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410 mechanical design engineering intern jobs found

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mechanical design engineering intern California
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AE
Mar 12, 2026
Intern
Mechanical Engineering Intern
Antora Energy San Jose, CA, USA
Antora builds and deploys thermal energy storage to power always-on industrial operations and data centers with low-cost energy. Factory-built in California, Antora's thermal batteries deliver reliable and cost-effective heat and power for industrial loads of any size. Antora is electrifying global industry while supporting U.S. manufacturing jobs, lowering costs for energy consumers, and enhancing the competitiveness of American industry. We are growing our company with people who put team and mission first, value connection through laughter and joy, and build with humility and openness. We are committed to continue building a diverse, passionate, and creative team dedicated to a future where every industrial facility, everywhere on earth, is powered by abundant, clean, low-cost energy. Position Summary Antora is seeking a highly-motivated Mechanical Design Engineering Intern to join our mission-driven team within the Mechanical Design Engineering organization (spanning...
AE
Mar 13, 2026
Full time
Design Engineer
$40.00 - $50.00 hourly
ACCO Engineered Systems San Diego, CA, USA
Job Description General Job Description: This position is responsible for the delivery of engineering services, from conceptual design through construction completion of HVAC, Plumbing, and other contract services offered by ACCO Engineered Systems. Essential Duties & Responsibilities Demonstrates understanding of a complete construction set of documents and able to execute these projects with little supervision Complete code-required energy compliance and LEED documentation Conduct engineering calculations, energy analysis, economic analysis, selection and layout of equipment, and duct & piping system design for HVAC, Plumbing, and other building systems for which ACCO offers expertise Understanding of applications engineering including psychrometrics, refrigeration, acoustics, and controls systems Assist with coordination of design and installation with Project Management, Construction and Service departments, Controls, and other trade partners. Field...
Le
Mar 13, 2026
Intern
Engineering Intern - Therma
$25.00 hourly
Legence San Jose, CA, USA
Therma, a Legence company For over 50 years, Therma has continued to redefine the mechanical construction landscapes in California. Renowned for outstanding client service and attention to detail, we balance innovative, facility-specific solutions with a pragmatic, cost-conscious approach. Today, the firm employs more than 1,100 people in 3 regional offices, and its clients represent a diverse range of market sectors, including Biopharmaceutical, Education, Healthcare, Food & Beverage, Commercial, Industrial and Data Center facilities. Our culture is open, innovative, collaborative, and fun - all reflected in recognition of Therma as a #1 Best Place to Work on multiple occasions. We create an environment that empowers & challenges employees, giving them the greatest opportunity to succeed. Location: San Jose, California (In office position) Essential Duties: Assist engineering staff with various project tasks, including researching, compiling and evaluation...
Ra
Mar 13, 2026
Intern
Manufacturing Engineering Intern (Summer 2026)
Ralliant Hollister, CA, USA
Job Description PacSci EMC, a Ralliant Operating Company, delivers innovative energetic material solutions that enable mission success across aerospace and defense. As part of our commitment to developing future talent, we are seeking a Manufacturing Engineering Intern for Summer 2026, with probability of part time thereafter . In this role, you will gain hands-on experience in a fast-paced, highly regulated environment while supporting engineering and manufacturing initiatives. You will collaborate with engineers, technicians, and cross-functional teams on real-world projects that drive operational excellence, product quality, and continuous improvement. Key Responsibilities Support the development and completion of compliance matrices. Assist in preparing and updating PFMEA documentation. Contribute to risk assessments for manufacturing processes. Participate in the design of tooling to support production. Conduct process development experiments and report...
Ri
Mar 13, 2026
Intern
Engineering Intern - Mechanical Modeling
$33.00 - $51.00 hourly
Rivian Palo Alto, CA, USA
About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it for future generations. Role Summary Internship Term: Summer 2026 Rivian internships are experiences optimized for student candidates. To be eligible, you must be an undergraduate or graduate student in an accredited program during the internship term with an expected graduation date between December 2026 through June 2028. Rivian's Internship Program requires active student enrollment. Information regarding your expected degree completion date is collected solely to verify...
