• Principal System Engineer

    KBR (Houston, TX)
    Title: Principal System Engineer /Enterprise Architect KBR - Delivering Solutions, Changing the World. KBR is a global leader in delivering technology-driven, ... expertise, and cutting-edge technologies. KBR is seeking a Principal System Engineer /Enterprise Architect to lead the development...Clearance: Must be a US Citizen. Must have a TS / SCI Clearance with a CI Polygraph or… more
    KBR (10/28/25)
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  • Specialist Systems Engineering 1

    L3Harris (Greenville, TX)
    …Job Location: Greenville, TX Schedule: 9/80 Security Clearance: Must Have an Active DoD Top Secret / SCI to be Considered Job Description: Will be involved ... in developing, maintaining, integrating, and managing ground ISR systems , networks, and system storage devices. Will...have the ability to obtain and maintain a DoD TS / SCI security clearance which requires US citizenship… more
    L3Harris (11/12/25)
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  • Information Security System

    L3Harris (Greenville, TX)
    …land, sea and cyber domains in the interest of national security. Job Title: Information Security System Engineer Job Code 29905 Job Location: Greenville, ... Schedule: 9/80 Job Description: L3Harris Technologies is seeking an Information Security Systems Engineer to...+ Certifications - Sec+, CySA, CASP, CISSP. + DoD TS / SCI Clearance and CI Poly #LI-EN2 L3Harris… more
    L3Harris (10/12/25)
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  • Specialist, Systems Engineering

    L3Harris (Greenville, TX)
    …DOD Secret Security Clearance, with the ability to obtain and maintain a DOD Top Secret ( TS / SCI ) Security Clearance is required. Preferred Additional ... Location: Greenville, TX Schedule: 9/80 Job Description: Mid-level Systems Engineer possessing engineering experience to follow system level engineering… more
    L3Harris (11/08/25)
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  • Specialist, Integration / Test Engineer

    L3Harris (Greenville, TX)
    …+ A current DOD Secret Security Clearance with the ability to obtain TS / SCI + 2+ years of experience or an equivalent combination of education and ... of national security. Job Title: Specialist, Integration / Test Engineer Job Code: 30432 Job Location: Greenville, Texas Schedule:...and the ability to obtain and maintain a DOD TS / SCI clearance, which requires US citizenship. +… more
    L3Harris (11/01/25)
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  • Systems Engineer III

    Applied Research Solutions (San Antonio, TX)
    **Description** Applied Research Solutions is seeking a full-time Systems Engineer III located at Lackland AFB, Texas. **Why Work with us ?** Applied Research ... the probabilities/consequences and creating risk matrices. **Preferred Qualifications:** + Active TS / SCI clearance is preferred; + Master's Degree in Computer… more
    Applied Research Solutions (10/25/25)
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  • Specialist, Integration & Test Engineer

    L3Harris (Greenville, TX)
    Secret clearance at the time of hire with the ability to obtain and maintain Top Secret with SCI . + Must be a US Citizen. Preferred Additional Skills: ... Must possess excellent organization, communications, and presentation skills. + Considerable Systems or Software Engineering experience with System Interfaces. +… more
    L3Harris (11/07/25)
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  • System Engineer

    ManTech (San Antonio, TX)
    **ManTech** seeks an experienced and passionate, career and customer-oriented ** System Engineer ** to join our team located in the San Antonio, TX area. ... software in support of maintenance, developing and testing of information technology systems + Leverage IT automation...(ping, DNS) **Clearance Requirement:** + Must have a current/active TS / SCI with Poly **Physical Requirements:** + Must… more
    ManTech (09/30/25)
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  • Lead, Software Engineer

    L3Harris (Greenville, TX)
    …scripting languages such as Bash and Python. Preferred Additional Skills: + Active US Top Secret / SCI clearance. + Experience in Design Patterns and ... + Demonstrated software component experience in design, development, implementation, and integration in a system of systems . + Demonstrated background using… more
    L3Harris (11/05/25)
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  • Systems Engineer II - Infrastructure…

    RTX Corporation (Richardson, TX)
    …required, as only US citizens are eligible for a security clearance​ **Security Clearance:** TS / SCI with CI Poly - Current At Raytheon, the foundation of ... that create a safer, more secure world. We are seeking an Infrastructure Service Engineer to join our SETC Systems Engineering and Test Capabilities (SETC) team… more
    RTX Corporation (11/11/25)
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