• Modeling and Simulation Engineer

    Sciolex Corporation (Chantilly, VA)
    …in acquiring modern processing applications. Qualifications & Physical Requirements + Active Top Secret / SCI Clearance with Polygraph. + Bachelor's degree ... that surpasses the epitome of excellence. Our core services include systems engineering technical advice, technical support, and administrative assistance. From our… more
    Sciolex Corporation (10/09/25)
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  • Lead Information Security Engineer

    Lumen (Herndon, VA)
    …Required (education/experience/skills/competencies): + Candidate must be a US Citizen with an active TOP SECRET clearance Preferred: + 5-7 years in a Security ... trust and transparency. People power progress. We're looking for top -tier talent and offer the flexibility you need to...threats and issue posture and assessment reports This Lead Information Security Engineer position operates in a… more
    Lumen (12/10/25)
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  • Operations Research Analyst/ Engineer

    JHNA (Alexandria, VA)
    …proposals. Required Qualifications: + Candidate must be a US Citizen with an active Top Secret / SCI Clearance. + Education: Bachelors Degree from an ... Time Overview: JHNA is currently seeking a talented Senior Operations Research Analyst/ Engineer to support our OUSW government customer in Alexandria, VA. This… more
    JHNA (12/05/25)
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  • Senior Python Engineer

    SAIC (Quantico, VA)
    …Engineering, or a related field. Equivalent work experience may be considered. + Active Top Secret clearance with SCI eligibility. + IAT-II Certification ... is the designated oversight authority on the accreditation of classified facilities, information systems , and the insider threat program. This involves security… more
    SAIC (12/03/25)
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  • EO GEOINT Engineer

    SAIC (Chantilly, VA)
    …or more experience. Relevant experience to be substituted in lieu of degree. + Top Secret / SCI clearance with Polygraph. + Electro-Optical/EO GEOINT or ... **Description** SAIC is seeking **Electro-Optical GEOINT Engineer ** to support SAIC's Prime Program, Landmark AOS...Ground Enterprise Directorate (GED), responsible for the acquisition of systems over the complete end-to-end life cycle. As the… more
    SAIC (11/21/25)
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  • Senior Cloud Engineer Architect Azure

    Leidos (Fort Belvoir, VA)
    …Microsoft Certified: Azure Solutions Architect Expert certification (or equivalent). + Active DoD Top Secret clearance with SCI Eligibility. + DoD 8570 ... Leidos Digital Modernization is seeking an experienced **_Senior Cloud Engineer Architect (Azure)_** to support large-scale migration and operations on… more
    Leidos (11/15/25)
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  • Linux Engineer

    ManTech (Quantico, VA)
    …PostgreSQL. **Security Clearance Required** : + Must have a current/active Top Secret with the ability to obtain SCI . **Physical Requirements:** + Sedentary ... Engineer will maintain, update, and secure existing Linux systems on both classified and unclassified networks in support...to apply for a position with MANTECH, please email us at ###@mantech.com and provide your name and contact information more
    ManTech (10/31/25)
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  • Cyber Reverse Engineer

    CACI International (Sterling, VA)
    …years of relevant work experience** **Experience in computer science and information systems ** **Experience analyzing and reverse engineering Assembly binaries ... Cyber Reverse Engineer Job Category: Engineering Time Type: Full time...Time Type: Full time Minimum Clearance Required to Start: TS / SCI Employee Type: Regular Percentage of Travel… more
    CACI International (12/24/25)
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  • Software Engineer Integration Team

    CACI International (Dulles, VA)
    …Team Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS / SCI Employee Type: Regular Percentage of Travel Required: Up to 10% ... Anticipated Posting End: 1/31/2026 The Opportunity: As an Software Engineer , you will support the integration and testing of...Git / Bitbucket, Confluence / Jira, Gitlab, etc. Active TS / SCI clearance Desired: Working in Agile and… more
    CACI International (12/17/25)
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  • Chief Cyber Security Engineer

    Virtual Service Operations (Arlington, VA)
    …Virtual Service Operations is actively seeking a talented individual with an active TS / SCI clearance to lead the architecture, design, and integration of ... Chief Cyber Security Engineer * Arlington, VA (http://maps.google.com/maps?q=Arlington+VA+USA) Description Are you...lieu of degree Requirements + Must possess an active TS / SCI security clearance + Must be within… more
    Virtual Service Operations (12/09/25)
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