Co
Mar 13, 2026
Intern
R&D Engineering Intern (Medical Devices)
Cordis Irvine, CA, USA
Overview Selution, in partnership with Cordis, specializes in the development of ground-breaking technology and commercialization of advanced drug device combination products for the treatment of coronary and peripheral artery disease. Our mission is to revolutionize healthcare by creating next-generation solutions that address unmet and critical medical needs. Responsibilities We are seeking a highly motivated R&D Engineering Intern to support the research, design, and development of innovative medical devices. This role offers hands-on experience in early-stage product development, prototyping, and testing within a regulated medical device environment. The intern will work closely with cross-functional teams to help translate user needs and design concepts into functional prototypes and validated designs that improve patient outcomes. Key Responsibilities Assist with the design and development of medical device concepts, components, and subsystems Support...
OC
Mar 12, 2026
Intern
Manufacturing Engineering Intern
Ortho Clinical Diagnostics Rutherford, CA, USA
The Opportunity QuidelOrtho unites the strengths of Quidel Corporation and Ortho Clinical Diagnostics, creating a world-leading in vitro diagnostics company with award-winning expertise in immunoassay and molecular testing, clinical chemistry and transfusion medicine. We are more than 6,000 strong and do business in over 130 countries, providing answers with fast, accurate and consistent testing where and when they are needed most - home to hospital, lab to clinic. Our culture puts our team members first and prioritizes actions that support happiness, inspiration and engagement. We strive to build meaningful connections with each other as we believe that employee happiness and business success are linked. Join us in our mission to transform the power of diagnostics into a healthier future for all. The Role QuidelOrtho is looking for a Manufacturing Engineering Intern that wants to spend their summer working towards our mission: Changing Lives, One Test at a Time. Interns...
Ra
Mar 12, 2026
Intern
Manufacturing Engineering Intern (Summer 2026)
Ralliant Hollister, CA, USA
Job Description PacSci EMC, a Ralliant Operating Company, delivers innovative energetic material solutions that enable mission success across aerospace and defense. As part of our commitment to developing future talent, we are seeking a Manufacturing Intern for Summer 2026. In this role, you will gain hands-on experience in a fast-paced, highly regulated environment while supporting engineering and manufacturing initiatives. You will collaborate with engineers, technicians, and cross-functional teams on real-world projects that drive operational excellence, product quality, and continuous improvement. Key Responsibilities As a Manufacturing Intern, you will: Support the development and completion of compliance matrices. Assist in preparing and updating PFMEA documentation. Contribute to risk assessments for manufacturing processes. Participate in the design of tooling to support production. Conduct process development experiments and report findings. Actively...
MT
Mar 12, 2026
Intern
Package Engineering Intern - Ph. D Degree
Marvell Technology, Inc. Santa Clara, CA, USA
About Marvell Marvell's semiconductor solutions are the essential building blocks of the data infrastructure that connects our world. Across enterprise, cloud and AI, and carrier architectures, our innovative technology is enabling new possibilities. At Marvell, you can affect the arc of individual lives, lift the trajectory of entire industries, and fuel the transformative potential of tomorrow. For those looking to make their mark on purposeful and enduring innovation, above and beyond fleeting trends, Marvell is a place to thrive, learn, and lead. Your Team, Your Impact Be a significant part of the engineering team that enables the Connected Digital Lifestyle. Marvell's expertise is delivering industrial leading silicon and platform solutions to datacenter processors, AI, networking and many more end applications to the world. We are the package engineering team that drives semiconductor package development from concept to mass production for all Marvell products. You...
VT
Mar 12, 2026
Intern
2026 Voyager Summer Internship - Mechanical Engineering
Voyager Technologies, Inc. San Diego, CA, USA
Voyager is an innovative defense, national security and space technology company committed to advancing and delivering transformative, mission-critical solutions. We tackle the most complex challenges to unlock new frontiers for human progress, fortify national security, and protect critical assets to lead in the race for technological and operational superiority from ground to space. Forge the Future: Join Voyager Technologies The future belongs to those who build it. At Voyager Technologies, we're building technologies that protect lives, expand frontiers and prepare us for what's next. And we're doing that with people who are wired to solve, build, adapt and lead. These roles are not for the faint of heart. You'll help lay the foundation for humanity's future. Join a culture where innovation thrives, curiosity is rewarded, and impact is real. We're a company of doers, thinkers and builders, united by purpose and grounded in reality. If you want to put your skills to...
