• Senior Mechanical HVAC

    Jacobs (Chantilly, VA)
    …market and every location. We're looking for an experienced, high-energy, HVAC Engineer to join our Building Mechanical team and help deliver innovative ... your contributions will include: * Layout and design of HVAC systems. * Development of the design criteria for...HVAC systems. * Bachelor of Science Degree in Mechanical Engineering. * Adaptability to work within a fast-paced… more
    Jacobs (10/17/25)
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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 ... considerations given for specific domain experience. + Working knowledge of mechanical ( HVAC ) and life safety systems associated with critical environments +… more
    Leidos (09/26/25)
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  • Senior Mechanical Engineer

    TYLin (Fairfax, VA)
    …**Job Summary** TYLin's Rail + Transit team is growing, and we're looking for a Senior Mechanical Project Engineer who is passionate about mechanical ... If you love solving complex engineering challenges and designing high-performance HVAC and ventilation systems for urban transit environments, this is your… more
    TYLin (10/25/25)
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  • Senior Mechanical Engineer

    V2X (Chantilly, VA)
    …their most complex challenges with integrity, respect, responsibility, and professionalism. The Senior Mechanical Engineer will provide design and ... 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

    CMTA, Inc (Fairfax, VA)
    …transition to become a valuable team member within our Energy Solutions group. The Senior Engineer leads all aspects of performance contracts for our clients, ... CMTA, a Legence company, is looking for an experienced Engineer to help expand our reach in new markets....The company specializes in designing, fabricating, and installing complex HVAC , process piping, and other mechanical , electrical,… more
    CMTA, Inc (11/25/25)
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  • Mechanical Engineer

    Fairfax County Sheriff's Office (Fairfax, VA)
    Mechanical Engineer ( Engineer IV)...of $5,000 for new county hires. This position provides senior level leadership and is responsible for the overall ... Print (https://www.governmentjobs.com/careers/fairfaxcounty/jobs/newprint/5104001) Apply  Mechanical Engineer ( Engineer IV) Salary $87,024.91 - $145,041.94… more
    Fairfax County Sheriff's Office (11/02/25)
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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 (10/31/25)
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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 ... Engineer to support the planning, design, and analysis of mechanical systems-primarily Heating, Ventilation, and Air Conditioning ( HVAC )-for secure,… more
    Leidos (11/05/25)
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  • Co-Op (Fall Semester 2025 - Spring Semester 2026)…

    Southland Industries (Dulles, VA)
    …design, such as HVAC , plumbing, etc. + Basic ability to read mechanical and plumbing plans. + Good verbal and written communications skills. + Good computer ... SUMMARY** Watch your engineering designs come to life! As a Design Engineer at Southland Industries, you'll experience the excitement of working on design-build… more
    Southland Industries (11/14/25)
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  • Senior Project Development Engineer

    CMTA, Inc (Fairfax, VA)
    …and career opportunities. **Job Summary:** CMTA, a Legence company, is looking for a Senior Project Development Engineer in the federal market to help in our ... can easily make the transition to become an energy engineer within our Energy Solutions group. **Below are some...The company specializes in designing, fabricating, and installing complex HVAC , process piping, and other mechanical , electrical,… more
    CMTA, Inc (11/01/25)
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  • Senior Electrical Engineer - Data…

    Parsons Corporation (Centreville, VA)
    …redefine what's possible. **Job Description:** Parsons is looking for an amazingly talented Senior level **Data Center Electrical Engineer ** to join our team! In ... performance and reliability. + Collaborate with cross-functional teams, including mechanical engineers, IT professionals, and facility managers, to integrate… more
    Parsons Corporation (09/27/25)
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  • Senior Solar Energy Engineer

    CMTA, Inc (Fairfax, VA)
    …in buildings. The company specializes in designing, fabricating, and installing complex HVAC , process piping, and other mechanical , electrical, and plumbing ... (MEP) systems-enhancing energy efficiency, reliability, and sustainability in new and existing facilities. Legence also delivers long-term performance through strategic upgrades and holistic solutions. Serving some of the world's most technically demanding… more
    CMTA, Inc (11/25/25)
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  • Consultant, Mechanical Engineering (Mission…

    WSP USA (Herndon, VA)
    …Engineering, a member of WSP USA is currently initiating a search for a **Consulting Mechanical Engineer ** for our **Herndon, VA** office **.** As a Consulting ... with us, you will design complex cooling and HVAC systems including air distribution systems, chiller plants, and...relevant post education experience in engineering discipline and prior mechanical design experience. + Engineer in Training… more
    WSP USA (11/26/25)
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  • Lead Controls and Automation Engineer

    WSP USA (Herndon, VA)
    Engineer ** for our kW Herndon VA office. As a Building Automation Controls Engineer with us, you will work with senior engineers to design automation control ... to work in collaborative and mentoring office settings. Our mechanical , electrical, plumbing, fire protection, controls, telecommunications, and security building… more
    WSP USA (10/21/25)
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  • Intern - Design Engineer

    Southland Industries (Dulles, VA)
    …the design team in all aspects of our work. **What you'll do as a Design Engineer Intern:** + Assist Senior Engineers in design tasks as required. + Perform ... candidates to a career in the field of Design Engineering for the Design/Build HVAC , Plumbing and Fire Protection industry. Primary responsibility is to assist… more
    Southland Industries (10/18/25)
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  • Recent Grad/Alumni - Design Engineer I

    Southland Industries (Dulles, VA)
    …design, such as HVAC , plumbing, etc. + Basic ability to read mechanical and plumbing plans. + Good verbal and written communications skills. + Good computer ... seeking seniors and new college graduates driven to excellence with a interest in HVAC design. If you are someone who enjoys working in new environments, on field,… more
    Southland Industries (10/18/25)
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  • Control Systems Engineer (SCADA) - TS…

    Leidos (Reston, VA)
    …characterization process to produce accurate intelligence estimates * Brief senior officials regarding capability trends and analysis **Required Qualifications:** * ... * At least 2 years of control system experience * Working knowledge of mechanical , electrical and life safety systems * Strong background in control systems and… more
    Leidos (10/04/25)
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  • Critical Environments Operator III

    CyrusOne (Sterling, VA)
    …as provided. **​** **Qualifications:** + Journeyman level skills in electrical, mechanical , HVAC /R disciplines. These skills maybe acquired by obtaining ... Under the direction of the Senior Facility Manager this role works as a...an associate's degree or in an electrical or HVAC /R training program or from working in a technical… more
    CyrusOne (10/16/25)
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