• RF Engineer - Antenna (Level IV)…

    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 ... with Antenna payload architecture and/or performance analysis * Active Top Secret clearance; must be able to...clearance; must be able to obtain and maintain a TS / SCI clearance; US citizenship required **Desired Skills:**… more
    Lockheed Martin (12/20/25)
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  • RF Engineer - Antenna (Level III)…

    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 ... of RF communications systems link budget analysis\. * Active Top Secret clearance; must be able to...clearance; must be able to obtain and maintain a TS / SCI clearance; US citizenship required **Desired Skills:**… more
    Lockheed Martin (12/20/25)
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  • Regional Safety Engineer , Data

    Amazon (Aurora, CO)
    …candidate selected be a US Citizen and obtain and maintain an active TS / SCI security clearance. Key job responsibilities Daily interactions with our customers ... largest cloud computing infrastructure team as a Regional Safety Engineer . As a Regional Safety Engineer , you...- United States citizen with ability to obtain a TS / SCI security clearance. Preferred Qualifications - … more
    Amazon (01/13/26)
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  • Software Engineer ( Top

    KBR (Colorado Springs, CO)
    Title: Software Engineer ( Top Secret Security Clearance Required) Belong. Connect. Grow. with KBR! KBR's National Security Solutions team provides high-end ... national security. KBR, is seeking a highly motivated Software Engineer to join us in supporting our great nation,...Standard Required Qualifications + Security Clearance: Active US Government Top Secret / SCI security… more
    KBR (01/13/26)
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  • Facility Operations Center Engineer , ADC…

    Amazon (Denver, CO)
    …requires that the candidate selected must currently possess and maintain an active TS / SCI security clearance with polygraph. The position further requires that, ... start, the selected candidate obtain and maintain an active TS / SCI security clearance with polygraph or commensurate...to the platform on a 24x7x365 basis. We support Data Center Engineer Operations teams who are… more
    Amazon (10/23/25)
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  • Manager, Info Security Systems Engineer

    L3Harris (Broomfield, CO)
    …cyber domains in the interest of national security. Job Title: Manager, Info Security Systems Engineer TS / SCI - Boulder, CO Job Code: 31261 Job Location: ... requirements development, design, testing, configuration management, and maintenance of information systems and data . + Assist program...years of prior related experience. + Minimum of active Top Secret / SCI security clearance required,… more
    L3Harris (11/15/25)
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  • Software Engineer TS / SCI

    CACI International (Denver, CO)
    Software Engineer TS / SCI Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS / SCI with Polygraph Employee Type: ... on developing microservices and a user interface (UI) for data -rich applications with complex workflows. + Your daily work...development experience **Qualifications:** **Required:** + Clearance: Must have a TS / SCI clearance, a TS / SCI more
    CACI International (01/17/26)
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  • Electrical Engineer ( TS

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

    Leidos (Aurora, CO)
    **Description** Leidos has an exciting opportunity for a Sr. Software Engineer ! *Must have an active TS / SCI Polygraph up front. No exceptions.* You will ... as both an individual and a member of our top -notch agile development team building a large complex enterprise...use design software tools, provide support using formal specifications, data flow diagrams, and other accepted design techniques and… more
    Leidos (12/10/25)
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  • Voice and Hardware Systems Engineer

    Leidos (Colorado Springs, CO)
    …meet the knowledge, skills, and abilities listed below + US Citizen with an active TS / SCI with Polygraph + Requires BS and 2+ years of prior relevant experience ... has an opening for a **Voice and Hardware Systems Engineer ** to support a client's requirements in a challenging...abilities, as well as internal equity, alignment with market data , applicable bargaining agreement (if any), or other law.… more
    Leidos (12/06/25)
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