• Mechanical Engineer 3

    M. C. Dean (Vienna, VA)
    …with increasing project size, scope and complexity, the need to recruit a Mechanical Engineer for the Critical Infrastructure solutions (CIS) business unit. ... Tysons, Virginia, and employs more than 5,800 professionals who engineer and deploy automated, secure, and resilient power and...Matter Expert in the areas of design and specify mechanical and plumbing systems including but not limited to… more
    M. C. Dean (11/28/25)
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  • Facilities Mechanical Engineer

    Leidos (Chantilly, VA)
    **Description** **Senior Mechanical Engineer ** Leidos is seeking a seasoned and innovative Senior Mechanical Engineer to lead the design, maintenance, ... and configuration management of complex building mechanical systems across a secure site. This role demands...experience, or Master's with 6-10 years. + **Registered Professional Engineer (PE)** in good standing or **ability to obtain… more
    Leidos (10/27/25)
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  • Facilities Mechanical Engineer

    Leidos (Chantilly, VA)
    **Description** Leidos is seeking an experienced Facilities Mechanical Engineer to lead the design, maintenance, and configuration management of building ... mechanical systems across mission-critical sites. This role demands deep...with Facility Management Control Systems (FMCS). + Active Professional Engineer (PE) license or ability to obtain licensure within… more
    Leidos (12/06/25)
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  • Specialist, Aerospace Mechanical

    L3Harris (Ashburn, VA)
    …cyber domains in the interest of national security. Job Title: Specialist, Aerospace Mechanical Engineer Job Code: 31930 Job Location: Ashburn, VA Job Schedule: ... candidates Job Description: We are seeking a highly skilled Mechanical Engineer to join our dynamic team...to obtain and maintain DoD security clearances + Minimum 3 years' experience in mechanical design using… more
    L3Harris (12/10/25)
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  • Mechanical Engineer

    Leidos (Chantilly, VA)
    **Description** ** Mechanical Engineer - Mission-Critical Facilities Design** Leidos is seeking a driven and detail-oriented Junior level Mechanical ... to support the planning, design, and analysis of mechanical systems-primarily Heating, Ventilation, and Air Conditioning (HVAC)-for secure,...this job requisition will remain open for at least 3 days with an anticipated close date of no… more
    Leidos (12/24/25)
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  • Senior Mechanical Engineer - active…

    V2X (Chantilly, VA)
    …complex challenges with integrity, respect, responsibility, and professionalism. The Senior Mechanical Engineer will provide design and implementation of various ... power, mechanical systems, fire protection, construction, etc.) + Professional Engineer (PE) Registration desired. + Education: + Bachelor's degree in … more
    V2X (11/25/25)
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  • Senior Mechanical Engineer - Flight…

    RTX Corporation (Sterling, VA)
    …for a security clearance​ **Security Clearance:** DoD Clearance: Secret **Senior Mechanical Engineer ** **- Flight Simulation (Onsite)** **Description:** Senior ... assigned scope of work + May Lead cross-functional teams ( Mechanical and Electrical) in a Hardware Project Engineer...an Advanced Degree in a related field and minimum 3 years of experience or in absence of a… more
    RTX Corporation (11/06/25)
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  • Senior Mechanical Engineer

    Bechtel Corporation (Reston, VA)
    …long-lasting energy future for generations to come. # Job Summary: As a Senior Mechanical Engineer , you will support the development of Mechanical systems ... or B31. 3 and/or international equivalents. + Extensive knowledge of mechanical engineering work processes, procedures, and specifications. + Excellent oral and… more
    Bechtel Corporation (12/15/25)
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  • Senior Mechanical Engineer

    Leidos (Reston, VA)
    **Description** The Mission Solutions Business Area at Leidos is looking for a Mechanical Engineer to join our Reston, VA based team. The successful candidate ... + Model different aspects of a facility to include mechanical , electrical, and structural components within industry software packages...this job requisition will remain open for at least 3 days with an anticipated close date of no… more
    Leidos (12/26/25)
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  • Traveling Commissioning Engineer III…

    Quality Technology Services, LLC (Ashburn, VA)
    The ** Mechanical Commissioning Engineer L3** is responsible for but not limited to Level 3 , 4 and 5 commissioning of base building systems and components of ... federal customer contracts **PREFERRED QUALIFICATIONS** + Firm understanding of both mechanical and electrical equipment, systems and design related to data centers.… more
    Quality Technology Services, LLC (12/03/25)
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  • Mechanical Engineer - Multiple…

