Mechanical Engineer Intern/Co-op Fall 2026 CMTA, IncMechanical Engineer Intern/Co-op Fall 2026Arlington, VAPursuing a Bachelor of Mechanical Engineering or Architectural Engineering, preferably a sophomore (2nd year), or junior (3rd year), • Strong interest in Building Systems Mechanical Engineering, • AutoCAD and REVIT experience preferred, • Strong interpersonal and communication skills, • Proficiency with Microsoft Word and Excel, • Ability to work both independently and with a team, • Ability to work full time in our office throughout the co-op term, • Ability to travel locally for job site inspections, field work, etc. 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.
Mechanical Engineer/HVAC Engineer Exigent MechanicalMechanical Engineer/HVAC EngineerColumbia, Maryland7-10 Years of MEP Experience: Proven success in commercial HVAC systems design and energy engineering, with deep expertise in mechanical, plumbing, and fire protection systems. Lead the mechanical engineering and energy optimization initiatives across Exigent's portfolio, focusing on commercial HVAC systems design and building performance enhancement.
Mechanical Project Designer | Germantown, MD IMEG ConsultantsMechanical Project Designer | Germantown, MDGermantown, MarylandIn this role, you will lead design efforts as a project manager or lead engineer for low to moderate complexity projects, collaborate with senior staff on larger and high complexity projects, and provide engineering solutions and advice to clients. Collaborate with a seasoned multidisciplinary team of Professional Engineers, LEED Accredited Professionals, energy modeling experts, CFD specialists, lighting designers, commissioning professionals, and healthcare facility design experts.
Mechanical Engineer OTJMechanical EngineerWashingtonMechanical Engineer (Hybrid) Job Description: OTJ is looking for an experienced Mechanical Engineer who is PE certified in Washington, D.C. This role focuses on the planning, design, and execution of mechanical systems for a wide range of building and infrastructure projects. Because this position may support federal government projects that require U.S. citizenship as a bona fide occupational qualification, we are unable to move forward with candidates who do not meet this requirement.
Mechanical Engineer - TS/SCI SHINE SystemsMechanical Engineer - TS/SCIWashington, DCSHINE Systems is building a talent pool of Mechanical Engineers to support future Intelligence Community customer missions. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.
Senior Mechanical Engineer Kimmel & AssociatesSenior Mechanical EngineerWashington, DC$140,000–$150,000Through innovative HVAC engineering, electrical upgrades, building automation systems, preventative maintenance, and energy optimization, the company helps commercial and institutional clients reduce operating costs while improving building performance and environmental impact. This is an excellent opportunity for a technically strong engineer who enjoys solving challenging engineering problems, mentoring junior staff, and collaborating with multidisciplinary teams throughout the entire project lifecycle—from conceptual design through construction.
Senior Mechanical Engineer AxonSenior Mechanical EngineerSterling, VA$90,000–$144,000 / yearour passionate leadership and cross-functional collaboration with product managers, electrical engineers, industrial designers, and manufacturing teams is vital to the success of the team and ensuring the safety of the general public for generations to come. If you receive a suspicious offer or outreach from an email address that is not @axon.com, or if you are asked for sensitive personal information (bank details, Social Security Number) prematurely, please ignore the message and report it to recruitingops@axon.com.
Mechanical Engineer II AxonMechanical Engineer IISterling, VA$90,000–$144,000 / yearour passionate leadership and cross-functional collaboration with product managers, electrical engineers, industrial designers, and manufacturing teams is vital to the success of the team and ensuring the safety of the general public for generations to come. If you receive a suspicious offer or outreach from an email address that is not @axon.com, or if you are asked for sensitive personal information (bank details, Social Security Number) prematurely, please ignore the message and report it to recruitingops@axon.com.
Senior Mechanical Design Engineer KBRSenior Mechanical Design EngineerWashington, DC$150,000–$190,000 / yearKBR is seeking a Senior Mechanical Design Engineer with strong CAD proficiency and leadership experience to join our growing team of engineers supporting cutting-edge defense programs. KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities.
Mechanical Engineer, AI Integration XometryMechanical Engineer, AI IntegrationNorth Bethesda, MD$82,000–$97,000 / yearWorking closely with our Data Science and Product teams, you will act as a hands-on domain expert to translate physical manufacturing constraints, 2D technical drawings, and 3D geometry into structured inputs that train and improve Xometry’s proprietary AI engine. Geometric Feature Analysis: Analyze native 3D CAD models to identify complex geometric topologies, specific features (such as deep pockets, complex threads, thin walls), and GD&T annotations to verify that Xometry's automated engine is reading them accurately.
Mechanical Engineer Salas O'BrienMechanical EngineerBethesda, MarylandOur specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more. Provide engineering design, evaluation, and planning of mechanical systems for healthcare, science & technology, education, and commercial projects while supporting project teams through various phases of project development from concept design through construction.
