• Senior RF Engineer (Level III)…

    Lockheed Martin (Littleton, CO)
    …will be required to obtain, and maintain, Top Secret with adjudicated SCI Eligibility \(i\.e\. TS / SCI \) for long term employment on this program ... **Littleton, CO** \! By joining the Lockheed Martin Space Radio Frequency \( RF \) Talent Center...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information more
    Lockheed Martin (12/16/25)
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  • RF Engineer , Staff (Level IV)…

    Lockheed Martin (Littleton, CO)
    …will be required to obtain, and maintain, Top Secret with adjudicated SCI Eligibility \(i\.e\. TS / SCI \) for long term employment on this program ... built for you\. By joining the Lockheed Martin Space Radio Frequency \( RF \) Talent Center...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information more
    Lockheed Martin (11/26/25)
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  • RF Engineer , Staff (Level IV)…

    Lockheed Martin (Littleton, CO)
    …will be required to possess Active Top Secret with adjudicated SCI Eligibility \(i\.e\. TS / SCI \) prior to starting employment\. **Desired Skills:** * ... ever\-changing customer requirements? Come join the Lockheed Martin Space Radio Frequency \( RF \) Talent Center...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information more
    Lockheed Martin (12/03/25)
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  • Senior RF Engineer (Level III)…

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information You Should Know** ... - - - Lockheed Martin Space is seeking an RF Engineer to join our team in...starting employment, selected candidates will be required to possess Top Secret clearance\. For this position, applicants… more
    Lockheed Martin (12/16/25)
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  • Staff RF Engineer - Antenna (Level…

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You Should Know** **Expression of ... for you\. Lockheed Martin Space is seeking a Staff RF Engineer to join our team in...development, and component qualification\. \#LI\-CS1 **Basic Qualifications:** * Active TS / SCI clearance * Degree in electrical engineering… more
    Lockheed Martin (11/19/25)
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  • Senior RF Engineer - Antenna (Level…

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You Should Know** **Expression of ... for you\. Lockheed Martin Space is seeking a Senior RF Engineer to join our team in...test‑plan development, and component qualification\. **Basic Qualifications:** * Active TS / SCI clearance * Degree in electrical engineering… more
    Lockheed Martin (11/05/25)
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  • RF Engineer - TS / SCI

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information You Should Know** ... **Position Overview:** We are seeking highly motivated and versatile RF Engineers to join our dynamic and fast\-paced team,...and presenting data in a probabilistic manner * Active TS / SCI **Desired Skills:** * Background utilizing COTS… more
    Lockheed Martin (11/22/25)
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  • Electronics Engineer IV, Electrical Ground…

    Lockheed Martin (Littleton, CO)
    …life cycle \(development, deployment, retirement\)\. * Must have an active TOP SECRET clearance with the ability to obtain TS / SCI Security Clearance\. ... years professional experience\. * Must have an active DoD ** Top Secret clearance** , thus you are...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI w/Poly **Other Important Information more
    Lockheed Martin (12/10/25)
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  • Systems Engineer (Level 4), RF

    Lockheed Martin (Littleton, CO)
    …citizens and hold an active Top Secret / Sensitive Compartmented Information \( TS / SCI \) clearance\. \- This position is contingent upon ... on the development and delivery of a high\-TRL mobile RF antenna system\. \- Responsible for ensuring the system...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
    Lockheed Martin (12/10/25)
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  • Experienced RF Engineer (Colorado)

    Lockheed Martin (Littleton, CO)
    …* Familiarity with satellite communications or space RF payload development\. * Active Top Secret clearance with the ability to obtain and maintain a Top ... nation's defense systems\.** We are seeking a highly motivated RF Engineer to support the design, development,...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
    Lockheed Martin (11/02/25)
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  • Principal RF Engineer