SI
Mar 11, 2026
Intern
Manufacturing Engineering Intern - Mechanical
Skydio, Inc Hayward, CA, USA
Skydio is the leading US drone company and the world leader in autonomous flight, the key technology for the future of drones and aerial mobility. The Skydio team combines deep expertise in artificial intelligence, best-in-class hardware and software product development, operational excellence, and customer obsession to empower a broader, more diverse audience of drone users, from utility inspectors to first responders, soldiers in battlefield scenarios and beyond. About the role: As a Manufacturing Engineering Intern you'll support the ramp of new and existing product assemblies by designing fixtures, writing and validating work instructions, piloting assembly processes, and driving small-scale improvements that scale to full production. Example projects: How you'll make an impact (example projects below): Create assembly work instructions (WI) for a new sub-assembly and/or station Deliverables: clear step-by-step WI with photos/diagrams, torque/spec callouts, inline...
OA
Mar 08, 2026
Intern
Intern, Mechanical Engineer [Propulsion]
Odys Aviation Long Beach, CA, USA
About Odys Our mission at Odys is simple - we build safe, sustainable aircraft to cut travel time in half on the world's busiest corridors. Our flagship aircraft Alta enables travelers to skip the big-airport hassle by using city helipads and local airports to connect cities less than 1,000 miles apart (approx 40% of flights). And on average cut CO2 by 76% on tens of billions of flight miles globally. To get there, we start with our UAV called Laila for commercial logistics, medical transport, humanitarian aid, disaster relief, and defense missions. We're deploying aircraft with launch partners (Fiji Airways, Honeywell, Aramex, US Navy) beginning in late 2025 and already have firm orders for aircraft under contract. We're a team of expert engineers from deep tech and aerospace that focus on fast iterations loops (completed transition flight faster than our peers) combined with mastery of the aircraft certification process. Previously, our team developed custom drones, brought...
EU
Mar 08, 2026
Intern
Intern - Mechanical Engineer
$22.00 hourly
Emcor UK El Cajon, CA, USA
About Us We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation for combining high-quality consulting services with customized energy solutions. Our integrated, single-source solutions include turnkey in-house capabilities with design assistance, as well as engineering applications and automated control systems. Job Summary The Mesa Internship Program is a summer rotational program for students seeking experience in energy, mechanical, building, service, sustainability, sales, or project management. Mesa Energy Systems, Inc. has an opening for an Engineering Intern. This position will provide drafting and engineering support to the Mesa Energy Systems Engineering Group. Interns will be responsible for providing drafting and engineering support to the Mesa Energy Systems Engineering Group. As assigned by management, the engineering intern's tasks may include, but are not limited to, job walks or site visits to gather information...
AV
Mar 07, 2026
Intern
Summer 2026 Mechanical Engineering Intern
AeroVironment, Inc. Simi Valley, CA, USA
Worker Type Supplemental Job Description Summary Our Summer Internship Program is meticulously designed to provide students with an immersive and dynamic experience within our industry, offering a taste of what it's like to be part of our professional team. We strive to simulate a full-time job, enabling our interns to work hands-on with cutting-edge technology, contribute to meaningful projects, build strong relationships with coworkers, and develop strategic problem-solving skills. Our program is highly selective, hosting only a handful of interns each year, ensuring personalized attention and ample opportunities to work closely with AV team members. We are hiring for various roles and locations throughout the U.S. During the interview process, we will discuss specific details regarding the team and location. Position Responsibilities Assist in the design of mechanical components and systems, including airframes, payload enclosures, ground equipment, launch...
NB
Mar 06, 2026
Full time
Design Engineer II
Niagara Bottling, LLC Diamond Bar, CA, USA
At Niagara, we're looking for Team Members who want to be part of achieving our mission to provide our customers the highest quality most affordable bottled water. Consider applying here, if you want to: Work in an entrepreneurial and dynamic environment with a chance to make an impact. Develop lasting relationships with great people. Have the opportunity to build a satisfying career. We offer competitive compensation and benefits packages for our Team Members. Design Engineer II Design Engineer II is responsible for initial and ongoing evaluation, feasibility analyses, and optimization of Niagara's Mechanical, Electrical, and Plumbing [MEP] system designs. MEP systems include, but are not limited to: product water processing, cooling/chilled water, compressed air, HVAC, and bottling/injection molding production equipment. Detailed Description System Assessments Feasibility analyses and utility consumption modeling for expansion initiatives Evaluation and...
