Mechanical Engineer II/Senior Rocket Lab CorporationMechanical Engineer II/SeniorSilver Spring, MD$87,000–$125,000 / yearTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Our Space Systems team builds everything from complete spacecraft and precision payloads to the components and subsystems that allow them to thrive in space, including solar panels, flight software, star trackers, optical systems, separation systems, radios, and more.
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.
NewSenior Mechanical Engineer – Washington, DC Unity Staffing Services, LLCSenior Mechanical Engineer – Washington, DCWashington, DCThis pivotal role demands advanced proficiency in Revit software, a valid Professional Engineer (PE) license, and a proven track record of success in multifamily development projects. The position offers a flexible hybrid work arrangement, requiring the successful candidate to be on-site or in the field four days each week, with the option to work remotely one day.
Principal Mechanical Engineer SME - TS/SCI Polygraph Required LeidosPrincipal Mechanical Engineer SME - TS/SCI Polygraph RequiredReston, VirginiaMEP Systems Expertise: 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. The successful candidate will leverage extensive engineering expertise to analyze facility designs, spatial layouts, operational workflows, and supporting infrastructure to determine functional capabilities and mission relevance.
Construction Manager – Mechanical Engineer (Plumbing) - Site Lead SteerBridgeConstruction Manager – Mechanical Engineer (Plumbing) - Site LeadWashington, District of ColumbiaResponsibilities include maintaining comprehensive awareness of project status, proactively identifying and communicating risks, coordinating closely with the Government Contracting Officer's Representative (COR), supporting project execution, mentoring team members, ensuring timely completion of administrative requirements such as timekeeping and leave coordination, and fostering strong working relationships with the VA, contractors, and project stakeholders. The Construction Manager – Mechanical Engineer (Plumbing) (CM-MP) provides specialized mechanical engineering and construction management support for a diverse portfolio of construction, renovation, infrastructure modernization, utility, and facility improvement projects at Veterans Affairs Medical Facilities.
NewMechanical Engineer Newton LLCMechanical EngineerRiverdale, MDAt Newton, we provide full-cycle engineering and product development support — from creating high-precision pointing mechanisms for spacecraft to solving shock isolation challenges for strategic operations; we’re there, every step of the way. Perform hand calculations to determine order of magnitude sizing for structural design elements (e.g., structural members in the load path, fastener size and quantity, etc.).
Space Science Instrumentation Mechanical Engineer Johns Hopkins Applied Physics LaboratorySpace Science Instrumentation Mechanical EngineerLaurel, MarylandFull timeOur programs support NASA's science portfolio, including missions such as Parker Solar Probe, DART, Europa Clipper, Dragonfly, and future flagship missions, while also advancing innovative technologies and operational capabilities for Department of War and other national security space missions. We are seeking a Mechanical Engineer ready to take on new challenges as part of our team leading the design, development, integration, and delivery of spaceflight hardware for both civil space exploration and national security missions.
Telescope Opto-Mechanical Engineer LV8D SolutionsTelescope Opto-Mechanical EngineerChantilly, VAThe successful candidate will support the maturation of advanced telescope technologies, manage cross-vendor interface coordination efforts, and contribute to the development of common engineering approaches that enhance interchangeability across future spacecraft builds. LV8D Solutions is an elite Systems Engineering and Technical Advisory (SETA) company that delivers advanced systems engineering, integration, acquisition, mission operations, network communications, and cybersecurity support to our defense and intelligence customers.
Mechanical Engineer Parsons Commercial Technology Group Inc.Mechanical EngineerHerndon, VA$88,400–$154,700 / yearParsons' extensive experience in the cleared space, combined with your technical knowledge, will propel your career forward with an opportunity to work in an exciting unconventional access mission where our teams are focused on advancing capability and technical support for cyber operations. What Desired Skills You'll Bring: Experience in rugged chassis enclosure design for electronics hardware, including mil-spec connectors, coatings, and hardware for MIL-810 applications.