    RTX Corporation (Aurora, CO)
    …hardware refresh, integration as well as engineering background with technical experience in radio frequency ( RF ) communications links and systems, antenna ... eligible for a security clearance **Security Clearance:** DoD Clearance: TS / SCI At Raytheon, the foundation of everything...create a safer, more secure world. The Apertures and RF Team at Raytheon is looking for a Principal… more
    RTX Corporation (11/15/25)
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  • Senior Principal RF Engineer

    RTX Corporation (Aurora, CO)
    …hardware refresh, integration as well as engineering background with technical experience in radio frequency ( RF ) communications links and systems, antenna ... eligible for a security clearance​ **Security Clearance:** DoD Clearance: TS / SCI At Raytheon, the foundation of everything...create a safer, more secure world. The Apertures and RF Team at Raytheon is looking for a Sr.… more
    RTX Corporation (11/12/25)
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  • RF Engineer

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You Should Know** **Expression of ... Processing team is seeking a highly skilled and motivated RF Engineer Stf to join our development...tools and techniques **Selected candidate must have an active TS / SCI security clearance for consideration\.** **This is… more
    Lockheed Martin (11/09/25)
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  • Principal/Sr. Principal RF Microwave Design…

    Northrop Grumman (Aurora, CO)
    …part of history, they're making history. Northrop Grumman has an opening for a **_Principal RF Microwave Design Engineer / Sr. Principal RF Microwave Design ... and maintain peace on a global scale. The **_Principal RF Microwave Design Engineer / Sr. Principal...Physics with 4 years of relevant experience + Active TS / SCI Clearance at the time of application.… more
    Northrop Grumman (11/20/25)
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  • Lead Systems Engineer (Level 5)

    Lockheed Martin (Littleton, CO)
    …citizens and hold an active Top Secret / Sensitive Compartmented Information \( TS / SCI \) clearance\. \- This position is contingent upon ... in the development and delivery of a high\-TRL mobile RF antenna system\. \- Define the Concept of Operations...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
    Lockheed Martin (12/11/25)
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  • Space Vehicle Sr. Test Engineer

    Lockheed Martin (Littleton, CO)
    **Description:** Must have an active DoD Top Secret or TS / SCI clearance\. Space is a critical domain, connecting our technologies, our security and our ... Secret clearance with the ability to obtain a TS / SCI security clearance\. This position is located...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
    Lockheed Martin (09/19/25)
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  • Principal Multidisciplined Electronic Systems…

    Northrop Grumman (Aurora, CO)
    …to join our team. This position would be based in Aurora, Colorado. The RF Engineer will integrate, troubleshoot, and maintain end-to-end antenna systems and ... of relevant experience with a completed PhD-STEM + **Active TS / SCI clearance at time of application** +...Counterintelligence or Full Scope Polygraph + Strong understanding of radio frequency principles and antenna design. +… more
    Northrop Grumman (12/02/25)
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  • Digital Signal Processing Engineer

    CACI International (Aurora, CO)
    …with software defined radio and/or X-Midas programming + Working familiarity with Radio Frequency ( RF ) systems and test equipment + Understand and ... Digital Signal Processing Engineer Job Category: Engineering Time Type: Full time...scientific, mathematical, or engineering discipline + Active TS / SCI security clearance + Software defined radio more
    CACI International (11/14/25)
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  • Embedded Cyber Software Engineer

    Lockheed Martin (Denver, CO)
    …**Eligibility** MUST BE AU\.S\. CITIZEN \- The selected candidate must possess an active Top Secret clearance with SCI eligibility to start\. \#LI\-CS1 ... **Description:** You will be an Embedded Cyber Software Engineer for a research and development team which...must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You… more
    Lockheed Martin (10/10/25)
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  • Software Engineer Stf

    Lockheed Martin (Littleton, CO)
    …security clearance, you must be a US Citizen for consideration\. **Clearance Level:** TS / SCI **Other Important Information You Should Know** **Expression of ... computationally complex problems * Experience with Microsoft software products * Active Top Secret Clearance required for consideration **Desired Skills:** *… more
    Lockheed Martin (12/11/25)
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