• Test Engineer ( Secret )

    SMX (Boulder, CO)
    Test Engineer ( Secret ) (4777)at SMX(View all jobs) (https://www.smxtech.com/careers/) Boulder, CO Are you interested in the next generation of Space Force ... pressing needs. We have an immediate opportunity for a ** Test Engineer ** who is excited to apply...is on-site in Boulder, CO 5 days per week. Secret level clearance is required.** **Essential Duties & Responsibilities**… more
    SMX (10/30/25)
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  • RF Engineer , Senior (Level III)…

    Lockheed Martin (Littleton, CO)
    …Flight and Interplanetary Missions, Missile Defense, and more\. As a Senior RF Engineer within Lockheed Martin Space, you will perform the following: * Support ... multiple phases of RF product lifecycle including design, development, test , and deployment * Engage with other leaders and Subject Matter Experts to participate in… more
    Lockheed Martin (12/10/25)
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  • Guidance, Navigation & Control Engineer

    Lockheed Martin (Littleton, CO)
    …Role** : We are seeking an experienced Guidance, Navigation, and Control \(GNC\) Engineer , Sr\. Staff \(Level V\) who will specialize in Modeling and Simulation ... and working collaboratively across teams Job Responsibilities and Modeling & Simulation Engineer tasks, will include: * Design and documentation of model and… more
    Lockheed Martin (11/22/25)
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  • Survivability & Nuclear Hardness Engineer

    Lockheed Martin (Littleton, CO)
    …Learn more about Trident II D5 fleet Ballistic Missile\. As a Survivability Staff Engineer , you will lead and / or support the Specialty Engineering team in one ... nuclear radiation * Conducting technical planning, specification requirements derivation, test and analysis, design, planning and execution, documentation, and… more
    Lockheed Martin (12/06/25)
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  • Electronics Engineer IV, Electrical Ground…

    Lockheed Martin (Littleton, CO)
    …lead a team responsible for development, test , and maintenance of integrated test systems, and experience as Subject Matter Engineer or equivalent\. * ... **Description:** Join our team as an **Electronics Engineer ** where you will be a part of...consisting of software, hardware, RF, and systems integration and test engineers\. Location: **This position does not support teleworking**… more
    Lockheed Martin (12/10/25)
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  • RF Engineer , Staff (Level IV) - Top…

    Lockheed Martin (Littleton, CO)
    …\(MBSE\) and related tools like DOORS or Jira\. * Design, develop, and test RF systems, including antennas, transceivers, and signal processing algorithms\. * Tackle ... Successful applicants will have experience working as a Certified Principle Engineer \(CPE\), Responsible Systems Engineer \(RSE\), or equivalent\. \#NSSGS… more
    Lockheed Martin (11/26/25)
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  • Senior RF Engineer (Level III) - Top…

    Lockheed Martin (Littleton, CO)
    …that's built for you\. - - - Lockheed Martin Space is seeking a **Senior RF Engineer ** to join our team in **Littleton, CO** \! By joining the Lockheed Martin Space ... Successful applicants will have experience working as a Certified Principle Engineer \(CPE\), Responsible Systems Engineer \(RSE\), or equivalent\. \#NSSGS… more
    Lockheed Martin (12/16/25)
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  • Senior Mechanical Engineer - Stress…

    Lockheed Martin (Englewood, CO)
    …of missile flight structures and mechanisms, electronic components, and ground and test support equipment using standardized processes and tools\. You will review ... in design reviews and outside contracts * Supporting static structural test definition, requirements, monitoring, data reduction, and comparison to analysis while… more
    Lockheed Martin (12/11/25)
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  • RF Engineer (Level V) - Top Secret

    Lockheed Martin (Littleton, CO)
    …that's built for you - - - Lockheed Martin Space is seeking an experienced RF Engineer to join our team in Littleton, CO\! In this role, you will support the Global ... modeling, calibration, risk/opportunities, support to proposal efforts, and payload post\- test analysis\. \#NSSGS \#SpaceRF **Basic Qualifications:** * Experience with… more
    Lockheed Martin (12/19/25)
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  • Electromagnetic Environmental Effects (E3)…

    Lockheed Martin (Littleton, CO)
    …ensuring security and prosperity\. As an Electromagnetic Engineering Effects \(E3\) Engineer , you will support the System Engineering \(SE\) Special Disciplines ... perform main aspects of EMI testing to include: planning, writing of test procedures, conducting/overseeing the equipment availability, setup, testing, and test more
    Lockheed Martin (12/04/25)
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  • Laser Communication Engineer (Level III)…

