Principal Mechanical Engineer Jobs in Boston, MA

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Principal Mechanical Engineer

Formlabs

•

Somerville, Massachusetts, USA

Full-time

To reinvent an industry, you have to build the best team. Join Formlabs if you want to bring groundbreaking professional 3D printers to the desktops of every designer, engineer, researcher, and artist in the world. We're excited to build devices that perform remarkably, create beautiful parts, and reflect careful user experience design. You will be architecting, prototyping, building, and designing the hardware systems of our next-generation 3D printers. You will be responsible for key system d
Posted 4 days ago | Updated 3 hours ago

Principal Mechanical Engineer - Tewksbury, MA (On-site)

RTX Corporation

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Tewksbury, Massachusetts, USA

Full-time

Date Posted: 2025-07-17 Country: United States of America Location: MA131: Tewksbury, MA Bldg 1 Assabet 50 Apple Hill Drive Assabet - Building 1, Tewksbury, MA, 01876 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required.Security Clearance: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help
Posted 6 days ago | Updated 3 hours ago

Principal Mechanical Engineer - Section Leader - Tewksbury, MA

RTX Corporation

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Tewksbury, Massachusetts, USA

Full-time

Date Posted: 2025-06-04 Country: United States of America Location: MA131: Tewksbury, MA Bldg 1 Assabet 50 Apple Hill Drive Assabet - Building 1, Tewksbury, MA, 01876 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required.Security Clearance: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help
Posted 50 days ago | Updated 3 hours ago

Principal Mechanical Design Engineer - Tewksbury, MA (On-site)

RTX Corporation

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Tewksbury, Massachusetts, USA

Full-time

Date Posted: 2025-07-06 Country: United States of America Location: MA131: Tewksbury, MA Bldg 1 Assabet 50 Apple Hill Drive Assabet - Building 1, Tewksbury, MA, 01876 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required.Security Clearance: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help
Posted 11 days ago | Updated 3 hours ago

Principal Mechanical Project Engineer - Hybrid

Johnson Controls, Inc.

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Remote or York, Pennsylvania, USA

Full-time

Hybrid work opportunity - Consideration given to applicants within a commutable distance from York, PA. or must be willing to relocate. Build your best future with the Johnson Controls team! Who We Are: As a global leader in smart, healthy and sustainable buildings, our mission is to reimagine the performance of buildings to serve people, places and the planet. Join a winning team that enables you to build your best future! Our teams are uniquely positioned to support a multitude of industries
Posted 10 days ago | Updated 3 hours ago

Mechanical Senior Principal Engineer

Dell Technologies

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Hopkinton, Massachusetts, USA

Full-time

Senior Principal Mechanical Engineer Mechanical Engineering leads and delivers the development of innovative solutions, interfacing with cross-functional teams for server systems, peripherals and infrastructure. Our team conducts the analysis, feasibility studies and testing of mechanical products, instruments, subassemblies and packaging for new and existing products - and then oversees the introduction of design changes to the manufacturing organizations. As AI growth is accelerating, Dell T
Posted 44 days ago | Updated 3 hours ago

Principal Engineer - Mechanical Engineering (Hybrid)

RTX Corporation

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Remote or Windsor, Connecticut, USA

Full-time

Date Posted: 2025-07-16 Country: United States of America Location: 02: Building 02 Windsor Locks One Hamilton Road, Windsor Locks, CT, 06096 USA Position Role Type: Hybrid U.S. Citizen, U.S. Person, or Immigration Status Requirements: Security Clearance: None/Not Required Looking to make an impact in engineering? Join our Hydro-Mechanical, Actuation & Pneumatic Valve Design Group as a Mechanical Design Engineer. You'll play a key role in developing innovative solutions for critical component
Posted 5 days ago | Updated 3 hours ago

Lead Opto-Mechanical Engineer

Motion Recruitment Partners, LLC

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Boston, Massachusetts, USA

Full-time

Our client is a leading manufacturer of laser systems serving the defense and industrial sectors. As their team continues to grow, they are seeking a skilled Lead Opto-Mechanical Engineer to spearhead the design and development of advanced laser technologies. Key Responsibilities: Lead the design, development, and validation of opto-mechanical assemblies for advanced laser systems, including optical mounts, alignment mechanisms, beam delivery components, and thermal management solutions.Conduct
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Posted 11 days ago | Updated moments ago

