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Internship R&D Mechanical Engineer Jobs in California

Senior Mechanical Engineer

Fremont, CA ยท On-site

$123K - $163K/yr

Development Engineering Leadership: Oversee the entire mechanical engineering design and ... R&D-level and mass-production-level. * Manufacturing Collaboration: Work closely with R&D, ...

... with engineering and production to ensure quality and performance. Ideal candidates will have over 5 years of experience in engine development, strong mechanical skills, and proficiency in dyno ...

New

... with engineering and production to ensure quality and performance. Ideal candidates will have over 5 years of experience in engine development, strong mechanical skills, and proficiency in dyno ...

New

Mechanical Engineer (Ph.D.)

Menlo Park, CA ยท On-site

$140K - $160K/yr

D.s * 90+ Disciplines * 30+ Offices globally Our Opportunity We are currently seeking a Mechanical Engineer for our Mechanical Engineering Practice in our Menlo Park, CA office. In this role, you ...

Bachelor's degree in mechanical engineering, aerospace engineering, or physics * 1+ years experience with CAD and FEA software packages (internship and extracurricular experience is applicable) * 1+ ...

Mechanical Engineer

San Diego, CA ยท On-site

$120K - $160K/yr

... R) device. * 10 years of demonstrated experience in the design of electro-mechanical systems ... ing services, and professional services. We integrate emerging technology, rapidly and securely ...

Mechanical Engineer

San Diego, CA ยท On-site

$120K - $160K/yr

... R) device. * 10 years of demonstrated experience in the design of electro-mechanical systems ... ing services, and professional services. We integrate emerging technology, rapidly and securely ...

Mechanical Engineer

San Diego, CA ยท On-site

$120K - $160K/yr

... R) device. * 10 years of demonstrated experience in the design of electro-mechanical systems ... ing services, and professional services. We integrate emerging technology, rapidly and securely ...

Mechanical Engineer

San Diego, CA ยท On-site

$120K - $160K/yr

... R) device. * 10 years of demonstrated experience in the design of electro-mechanical systems ... ing services, and professional services. We integrate emerging technology, rapidly and securely ...

Mechanical Engineer

San Diego, CA ยท On-site

$120K - $160K/yr

... R) device. * 10 years of demonstrated experience in the design of electro-mechanical systems ... ing services, and professional services. We integrate emerging technology, rapidly and securely ...

... R) device. * 10 years of demonstrated experience in the design of electro-mechanical systems ... ing services, and professional services. We integrate emerging technology, rapidly and securely ...

Mechanical Engineer (Ph.D.)

Irvine, CA ยท On-site

$140K - $160K/yr

D. in Mechanical Engineering, Aerospace Engineering, Chemical Engineering, and/or similar fields with an emphasis on fluid mechanics and/or heat transfer * Specialized knowledge/experience in ...

Mechanical Engineer

San Diego, CA ยท On-site

$120K - $160K/yr

... R) device. * 10 years of demonstrated experience in the design of electro-mechanical systems ... ing services, and professional services. We integrate emerging technology, rapidly and securely ...

Mechanical Engineer

El Cajon, CA ยท On-site

$120K - $160K/yr

... R) device. * 10 years of demonstrated experience in the design of electro-mechanical systems ... ing services, and professional services. We integrate emerging technology, rapidly and securely ...

Showing results 41-60

Internship R D Mechanical Engineer information

What is an internship R&D mechanical engineer?

Internship R&D Mechanical Engineers are students or recent graduates who work with research and development teams to assist in designing, testing, and improving mechanical products or systems. They gain hands-on experience by contributing to various phases of product development, including prototyping, analysis, and documentation. These interns often use engineering software, perform experiments, and collaborate with senior engineers to solve technical challenges. The role helps them develop both technical and professional skills while exploring a potential career in mechanical engineering R&D.

What types of projects and responsibilities can an internship R&D mechanical engineer expect during their program?

As an Internship R&D Mechanical Engineer, you will typically have the opportunity to work on hands-on projects such as designing prototype components, conducting experiments, and assisting with product testing. You'll likely collaborate with senior engineers and cross-functional teams including electrical engineers, manufacturing, and quality assurance. The work environment is often dynamic and encourages innovation and problem-solving. Interns are encouraged to contribute ideas, learn from feedback, and participate in regular team meetings. This exposure helps you gain practical experience and develop skills that can lead to full-time opportunities after graduation.

What are the key skills and qualifications needed to thrive as an internship R&D mechanical engineer, and why are they important?

To thrive as an Internship R&D Mechanical Engineer, you need a solid understanding of mechanical engineering principles, a relevant degree in progress, and proficiency in CAD design. Familiarity with engineering software like SolidWorks or AutoCAD and experience with prototyping or simulation tools are typically required. Strong problem-solving abilities, teamwork, and effective communication skills help interns excel in collaborative and innovative environments. These capabilities are crucial for contributing to research projects, developing prototypes, and supporting the advancement of new products or technologies.