In
Mar 05, 2026
Intern
Engineering Intern
Inogen Goleta, CA, USA
Description Engineering Intern Department: R&D Job Summary The R&D Engineering Intern will work onsite and collaborate closely with engineers within the department, as well as other Inogen associates involved in the R&D process. As an R&D Engineering Intern, you will contribute to R&D deliverables, assist with new product development and sustaining tasks, optimize in-house development testing and processes, and engage in design control activities. The intern will meet regularly with their coach to define daily tasks and reporting. Responsibilities (Specific tasks, duties, and essential functions of the job) Engineering Intern I Work within the engineering department to develop and support Inogen projects and products. Perform testing, experimentation, and validation to support product design and development, working independently. Assist with research and development on new and existing projects. Generate and complete design control...
MB
Mar 05, 2026
Intern
Mechanical Engineering Intern
Michael Baker International, Inc. San Diego, CA, USA
Job Description MECHANICAL, ELECTRICAL and PLUMBING Mechanical, Electrical and Plumbing (MEP) designs are the lifeblood of a building. Michael Baker designs high-performing systems for complex facilities using innovative strategies to reduce energy usage and operating costs. Our team includes experts in central utility plants, chilled water systems, fluid piping systems, medium voltage systems (up to 38kV), distributed generation, combined heat and power (CHP) and alternate energy solutions (Photovoltaic and Battery Energy Storage System). We bring decades of experience working with users to deliver optimized system designs. We specialize in energy analysis and modeling for airports, transit centers, industrial facilities, healthcare facilities, military training centers and maintenance facilities. We specialize in highly granular modeling of critical systems, such as data centers and central utility plants. What We're Looking For: Michael Baker International is...
Ra
Mar 03, 2026
Intern
Manufacturing Engineering Intern (Summer 2026)
Ralliant Hollister, CA, USA
Job Description PacSci EMC, a Ralliant Operating Company, delivers innovative energetic material solutions that enable mission success across aerospace and defense. As part of our commitment to developing future talent, we are seeking a Manufacturing Intern for Summer 2026, with the possibility of extending to part time thereafter . In this role, you will gain hands-on experience in a fast-paced, highly regulated environment while supporting engineering and manufacturing initiatives. You will collaborate with engineers, technicians, and cross-functional teams on real-world projects that drive operational excellence, product quality, and continuous improvement. Key Responsibilities: Development and completion of compliance matrix PFMEA Risk assessment Design of tooling Process development experiments Participate in group design reviews Work in configuration management system to manage program documentation Conduct data reporting and analysis (qualitative and...
CV
Mar 01, 2026
Intern
R & D Engineering Intern-CM
Cla-Val Costa Mesa, CA, USA
Applicants are considered for positions within the company without regard to race, color, creed, religion, sex, sexual orientation, gender, gender identity and/or expression, age, national origin or ancestry, physical or mental disability, military or protected veteran status, marital or parental status, medical condition unrelated to the person's ability to perform the job, pregnancy, genetic information, political affiliation, citizenship, or any other basis protected by federal, state, or local laws. Any offer of employment is contingent upon your successful completion of a pre-employment substance abuse and physical screening, verification of documents pertaining to your right to work in the United States using E-VERIFY, and completion of required employment documents GRISWOLD INDUSTRIES R&D Engineer Intern JOB DESCRIPTION : Job Summary: Under moderate to extensive supervision, apply mechanical & electrical engineering principles to product development...
ME
Mar 01, 2026
Intern
Intern - Engineer
$22.00 hourly
Mesa Energy Systems, Inc. West Sacramento, CA, USA
About Us We are a full-service HVAC, building automation, chiller, and retrofit contractor with a reputation for combining high-quality consulting services with customized energy solutions. Our integrated, single-source solutions include turnkey in-house capabilities with design assistance, as well as engineering applications and automated control systems. Job Summary The Mesa Internship Program is a summer rotational program for students seeking experience in energy, mechanical, building, service, sustainability, sales, or project management. Mesa Energy Systems, Inc. has an opening for an Engineering Intern. This position will provide drafting and engineering support to the Mesa Energy Systems Engineering Group. Interns will be responsible for providing drafting and engineering support to the Mesa Energy Systems Engineering Group. As assigned by management, the engineering intern's tasks may include, but are not limited to, job walks or site visits to gather information...
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