    Lockheed Martin (Littleton, CO)
    Engineer will contribute to the procurement, design, development, test and integration of space\-based optical communication systems\. You will develop ... you\. Lockheed Martin Space is seeking a Laser Communication Engineer to join our team in Littleton, CO\! As...free space optical communication \(laser communication\) * Active Top Secret clearance; must be able to obtain a TS/SCI;… more
    Lockheed Martin (12/24/25)
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  • RF Engineer - Antenna (Level IV) - Top…

    Lockheed Martin (Littleton, CO)
    …a career that's built for you\. Lockheed Martin Space is seeking an experienced RF Engineer to join our team in Littleton, CO\! We are looking for an experienced RF ... Engineer who holds Certified Principal Engineer \(CPE\)...antenna‑element hardware from concept, design, modeling/analysis, through system integration, test ‑plan development, and component qualification\. \#LI\-CS1 \#NSSGS \#SpaceRF **Basic… more
    Lockheed Martin (12/20/25)
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  • RF Engineer - Antenna (Level IV) - Top…

    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 \(CPE\) experience and has deep knowledge of antenna element design and active electronically‑steerable arrays… more
    Lockheed Martin (12/20/25)
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  • Systems Integration Engineer II - Active…

    RTX Corporation (Aurora, CO)
    …as only US citizens are eligible for a security clearance​ **Security Clearance:** Secret - Current At Raytheon, the foundation of everything we do is rooted ... capture effort? We have an exciting opportunity for a **System Readiness Integration Engineer ** . In this role, you will plan and perform integration activities… more
    RTX Corporation (12/05/25)
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  • Specialist, Network Plan Engineer

    L3Harris (Broomfield, CO)
    …domains in the interest of national security. Job Title: Specialist, Network Plan Engineer Job Code: 31908 Job Location: Boulder/North Denver, CO Job Schedule: 9/80 ... pressure environments. + Travel as required for integration and test efforts (up to 40%), with some foreign travel...of 2 years of prior related experience. + Top Secret / SCI security clearance required. + DOD 8570.01M… more
    L3Harris (12/12/25)
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  • Specialist, Info Security Systems Engineer

    L3Harris (Broomfield, CO)
    …the interest of national security. Job Title: Specialist, Information Security Systems Engineer Job Code: 31060 Job Location: Boulder/North Denver, CO Job Schedule: ... tools (ACAS, SCAP, etc.). + Support security engineering activities, including test , configuration management and maintenance of information systems and data. +… more
    L3Harris (11/12/25)
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  • Guidance, Navigation, & Control Engineer

    Lockheed Martin (Littleton, CO)
    …* Strong experience in spacecraft controls design, analysis, simulation, and test \. * Experience with simulation and programming tools such as MATLAB/Simulink, ... requires the selected employee to be aU\.S\. Citizen\. * Active Top Secret clearance with SCI \(adjudicated or eligibility\) is required for consideration\. *… more
    Lockheed Martin (12/13/25)
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  • Guidance, Navigation & Control Engineer

    Lockheed Martin (Littleton, CO)
    …models in MATLAB/Simulink and C\+\+ environments\. * Support system integration, test , and verification activities to ensure subsystem performance meets program ... position requires the selected employee to be aU\.S\. Citizen\. * Active Top Secret clearance \(adjudicated or eligibility\) is required for consideration\. * Top … more
    Lockheed Martin (12/04/25)
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  • Staff Project Engineer - Secret

    Lockheed Martin (Littleton, CO)
    …levels of total system product to include: concept, design, fabrication, test , installation, operation, maintenance and disposal\. Ensures the logical and systematic ... software specifications\. Come support our legacy of mission success\. As a Project Engineer Staff, you will be responsible for managing projects under the the Sig… more
    Lockheed Martin (12/05/25)
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  • Senior Specialist, Cyber Infrastructure Systems…

    L3Harris (Broomfield, CO)
    …interest of national security. Job Title: Senior Specialist, Cyber Infrastructure Systems Engineer Job Code: 32451 Job Location: Denver, CO Job Schedule: 9/80 Job ... using tools such as Ansible, Kickstart, Puppet, etc. + Install, configure, test , and update the Future Operationally Resilient Ground Evolution (FORGE) Framework for… more
    L3Harris (12/26/25)
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