• Information Systems Security Engineer (Senior)-…

    BAE Systems (Sterling, VA)
    …to improve our future and protect our freedom. We are looking for an ISSE to join our technology-based program supporting a key government customer. This program ... more discipline, but can be waived if previous direct ISSE support to this customer s agency. Specific skills...a basic understand needs to be conveyed by the ISSE when speaking with others or in writing the… more
    BAE Systems (11/21/25)
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  • ISSO/ ISSE , TS/SCI w/Polygraph

    General Dynamics Information Technology (Bethesda, MD)
    …Description:** Seize your opportunity to make a personal impact as an ISSO/ ISSE supporting customer activities. GDIT is your place to make meaningful contributions ... career. At GDIT, people are our differentiator. As an ISSO/ ISSE , you will help ensure today is safe and...and tomorrow is smarter. Our work depends on an ISSO/ ISSE joining our highly skilled team to be a… more
    General Dynamics Information Technology (12/11/25)
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  • 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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  • 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 (12/18/25)
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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 (10/09/25)
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  • Information Systems Security Engineer

    SAIC (Chantilly, VA)
    **Description** SAIC is seeking an experienced Information Systems Security Engineer ( ISSE ) for a position located in Chantilly, VA. The successful candidate will ... DUTIES:** Key duties/responsibilities include, but are not limited to: + Provide ISSE expertise for transitioning NRO or DoD systems authorization to Intelligence… more
    SAIC (11/06/25)
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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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  • 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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  • National Security Sector Referrals

    Leidos (Reston, VA)
    …Engineer + Systems Administration - Linux + Information Security Systems Engineer/Officer ( ISSE /ISSO) + Data Scientist + Systems Engineer + TechSIGINT Analyst + ... Oracle Database Administration (DBA) + And many more technical positions **Basic Qualifications:** + Experience Preferred (and commonly required): Bachelor's degree, relevant experience or 4 years of experience in lieu of a degree + Clearance Preferred (and… more
    Leidos (10/18/25)
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  • Authorization and Accreditation Lead

    AeroVironment (Herndon, VA)
    …(6) years experience in a role such as Information Systems Security Engineer ( ISSE ), accrediting Sponsor programs of similar scope and complexity. + Experience with ... completing new system(s) authorization and accreditation through the Sponsor's Authorization and Accreditation (A&A) processes, procedures, security requirements, and systems. + Experience in security policy, counterintelligence, and security controls. + An… more
    AeroVironment (12/20/25)
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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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  • Senior Information System Security Officer

    The MITRE Corporation (Mclean, VA)
    …and policy changes. + Previous experience operating as a SCI/SAP ISSO, ISSE , System Administrator, or ISSM. + Strong analytical and problem-solving skills, with ... the ability to develop innovative solutions. + Experience mentoring junior staff and fostering a collaborative team environment. + Familiarity with insider threat programs and strategies for mitigating insider risks. + Expertise in conducting cybersecurity… more
    The MITRE Corporation (12/18/25)
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  • DevOps Engineer - TS/SCI with Poly required

    V2X (Mclean, VA)
    …Docker + Datastore Types: Graph, NoSQL, and/or Relational + Familiarity in ISSE roles and responsibilities + Active TS/SCI with Poly required **Preferred ... Qualifications:** + Familiarity with AWS CDK + Terraform, Packer + Design Concepts: REST APIs + Programming Languages: JavaScript/NodeJS + Processing Tools: Presto/Trino, MapReduce, Hive **Employee benefits include the following:** + **Healthcare coverage** +… more
    V2X (11/13/25)
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  • Senior Cyber Risk Manager (Splunk Engineer)

    The MITRE Corporation (Mclean, VA)
    …and policy changes. + Previous experience operating as a SCI/SAP ISSO, ISSE , System Administrator, or ISSM. + Strong analytical and problem-solving skills, with ... the ability to develop innovative solutions. + Experience mentoring junior staff and fostering a collaborative team environment. + Familiarity with insider threat programs and strategies for mitigating insider risks. This requisition requires the candidate to… more
    The MITRE Corporation (11/08/25)
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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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