• Scientist, Information Security Systems

    L3Harris (Palm Bay, FL)
    …cyber domains in the interest of national security. Job Title: Sr Information Security Systems Engineer Job Code: 229346 Job Location: Palm Bay, FL Job Schedule: ... available to qualified applicants Job Description: This role applies current systems security engineering methods, practices and technologies to the architecture,… more
    L3Harris (09/27/25)
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  • Systems Engineer ( SME )

    Leidos (Bethesda, MD)
    **Description** **Leidos** has a new and exciting opportunity for a Systems Engineer - SME in our **National Security Sector's (NSS) Cyber & Analytics ... **Join us and make a difference in National Security!** Systems Engineers on this program monitor operations and collect...Must be a US citizen and have an active TS /SCI with a polygraph + Expert applying… more
    Leidos (12/11/25)
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  • ElasticSearch Systems Engineer

    Acclaim Technical Services (Bethesda, MD)
    TS /SCI clearance and polygraph to support a program in Bethesda, MD. The ElasticSearch Systems Engineer SME role provides support across an Agile team in ... this as a significant strength, and it shows: ATS is consistently ranked as a top workplace among DC area firms and continues to grow. We are actively hiring… more
    Acclaim Technical Services (10/28/25)
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  • Principal PNT Systems Engineer

    The MITRE Corporation (Colorado Springs, CO)
    …external partners; communicate technical status, risks, and recommendations. + Act as a subject matter expert in NAVWAR, GPS Enterprise Modernization, ... In this role, you will serve as MITRE's PNT systems engineer support to Space Systems...+ Demonstrated technical depth in the field of GPS systems engineering. + Active Top Secret more
    The MITRE Corporation (12/14/25)
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  • Senior Systems Engineer

    ManTech (Washington, DC)
    …cross-functional teams to deliver integrated solutions and meet project goals + Serve as a subject matter expert and may lead teams on complex engineering ... **MANTECH** seeks a motivated and career-focused **Senior Systems Engineer ** to join our team...analyst capacity **Clearance Requirements:** + Must hold an active Top - Secret clearance. **Physical Requirements:** + The person… more
    ManTech (12/07/25)
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  • Systems Engineer - Level 3

    Northrop Grumman (Colorado Springs, CO)
    …Sector is seeking an experienced Systems Engineer - Level 3 to provide Subject Matter Expert ( SME ) support to the Ground-based Missile Defense ... RELOCATION ASSISTANCE: No relocation assistance available CLEARANCE TYPE: Top Secret TRAVEL: Yes, 10% of...of history, they're making history. **GFC Training & Exercises Subject Matter Expert ( SME more
    Northrop Grumman (12/13/25)
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  • Systems Engineer

    ISYS Technologies (Schriever AFB, CO)
    …activities, including both on-site and remote telephonic maintenance support. + Serve as a subject matter expert for program applications, providing Level 2 ... Minimum Clearance Required Top Secret SCI Responsibilities I2X Technologies...of our government customers. I2X Technologies is seeking a Systems Engineer to support ongoing activities for… more
    ISYS Technologies (12/10/25)
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  • Systems Engineer

    ISYS Technologies (Schriever AFB, CO)
    …activities, including both on-site and remote telephonic maintenance support. + Serve as a subject matter expert for program applications, providing Level 2 ... Minimum Clearance Required Top Secret SCI Responsibilities I2X Technologies...of our government customers. I2X Technologies is seeking a Systems Engineer to support ongoing activities for… more
    ISYS Technologies (12/10/25)
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  • Artificial Intelligence (AI) Systems

    HII (Suffolk, VA)
    …J7, Joint Wargaming & Experimentation Division (JWED) as an Artificial Intelligence (AI) subject matter expert to support JWED and wargaming/experimentation ... writing and style. + Work with tools and in work environments from unclassified to Top Secret levels (NIPR, SIPR, JWICS). + Utilize and have a proficiency with… more
    HII (11/29/25)
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  • Systems Test Engineer / Principal…

    Northrop Grumman (Chantilly, VA)
    …operated globally. The team provides 24/7/365 subject matter expert ( SME ) support to ensure the systems are functioning properly. In support of these ... Systems ** is seeking a candidate to fill a ** Systems Test Engineer / Principal Systems...and techniques **Preferred Qualifications for both levels:** + Active Top Secret /SCI security clearance + Experience in… more
    Northrop Grumman (10/23/25)
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