Junior Mechanical Engineer - TS/SCI Polygraph Required LeidosJunior Mechanical Engineer - TS/SCI Polygraph RequiredReston, VirginiaMEP Systems Knowledge: Understanding of Mechanical, Electrical, and Plumbing (MEP) system design, integration, and operational functionality within complex industrial or military facilities, including specialized containment systems, filtration systems, and backup power infrastructure. Two or more years of field experience working with industrial HVAC systems, including air-cooled and water-cooled chillers, condensers, cooling towers, air handlers, heat exchangers, boilers, and related equipment.
Mechanical Engineer - TS/SCI Polygraph Required LeidosMechanical Engineer - TS/SCI Polygraph RequiredReston, VirginiaMEP Systems Knowledge: Strong multidisciplinary understanding of Mechanical, Electrical, and Plumbing (MEP) system design, integration, and operational functionality within complex industrial or military facilities, including specialized containment systems, filtration systems, and backup power infrastructure. Five or more years of field experience working with industrial HVAC systems, including air-cooled and water-cooled chillers, condensers, cooling towers, air handlers, heat exchangers, boilers, and related equipment.
Mechanical Engineer DewberryMechanical EngineerFairfax, Virginia$95,000–$122,000 / yearFull timeProject types include office buildings; interior renovation and fit-outs; federal, state, and local facilities including secure government agencies, courthouses, police stations, government office buildings, and other specialty facilities; facilities assessments; energy audits; base-building renovations; LEED services; technical reports; and other mechanical engineering tasks. Primary focus will be on the mechanical systems for buildings; however, this position may also include assisting with other building systems and the construction process in the various engineering disciplines practiced: mechanical, electrical, plumbing, fire protection, and construction services; leading to the growth of a well-rounded MEP engineer.
Senior Mechanical Engineer, Data Centers - Remote (U.S.) AECOMSenior Mechanical Engineer, Data Centers - Remote (U.S.)Arlington, VARemote$170,000–$200,000 / yearCooling System Selection:** Selecting appropriate air/water side cooling systems for data centers, including Fan wall units, computer room air handlers (CRAHs), chilled water systems, DX systems and CRAC units, in-row cooling, and containment solutions, based on the specific cooling requirements of the data center and the criticality of the equipment. + **Coordination with Electrical and Mechanical Systems**: Collaborating with electrical engineers and mechanical engineers to integrate the heat rejection and HVAC system seamlessly with the electrical infrastructure, UPS systems, emergency power systems, fire suppression systems, and other critical infrastructure components.
Mechanical Engineer, Data Centers - Remote (U.S.) AECOMMechanical Engineer, Data Centers - Remote (U.S.)Arlington, VARemote$150,000–$195,000 / yearCooling System Selection:** Selecting appropriate air/water side cooling systems for data centers, including Fan wall units, computer room air handlers (CRAHs), chilled water systems, DX systems and CRAC units, in-row cooling, and containment solutions, based on the specific cooling requirements of the data center and the criticality of the equipment. **ReqID:** J10151918 **Business Line:** B&P - Buildings & Places **Business Group:** DCS **Strategic Business Unit:** East **Career Area:** Engineering **Work Location Model:** Remote **Compensation:** USD 150000 - USD 195000 - yearly
Project Manager-Mechanical Construction Kimmel & AssociatesProject Manager-Mechanical ConstructionAshburn, VA$120,000–$150,000The company has built a reputation for delivering complex mechanical, plumbing, process piping, HVAC, and high-purity systems for leading organizations across the pharmaceutical, life sciences, microelectronics, healthcare, mission critical, laboratory, hospitality, and advanced manufacturing sectors. The Project Manager serves as the primary leader for assigned projects, coordinating cross-functional teams while maintaining strong relationships with clients, subcontractors, suppliers, and internal stakeholders.
Mechanical Engineer Nenni and AssociatesMechanical EngineerFairfax, VirginiaJob Duties and Responsibilities: Collaborate and mentor junior engineers to design the mechanical and plumbing components of energy-efficient buildings. Our client is a very well-established ESCO who is currently seeking a Senior Mechanical Engineer to join their team within the Mid Atlantic market!
Senior Mechanical Engineer Applied Research Associates, Inc.Senior Mechanical EngineerReston, VA$110,000–$150,000 / yearThe Capabilities, Analysis and Development (CAD) division of Applied Research Associates, Inc. (ARA) has an outstanding opportunity for an exceptional Senior Mechanical Engineer to support on-going research and development efforts and develop new business in technologies for functional characterization of WMD facilities and their associated design. COMPANY INFORMATION: Applied Research Associates, Inc. is an employee-owned international research and engineering company recognized for providing technically superior solutions to complex and challenging problems in the physical sciences.
Senior Mechanical Engineer Heven AeroTechSenior Mechanical EngineerWashingtonThis role collaborates cross-functionally to solve challenging problems, supports engineering excellence through mentorship, and may influence project direction through informal technical leadership or interaction with customers, suppliers, and manufacturing partners. Lead the design, development and integration of new functional payloads and designs while assessing complex airframe structures, subsystems, and tooling across analysis, design, prototype and production stages.