• Principal Mechanical Engineer / Sr.…

    Northrop Grumman (Gilbert, AZ)
    …be able and willing to obtain and maintain a DoD Top Secret / SCI clearance **Basic Qualifications - Sr. Principal Mechanical Engineer :** + Bachelor's ... history. Northrop Grumman Space Sector is seeking a **Principal Mechanical Engineer / Sr. Principal Mechanical...able and willing to obtain and maintain a DoD Top Secret / SCI clearance **Preferred Qualifications:**… more
    Northrop Grumman (12/13/25)
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  • Mechanical Engineer

    ManTech (Crane, IN)
    **MANTECH** seeks a motivated, career and customer-oriented ** Mechanical Engineer ** to join our team in **Crane, Indiana. This is an onsite position.** Are you ... of the Navy and Marine Corps? As a core Mechanical Engineer II on our innovative team,...secure environments. **Clearance Requirements:** + Must have a current/active TS / SCI **Physical Requirements:** + The person in… more
    ManTech (12/23/25)
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  • Mechanical Engineer (Starshield)

    SpaceX (Hawthorne, CA)
    Mechanical Engineer (Starshield) Hawthorne, CA Apply SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally ... the ultimate goal of enabling human life on Mars. MECHANICAL ENGINEER (STARSHIELD) Starshield leverages SpaceX's Starlink...technical discipline + Ability and willingness to obtain a Top Secret clearance + Solid understanding and… more
    SpaceX (10/07/25)
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  • Facilities Mechanical Engineer

    Leidos (Chantilly, VA)
    …, submittals, and specifications tailored to site requirements. **Basic Qualifications** + **Current Top Secret SCI security clearance and the ability to ... **Description** **Senior Mechanical Engineer ** Leidos is seeking a...the fiscal year ended January 3, 2025. For more information , visit www.Leidos.com . **Pay and Benefits** Pay and… more
    Leidos (10/27/25)
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  • Lead Mechanical Engineer

    EMCOR Group (Springfield, VA)
    …This position requires an Active Top Secret / Sensitive Compartmented Information ( TS / SCI ) Clearance** **Qualifications** + Currently licensed ... service providers. **Job Summary** EMCOR Government Services is seeking a Lead Mechanical Engineer (ME) to serve as the Subject Matter Expert (SME) for all… more
    EMCOR Group (10/29/25)
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  • Mechanical Engineer w/OCONUS Travel

    Nightwing (Sterling, VA)
    …community, defense, civil, and commercial markets. Nightwing is seeking a highly motivated Mechanical Engineer to join a mature program in the Sterling VA ... location. The qualified Mechanical Engineer will support a very dynamic...analysis for the Customer's mission critical OCONUS facility Clearance: TS / SCI with CI Poly; must be willing… more
    Nightwing (12/05/25)
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  • Scientist, Sr. Mechanical Engineer

    L3Harris (Wilmington, MA)
    …+ Able to obtain and maintain a US Security Clearance Preferred Additional Skills: + Top Secret SCI /DoD clearance preferred + Proficiency in design and 3D ... and cyber domains in the interest of national security. Job Title: Scientist, Sr. Mechanical Engineer - Space Optical Systems Job Code: 30813 Job Location:… more
    L3Harris (11/06/25)
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  • Lead, Mechanisms Mechanical Engineer

    L3Harris (Wilmington, MA)
    …sea and cyber domains in the interest of national security. Job Title: Lead, Mechanical Engineer - Mechanisms Job Code: 31987 Job Location: Wilmington, MA Job ... L3Harris is seeking a highly skilled and dynamic senior Mechanical Engineer to support customer-funded programs and...required + Able to obtain and maintain a US TS / SCI Security Clearance Preferred Additional Skills: +… more
    L3Harris (12/11/25)
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  • Mechanical Engineer

    Leidos (Springfield, VA)
    …teams including electrical, architectural, and structural disciplines. **Basic Qualifications** + Active ** Top Secret SCI clearance** required, with the ... **Description** **Leidos - Multi-Domain Solutions (MDS) Division** **Position: Junior Level Mechanical Engineer ** Leidos and its Multi-Domain Solutions (MDS)… more
    Leidos (10/23/25)
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  • Facilities Mechanical Engineer

    Leidos (Chantilly, VA)
    …regulations. **Basic Qualifications** + **Ability to obtain and maintain a TS / SCI with Polygraph** + Bachelor's degree in Mechanical Engineering with 8-12 ... **Description** Leidos is seeking an experienced Facilities Mechanical Engineer to lead the design,...the fiscal year ended January 3, 2025. For more information , visit www.Leidos.com . **Pay and Benefits** Pay and… more
    Leidos (12/06/25)
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