What is the difference between Internship R&D Mechanical Engineer vs Mechanical Design Engineer?

AspectInternship R&D Mechanical EngineerMechanical Design Engineer
CredentialsTypically pursuing or recently completed a relevant degreeBachelor's or higher in Mechanical Engineering
Work EnvironmentInternship setting, often in R&D labs or innovation teamsFull-time design and development teams in manufacturing or tech companies
Employer & Industry UsageEntry-level, often in research-focused roles across various industriesDesign-focused roles in automotive, aerospace, or product manufacturing

In summary, an Internship R&D Mechanical Engineer is a temporary, entry-level position focused on research and development tasks, often for students or recent graduates. A Mechanical Design Engineer is a full-time professional responsible for designing mechanical components and systems, with more experience and responsibility in product development.

What are the most commonly searched types of R&D Mechanical Engineer jobs in California? The most popular types of R&D Mechanical Engineer jobs in California are:
Infographic showing various Internship R&D Mechanical Engineer job openings in California as of August 2026, with employment types broken down into 88% Full Time, 8% Part Time, 3% Contract, and 1% Nights. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution.

Senior Mechanical Engineer

II-VI Incorporated

Fremont, CA โ€ข On-site

$123K - $163K/yr

Full-time

Re-posted yesterday


Job description

Primary Duties & Responsibilities

  • Development Engineering Leadership: Oversee the entire mechanical engineering design and integration effort on the test, assembly, characterization equipment and related components for high-power CW lasers, high speed PD, and/or co-packaged optics at both R&D-level and mass-production-level.
  • Manufacturing Collaboration: Work closely with R&D, manufacturing teams and Fremont product engineering and logistic team to address needs and optimize performance.
  • Cross-Functional Teamwork: Collaborate with Fremont Product Engineers, Design, Planning, Logistic team to ensure good quality product on time delivery on schedule

Education & Experience

  • A Master's degree or higher in Mechanical Engineering, Applied Physics, Materials Science, or related field.
  • At minimum 5 years of industrialย experience in engineering development, preferably with a focus on automated semiconductor production or test/measurement/inspection equipment.ย  Direct hands-on experience in semiconductor laser chip or module test instrumentation and system design is highly desired.ย 

    Skills & Other Requirements

  • Strong background and experience in 3D design software such as SolidWorks.
  • Creative and user-friendly approach to mechanical designs to improve production efficiency.
  • Solid experience in automated test and measurement equipment, machine vision systems, motion systems and robotics, pneumatics, electronics, optics (free-space and fiber optics), thermal management, and automated system instrumentation.ย  ย 
  • Exceptional leadership and interpersonal skills, capable of managing complex projects and diverse teams.
  • Solid problem-solving skills with a proactive approach to addressing and preempting issues.
  • Excellent communication skills, essential for effective teamwork and cross-disciplinary collaboration.

Working Conditions

  • This role will be based on-site in Fremont, CA.ย 
  • Regular use of a computer and other office equipment is necessary.

Physical Requirements

  • Sitting for extended periods while working on a computer or in meetings.
  • Use of hands and fingers for typing, writing, and handling documents.
  • Occasional lifting of objects or materials up to 20 pounds for administrative tasks.
  • Ability to communicate verbally and in writing.

Safety Requirements

All employees are required to follow the site EHS procedures and Coherent Corp. Corporate EHS standards.

Quality and Environmental Responsibilities

Depending on location, this position may be responsible for the execution and maintenance of the ISO 9000, 9001, 14001 and/or other applicable standards that may apply to the relevant roles and responsibilities within the Quality Management System and Environmental Management System.

Cultureย Commitment

Ensure adherence to company's values (ICARE) in all aspects of your position at Coherent Corp.:

Integrity - Create an Environment of Trust

Collaboration - Innovate Through the Sharing of Ideas

Accountability - Own the Process and the Outcome

Respect - Recognize the Value in Everyone

Enthusiasm - Find a Sense of Purpose in Work


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Coherent Corp. is an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.


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If you need assistance or an accommodation due to a disability, you may contact us at talentacquisition@coherent.com.


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Coherent is a global leader in lasers, engineered materials and networking components. We are a vertically integrated manufacturing company that develops innovative products for diversified applications in the industrial, optical communications, military, life sciences, semiconductor equipment, and consumer markets. Coherent provides a comprehensive career development platform within an environment that challenges employees to perform at their best, while rewarding excellence and hard-work through a competitive compensation program. It's an exciting opportunity to work for a company that offers stability, longevity and growth. Come Join Us!
Note to recruiters and employment agencies: We will not pay for unsolicited resumes from recruiters and employment agencies unless we have a signed agreement and have required assistance, in writing, for a specific opening.