• Senior Specialist, Systems Engineering…

    L3Harris (Centennial, CO)
    …(100% On-site) Job Description: L3Harris Technologies is currently seeking a Lead, Systems Engineer - STO Planner to support a high-visibility, mission-critical ... the interest of national security. Job Title: Senior Specialist, Systems Engineering - STO Planner (Active TS /SCI...of 10 years of prior related experience. + Active Top Secret /SCI with CI Poly clearance required.… more
    L3Harris (09/13/25)
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  • Junior Software Engineer - TS /SCI…

    Parsons Corporation (Denver, CO)
    …Grid Systems , Parallel Processing, Threading **Security Clearance Requirement:** An active Top Secret SCI w/Polygraph security clearance is required for this ... Blue Ridge Envisioneering is seeking qualified candidates to fill a **Software Engineer ** position at our Denver, CO location. Blue Ridge Envisioneering, a Parsons… more
    Parsons Corporation (09/24/25)
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  • Principal Level Digital Signal Processing…

    Parsons Corporation (Denver, CO)
    …communications, and signal localization challenges **Security Clearance Requirement:** An active Top Secret SCI w/Polygraph security clearance is required for ... Parsons Company, is seeking qualified candidates to fill a Digital Signal Processing Engineer (DSP) positions at our headquarters in Chantilly, VA. We are currently… more
    Parsons Corporation (09/24/25)
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  • Cost Account Manager (CAM) - Systems…

    RTX Corporation (Aurora, CO)
    …premier satellite ground system? We have an exciting opportunity for a **Senior Systems Engineer - Cost Account Manager** to support a cross-disciplined ... citizens are eligible for a security clearance​ **Security Clearance:** TS /SCI without Polygraph At Raytheon, the foundation of everything...the IPT Lead, other IPT CAMs, the Program Chief Engineer , and the Program Manager. **What You Will Do**… more
    RTX Corporation (11/13/25)
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  • Space Systems Simulation Lead

    General Atomics (Englewood, CO)
    …academic mission requirements. Our space systems team is looking for a systems engineer to lead design, implementation, integration, and test of our hardware ... is one of the world's leading resources for high-technology systems development ranging from the nuclear fuel cycle to...+ Must be able to obtain and maintain a TS /SCI security clearance. **Salary:** $116,480 - $208,505 **Travel Percentage… more
    General Atomics (10/24/25)
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  • Software Engineer TS /SCI Poly

    Leidos (Aurora, CO)
    **Description** Leidos is looking for a Software Engineer to join a high performing agile team using the Scaled Agile Framework (SAFe) methodology to support a ... to support an on-going mission and operational system. **Job Summary** The Software Engineer will perform software development activities as a member of an agile… more
    Leidos (09/15/25)
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  • Electrical Engineer ( TS /SCI…

    Fluor (Aurora, CO)
    …**Job Description** Must have an active (or ability to obtain and maintain) TS /SCI with CI Polygraph Will work under general supervision to initiate, lead, plan, ... strategies, and ensure quality through testing and validation activities. The Electrical Engineer shall perform, but not limited to: * Support facility project… more
    Fluor (10/29/25)
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  • Data Scientist/Cost Engineer ( TS…

    Lockheed Martin (Littleton, CO)
    …experience in lie of degree is also considered \- Currently active TS Clearance \- Strong communication/ interpersonal skills \- Critical thinking and ... data collection and normalization or data science or data analytics or systems engineering/architecture or spacecraft engineering fields or finance or anything else… more
    Lockheed Martin (11/07/25)
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  • Senior RF Engineer - Antenna (Level IV)…

    Lockheed Martin (Littleton, CO)
    …find a career that's built for you\. Lockheed Martin Space is seeking a Senior RF Engineer to join our team in Littleton, CO\! We are looking for an experienced RF ... Engineer who holds Certified Principal Engineer \(CPE\)...Lockheed Martin securing the contract\.\*\*\ **Basic Qualifications:** * Active TS /SCI clearance * Degree in electrical engineering or other… more
    Lockheed Martin (11/05/25)
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  • Software Engineer TS /SCI Poly

    Leidos (Aurora, CO)
    **Description** **Leidos** has a new and exciting opportunity for a **Software Engineer ** in our **National Security Sector's (NSS) Cyber & Analytics Business Area ... us and make a difference in National Security!** **Job Summary** The Software Engineer will perform software development activities as a member of an agile… more
    Leidos (08/26/25)
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