Lead Mechanical Engineer

Motion Recruitment Partners, LLC

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Boston, Massachusetts, USA

Full-time

Our client, an innovative diagnostic medical device company, is seeking a Lead Mechanical Engineer to join their team. This individual will play a critical role in leading the design, development, and refinement of mechanical systems for next-generation diagnostic products. The company is committed to transforming point-of-care diagnostics and is looking for someone who thrives in a collaborative, fast-paced environment. This is an excellent opportunity for an experienced mechanical engineer who
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Posted 45 days ago | Updated moments ago

Lead Mechanical Engineer - Life Sciences

Cushman & Wakefield

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Cambridge, Massachusetts, USA

Full-time

Job Title Lead Mechanical Engineer - Life Sciences Job Description Summary Primary Purpose of Position: C&W Services customer is beginning a journey or purchasing and ground up construction of building in the life science sector. We are looking for someone looking to take on a new challenge and begin to assist with building a life sciences engineering team. The right candidate must work well with a large team, give direction to more junior staff, and most importantly train the staff in the life
Posted 60+ days ago | Updated 3 hours ago

Staff Mechanical Engineer R&D

Johnson & Johnson

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Remote or Santa Clara, California, USA

Part-time

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn m
Posted 2 days ago | Updated 3 hours ago

Lead Mechanical Engineer 1 - Nuclear

Sargent & Lundy LLC.

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Remote

Full-time

Description You will be involved in nuclear power plant systems design, including preparation or review of: Modification packages for operating nuclear power plantsFunctional mechanical drawings and/or drawings for nuclear power plant systemsEngineering analyses and evaluations to support modifications and operation of plant systemsTechnical specifications and procurement documents for plant equipmentVendor bid evaluations for plant equipmentStudies and options evaluations for modifications to
Posted 5 days ago | Updated 3 hours ago

Lead Mechanical Engineer 2 - Government Services

Sargent & Lundy LLC.

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Remote

Full-time

Description This is a remote position with the expectation of frequent travel to a client site near Oak Ridge, Tennessee. This is a mid-level design engineering position that offers a variety of challenging opportunities in Mechanical Engineering and will provide an excellent opportunity for career advancement: Lead Mechanical design engineering efforts on a multi-disciplined project design team and apply mechanical engineering expertise to the design and analysis of special purpose equipment,
Posted 8 days ago | Updated 3 hours ago

Lead Mechanical Engineer 2 - Government Services

Sargent & Lundy LLC.

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Remote or Oak Ridge, Tennessee, USA

Full-time

Description This is a remote position with the expectation of frequent travel to a client site near Oak Ridge, Tennessee. This is a mid-level design engineering position that offers a variety of challenging opportunities in Mechanical Engineering and will provide an excellent opportunity for career advancement: Lead Mechanical design engineering efforts on a multi-disciplined project design team and apply mechanical engineering expertise to the design and analysis of special purpose equipment,
Posted 15 days ago | Updated 3 hours ago

Lead Mechanical Engineer 1 (Power Uprates) - Nuclear

Sargent & Lundy LLC.

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Remote

Full-time

Description Our electric power generation clients are seeking to increase the power output of their existing power plants to meet the electric demands. This is expanding work in the nuclear industry. You will work on major systems, equipment and plant process in the following areas: Perform consulting level work for power uprates in the nuclear industry.Interface with clients and project teams to present technical discussions and project status.Develop engineering proposals and cost estimates.M
Posted 17 days ago | Updated 3 hours ago

Staff Mechanical Engineer - R&D Robotics

Johnson & Johnson

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Remote or Santa Clara, California, USA

Full-time

At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity. Learn m
Posted 50 days ago | Updated 3 hours ago

Lead generator mechanical engineer

GE Vernova

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Remote

Full-time

Job Description Summary The Lead Generator Mechanical Engineer will be responsible for the design of hydro generator mechanical components for installed based projects. He/she will also be responsible to provide technical support for supply chain and site activities related to hydro generators. Job Description About Us: We are a purpose-built company leading a new era of energy - electrifying the world while simultaneously working to help decarbonize it! Our culture is built on inclusivity, d