE /ISSO tasking in support of documenting and navigating the customer's accreditation ... process for ATO **Minimum Qualifications:** + Bachelor's degree in a related field OR additional equivalent work experience + 5+ years of experience relevant to this position + Experience with Software Development Lifecycle, application security, Cloud… more
    ManTech (11/22/25)
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  • SAP NS2 Sr. Java Developer - Active TS SCI…

    SAP (Herndon, VA)
    …Have + Experience with government-sponsored products like MLDBR, X-Arbitor, or legacy ISSE Guard. + Familiarity with VMware, Azure, or sandboxed lab environments ... mimicking secured network domains. + Prior experience working in highly regulated, security-sensitive environments (eg, NS2, DoD, or similar). Soft Skills + Excellent written and verbal communication skills. + Highly organized with strong attention to detail.… more
    SAP (11/13/25)
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  • System Administrator

    CACI International (Chantilly, VA)
    …diagrams, standard operating procedures, and system documentation. + Coordination with customer ISSE to ensure security accreditation of all project IT systems. This ... includes writing documentation and plans to successfully navigate ICD 503 and customer's unique security requirements. + Troubleshoots and resolves hardware, software, and communications problems. Required qualifications: + **TS/SCI with Polygraph** +… more
    CACI International (12/29/25)
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  • ISSO

    SAIC (Chantilly, VA)
    …+ **7+ years of Information Security experience. Preferrable as an ISSO, ISSE , or DAOR.** + **Demonstrated experience implementing the RMF process, applying NIST ... 800‑53 controls, and developing/maintaining certification and accreditation documentation.** + **Experience with ICD‑503 RMF implementation within the Intelligence Community.** + **Prior experience supporting cybersecurity operations or compliance within the… more
    SAIC (12/20/25)
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  • Information Systems Security Engineer

    TekSynap (Chantilly, VA)
    …and risk acceptance documents for information system vulnerabilities. + Coordinates with engineering ISSE and system SMEs to obtain approval via SDA's RMF process. + ... Conduct reviews of the network, system, application and/or service in accordance with the periodicities set within the Monitoring Strategy of the Security Authorization Package Review and update approved ATO as required or requested in conjunction of auditors,… more
    TekSynap (12/06/25)
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  • Cyber Security Architect

    DCCA (Chantilly, VA)
    …in cyber security and systems architecture. Requesting split support as ISSE /A&A, Strategic, DevSecOps, management and new product evaluation. Required Skills: * ... The Contractor team shall assist the Sponsor shepherd multiple IT systems through the Assessment and Accreditation (A&A) processes. * Demonstrated experience leading security accreditation efforts for enterprise systems. * Demonstrated experience with security… more
    DCCA (11/21/25)
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  • Senior Information System Security Engineer

    General Dynamics Information Technology (Reston, VA)
    …problem solving, team player + Preferred Skills: Experience as an ISSO, ISSM, ISSE , or Security Controls Assessor. Experience with Special Access Programs (SAPs) and ... Intelligence Community. + Location: On Customer Site + US Citizenship Required GDIT IS YOUR PLACE: + 401K with company match + Comprehensive health and wellness packages + Internal mobility team dedicated to helping you own your career + Professional growth… more
    General Dynamics Information Technology (11/21/25)
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