Mechanical Engineer, P.E. - Accident Reconstruction EFI GlobalMechanical Engineer, P.E. - Accident ReconstructionColumbia, MDRemote$120,000–$130,000 / yearOver the last four decades, we have grown from a boutique firm specializing in handling insurance fraud and arson cases and providing expert witness testimony, into a recognized global leader in engineering failure analysis, origin-and-cause investigations, environmental consulting, laboratory testing and specialty consulting. #MechanicalEngineer #AccidentReconstruction #VehicleAccidentReconstruction #ForensicEngineering #ProfessionalEngineer #EFIGlobal #IndustryLeader #ProfessionalGrowth.
Sr. Mechanical Engineer - Avionics Mechanical Packaging - TeraWave Blue OriginSr. Mechanical Engineer - Avionics Mechanical Packaging - TeraWaveWashingtonand/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing (CDL drivers only), vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. You will own mechanical packaging for the Power Management and Distribution (PMAD) Line Replaceable Unit (LRU), including enclosure, card retention, thermal paths, connector access, mounting interfaces, serviceability, mass optimization, producibility, and integration flow.
Staff Mechanical Engineer Applied Research Associates, Inc.Staff Mechanical EngineerIndian Head, MD$87,000–$115,000 / yearBecause continuous proximity to the team and operations is an essential function of the position, certain workspace modifications-such as isolating the worker in a quiet, dimly lit, or entirely private office-cannot be accommodated while fulfilling the core responsibilities of this role. Engineers will locate, review, and verify Technical Data Packages (TDP), MIL SPEC/MIL STDs and resolve technical issues by submitting and tracking Request for Variance(s) for OR-99s, and ORDALTS.
Senior Mechanical Engineer Marathon TSSenior Mechanical EngineerLorton, VAProvide hands-on leadership for mechanical design, integration, and product support activities across pre-production, production, and sustainment programs. Self-motivated mindset with a demonstrated ability to build capability and deliver results in environments where processes, infrastructure, and support systems are still maturing.
Heavy Mechanical Engineer (Central Systems) Cornerstone ConciliumHeavy Mechanical Engineer (Central Systems)New Carrollton, MD$45.57–$59.61 / hourWe are seeking a Heavy Mechanical Engineer to join our team focused on designing, developing, and maintaining central systems for heavy machinery. Collaborating with cross-functional teams to ensure seamless integration of central systems with overall machine design.
Mechanical Engineer Royal Oak MI AHU Technologies IncMechanical Engineer Royal Oak MIWashington, DCRemoteFull timeThe ideal candidate will work closely with electrical, architectural, and external engineering teams to deliver fully coordinated HVAC and plumbing system designs across all project phases. This role supports healthcare, institutional, and commercial projects and is responsible for producing stamped construction documents and coordinating multidisciplinary building systems.
Senior Mechanical Engineer - District Utilities Wiley|WilsonSenior Mechanical Engineer - District UtilitiesAlexandria, VAAlexandria, Virginia, District Utilities, District Energy, Steam Systems, Hot Water Systems, Chilled Water Systems, Mechanical Engineering, PE License, Infrastructure Design, System Optimization, Field Investigations, Technical Leadership, Engineering Analysis, Utility Networks, Decarbonization, Sustainable Energy Solutions, Geothermal. Furthermore, we prioritize inclusivity with benefits such as 80 hours of parental leave for the birth of a child or newly adopted child, a hybrid work schedule to accommodate various needs, and for roles requiring travel, we ensure accommodations for individuals with disabilities.
NewMechanical Engineer Salas O'Brien, Inc.Mechanical EngineerBethesda, MD$105,000–$125,000 / yearPart timeOur 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.
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.
NewData Center Mechanical Engineer H5 Data CentersData Center Mechanical EngineerChantilly, VAExperience in Data Center design, construction and commissioning including water cooled chiller plants, complex mechanical distribution systems, raised floor cooling system, automation, and control systems. Lead, review, and approve designs for data center upgrades which improve availability and efficiency, in addition to capacity increases and monitoring.
Senior Mechanical Engineer - TS/SCI Polygraph Required LeidosSenior Mechanical Engineer - TS/SCI Polygraph RequiredReston, VirginiaMEP Systems Expertise: 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. The successful candidate will leverage strong engineering expertise to analyze facility designs, spatial layouts, operational workflows, and supporting infrastructure to determine functional capabilities and mission relevance.