    Leidos (Reston, VA)
    …The Mission Solutions Business Area at Leidos is building a team of Mechanical Engineers in our Reston, VA based office. The successful candidates will work ... + Model different aspects of a facility to include mechanical , electrical, and structural components within industry software packages...this job requisition will remain open for at least 3 days with an anticipated close date of no… more
    Leidos (12/20/25)
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  • Engineer 3

    M. C. Dean (Vienna, VA)
    3 . Coordinate device locations with other trades, including mechanical , plumbing, or other (Architectural, Lab, Medical, Kitchen, etc), including interpreting ... MC Dean, you will join forces with more than 5,100 professionals who engineer and deploy automated, secure, and resilient power and technology systems; and deliver… more
    M. C. Dean (11/26/25)
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  • Telecommunications Engineer 3

    M. C. Dean (Vienna, VA)
    …and changing the world for the better. The Mission Critical **Telecommunications Engineer 3 ** position involves the design, coordination, and implementation of ... at MC Dean, you will join forces with more than 5,800 professionals who engineer and deploy automated, secure and resilient power and technology systems; and deliver… more
    M. C. Dean (11/26/25)
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  • Process Mechanical Intern - Summer

    Jacobs (Reston, VA)
    …to engage in the roles and responsibilities of an infrastructure focused process mechanical engineer . You will also collaborate with our CAD designers to ... This role is for a fulltime summer Process Mechanical Engineering Intern located in Reston or Silver...a valid driver's license. Ideally, you'll also have: * 3 .0 GPA minimum * Self-driven time management and organizational… more
    Jacobs (10/16/25)
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  • Control Engineer 3

    M. C. Dean (Vienna, VA)
    Overview **Job Title:** Controls Engineer 3 **Location:** Tysons, VA Responsibilities **Job Description:** Originate design documents for small projects and in ... in Electrical Engineering, Mechanical Engineering, or a related field **-plus-** 2 years of experience as a Controls Engineer 3 or in any related occupation more
    M. C. Dean (11/28/25)
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  • SURTASS Operations & Maintenance (O&M) Technician…

    V2X (Reston, VA)
    …streamline logistics, and enhance readiness. Aligned around a shared purpose, our $ 3 .9B company and 16,000 people work alongside our clients, here and abroad, ... A few of these programs include: + Fleet Systems Engineer Team (FSET) program located in key ports around...Major Job Activities: As an O&M Technician Crewmember - Electro- Mechanical Specialist of the SURTASS team, you will be… more
    V2X (12/04/25)
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  • Engineer 3

    M. C. Dean (Vienna, VA)
    …generation of technical leaders in electrical, engineering, and cybersecurity industries. The ** Engineer 3 ** manages all engineering aspects of fire detection ... Qualifications + Bachelor's degree in Engineering in Fire Protection, Industrial, Mechanical , Electrical or related discipline is required with 5+ years of… more
    M. C. Dean (11/28/25)
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  • Mechanical Project Manager

    Leidos (Bethesda, MD)
    **Description** **Leidos** has a new and exciting opportunity for a ** Mechanical Project Manager** in our **National Security Sector's (NSS) Cyber & Analytics ... a difference in National Security!** **Job Summary:** Leidos is looking for a mechanical project manager to support the Office of Director of National Intelligence… more
    Leidos (12/19/25)
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  • Engineer Professionals- Ongoing Talent…

    V2X (Reston, VA)
    …positions, including but not limited to: Entry-Level (0- 3 Years Experience) + Systems Engineer + Mechanical Engineer + Electrical Engineer + Civil ... Engineer + Software Engineer + Field Engineer Mid-Level ( 3 -7 Years Experience) + Project... Engineer + Engineering Manager + Principal Electrical Engineer + Chief Mechanical Engineer more
    V2X (11/27/25)
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  • Stationary Engineer - Bolger Center - Local…

    ARAMARK (Potomac, MD)
    …Potomac, MD, US, 20854 Career Area: Facilities Description: **Job Description** A Stationary Engineer Grade 3 is responsible for the safe and efficient ... lifting, bending, pushing, pulling and/or extended walking and standing. + Maryland Stationary Engineer License Grade 3 + Certification in HVAC, plumbing, or… more
    ARAMARK (12/16/25)
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