• Senior Systems Engineer

    Amentum (Norfolk, VA)
    … Information Technology, or a related field is required. + Must have an Active Top Secret / SCI US Government Clearance. Note: US Citizenship is required to ... Amentum is seeking a Senior Systems Engineer for a contract pending...maintain a Top Secret / SCI Clearance. **Desired Experience/Qualifications:**… more
    Amentum (11/20/25)
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  • RF Software Engineer (Starshield)

    SpaceX (Hawthorne, CA)
    …software ADDITIONAL REQUIREMENTS: + Ability to obtain and maintain Active Top Secret or Top Secret SCI clearance + Active Top Secret or ... RF Software Engineer (Starshield) Hawthorne, CA Apply SpaceX was founded...and skills, education, and experience. Those with an active TS / SCI clearance will receive a 10%… more
    SpaceX (01/06/26)
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  • Senior Principal SEIT Engineer (Contingent)

    RTX Corporation (Anaheim, CA)
    …across disciplines and lead technical integration efforts. + Ability to obtain and maintain a Top - Secret SCI ( TS / SCI ) US government issued security ... system behavior. + Collaborate with software, hardware, and systems teams to integrate and verify algorithms in real-time...like STK, Simulink, or custom RF environments. + Existing Top - Secret SCI ( TS /… more
    RTX Corporation (01/08/26)
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  • Senior Engineering Lead

    CACI International (Triangle, VA)
    …partners **Qualifications:** _Required:_ + Top Secret ( TS ) with Sensitive Compartmented Information ( SCI ) eligibility security clearance ( ... Lead Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS / SCI Employee Type: Regular Percentage of Travel Required: Up to 10%… more
    CACI International (12/11/25)
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  • Lead Cryptography Engineer

    The MITRE Corporation (Colorado Springs, CO)
    …week on-site. Preferred Qualifications: + Preference given to qualified candidates with active DoD Top Secret / SCI Clearance. + Advanced degree in Computer ... backwards compatibility with legacy Missile Warning and Missile Defense systems + Enhance MWTD system performance, ensure...year from the date of hire, the following clearance(s): Top Secret / SCI Salary compensation range… more
    The MITRE Corporation (01/09/26)
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  • Systems Engineer (Software) - Level…

    Northrop Grumman (Aurora, CO)
    …with a Master's; 0 years of relevant experience with a PhD. + Must have an active Top Secret / SCI clearance at the time of application and willingness to sit ... Grumman Space Systems (NGSP) is seeking a ** Systems Engineer - Level 3 or Level...experience with a PhD. + Must have an active Top Secret / SCI clearance at the… more
    Northrop Grumman (12/12/25)
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  • Senior Principal Software Engineer…

    RTX Corporation (Anaheim, CA)
    …with DevSecOps pipelines, containerization (Docker), and CI/CD in secure environments. + Active DoD Top Secret SCI ( TS / SCI ) security clearance ... Engineer ** with deep expertise in Global Navigation Satellite Systems (GNSS) operating within a complex electronic warfare environment...custom boards). + Ability to obtain and maintain a Top - Secret SCI ( TS /… more
    RTX Corporation (01/06/26)
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  • Principal Reverse Systems Engineer

    RTX Corporation (Anaheim, CA)
    …ability to work independently yet collaboratively in a team environment. + Active and transferable Top - Secret SCI ( TS / SCI ) US government issued ... Applied Signal Technology (AST) is seeking a **Principal Reverse Systems Engineer ** who strives for excellence and...systems concepts and signal processing fundamentals + Existing Top - Secret SCI with Polygraph (Active… more
    RTX Corporation (10/15/25)
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  • Senior Ground Segment Systems…

    SAIC (El Segundo, CA)
    … Secret clearance with the ability to obtain and maintain access to Sensitive Compartmented Information and Special Programs and be willing to consent ... is seeking you, our latest experienced Senior Ground Segment Systems Engineer to support to the US...in developing, deploying, and sustaining a National Security Space system within the Space Systems Command Space… more
    SAIC (12/05/25)
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  • Infrastructure / Networking Engineer II

    RTX Corporation (West Valley City, UT)
    …+ Experience with process improvement + Experience with automated system deployments + Existing Top - Secret SCI ( TS / SCI ) with Poly (Active within ... asset in the SIGINT domain, is seeking an Infrastructure Engineer II who strives for excellence and has a...Ability to obtain and maintain a US government issued Top Secret SCI ( TS… more
    RTX Corporation (12/11/25)
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