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Mechanical Engineer Intern Jobs in San Ramon, CA

Mainspring Energy

Mechanical Engineer

Menlo Park, CA

$119K - $140K/yr

This role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate ...

New

Mainspring Energy

Mechanical Engineer

Menlo Park, CA · On-site

$119K - $140K/yr

This role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate ...

New

Agility Robotics

Mechanical Engineer

Fremont, CA · Hybrid

Our mechanical engineering team is agile and has grown rapidly, and we are looking for a talented engineer to join us in the San Francisco Bay Area. We are responsible for delivering advanced and ...

Techvilla Solutions

Mechanical Engineer

Fremont, CA

We are seeking a Mechanical Engineer to support the design and development of high-precision semiconductor capital equipment. The ideal candidate will have experience in mechanical design, CAD ...

New

DigiLens Inc.

Be Seen First

Mechanical Engineer

Sunnyvale, CA · On-site

$125K - $150K/yr

Complete mechanical engineering projects for DigiLens R&D and Advanced Manufacturing. * Design hardware in CAD using Solidworks to support DigiLens waveguide design, fabrication, and test. * Work ...

Clera

Founding Engineer Intern

San Francisco, CA · On-site

About the Role This is a rare opportunity to join a pre-seed AI startup at the very beginning as a Founding Engineer Intern . You'll build and ship features daily alongside the CTO, working on a ...

Astranis

Mechanical Engineer

San Francisco, CA

Mechanical Engineer As an Astranis Mechanical Engineer, you will design, evaluate, test and build spacecraft parts, processes and mechanical systems. You must have a strong problem-solving background ...

PSI

Mechanical Engineer

San Jose, CA · On-site

We are looking for a Senior Mechanical Engineer to join our company in San Jose. If you thrive on solving challenging hardware problems and want to make a direct impact on cutting-edge technology ...

Agility Robotics

Mechanical Engineer

Fremont, CA · Hybrid

$133K - $172K/yr

Our mechanical engineering team is agile and has grown rapidly, and we are looking for a talented engineer to join us in the San Francisco Bay Area. We are responsible for delivering advanced and ...

Akima, LLC

Mechanical Engineer

Livermore, CA · On-site

$100K - $175K/yr

As a Mechanical Engineer, you will contribute to the mechanical design, conduct full product environmental testing, and verify requirements in support of qualification and product delivery. Your role ...

Clera

Founding Engineer Intern

San Francisco, CA · On-site

About the Role This is a rare opportunity to join a pre-seed AI startup at the very beginning as a Founding Engineer Intern . You'll build and ship features daily alongside the CTO, working on a ...

Substrate

Mechanical Engineer

San Francisco, CA · On-site

$150K - $275K/yr

Mechanical Engineer Substrate is addressing one of the most important technological problems facing the United States. At the intersection of advanced manufacturing and cutting-edge physics, we are ...

Agility Robotics

Mechanical Engineer

Fremont, CA · On-site +1

$133K - $172K/yr

Our mechanical engineering team is agile and has grown rapidly, and we are looking for a talented engineer to join us in the San Francisco Bay Area. We are responsible for delivering advanced and ...

Etched

Mechanical Engineer

San Jose, CA · On-site

$150K - $275K/yr

As a Mechanical Engineer at Etched, you will be integral to the development of high-performance data center products, from initial concept through to production. You will collaborate closely with ...

Pivotal Systems

Mechanical Engineer

Fremont, CA

Job Title:Mechanical Engineer Job Overview:As a Mechanical Engineer, you will be responsible for designing, analyzing, and improving mechanical systems and components. This role involves ...

Pivotal Systems

Mechanical Engineer

Fremont, CA · On-site

Job Title: Mechanical Engineer Job Overview: As a Mechanical Engineer, you will be responsible for designing, analyzing, and improving mechanical systems and components. This role involves ...

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All JobsMechanical Engineer Intern JobsMechanical Engineer Intern Jobs in San Ramon, CA

Mechanical Engineer Intern information

See San Ramon, CA salary details

$16

$24

$33

How much do mechanical engineer intern jobs pay per hour?

As of Aug 9, 2026, the average hourly pay for mechanical engineer intern in San Ramon, CA is $24.45, according to ZipRecruiter salary data. Most workers in this role earn between $20.14 and $27.12 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a mechanical engineer intern, and why are they important?

To thrive as a Mechanical Engineer Intern, you need a strong grasp of engineering principles, mathematics, and problem-solving skills, typically supported by progress toward a mechanical engineering degree. Familiarity with CAD software (such as SolidWorks or AutoCAD), simulation tools, and basic manufacturing processes is often required. Strong teamwork, willingness to learn, and effective communication skills help interns collaborate and absorb feedback in a professional environment. These abilities are crucial for contributing meaningfully to engineering projects and developing technical expertise for future roles.

What types of projects and responsibilities can a mechanical engineer intern expect during their internship?

As a Mechanical Engineer Intern, you'll typically assist with tasks such as CAD modeling, design analysis, prototype testing, and documentation of mechanical systems. Interns often collaborate closely with senior engineers and cross-functional teams, contributing to ongoing projects in product development or process improvement. While responsibilities can vary by company, you may also be involved in hands-on work in labs or workshops, attending team meetings, and learning to use industry-standard engineering tools. This exposure offers a valuable opportunity to develop both technical and teamwork skills in a real-world engineering environment.

What does a mechanical engineer intern do?

A Mechanical Engineer Intern assists professional engineers with the design, development, and testing of mechanical devices and systems. Their responsibilities often include creating CAD drawings, conducting research, performing calculations, and helping with prototyping or laboratory testing. Interns gain hands-on experience by supporting real engineering projects and working alongside experienced engineers. This position provides valuable exposure to engineering processes and workplace culture, making it a key step for students studying mechanical engineering.

What is the difference between Mechanical Engineer Intern vs Mechanical Design Engineer?

AspectMechanical Engineer InternMechanical Design Engineer
Required CredentialsEnrolled in or recent graduate of Mechanical Engineering programBachelor's or higher in Mechanical Engineering or related field
Work EnvironmentInternship setting, often in engineering departments or labsFull-time engineering office or design studio
Employer & Industry UsageInternships offered by manufacturing, automotive, aerospace companiesDesign-focused roles in similar industries

The main difference between a Mechanical Engineer Intern and a Mechanical Design Engineer is experience and responsibility level. Interns are typically students gaining practical experience, while Mechanical Design Engineers are full-time professionals responsible for designing and developing mechanical systems.

What are the most commonly searched types of Mechanical Engineer jobs in San Ramon, CA? The most popular types of Mechanical Engineer jobs in San Ramon, CA are:
What are popular job titles related to Mechanical Engineer Intern jobs in San Ramon, CA? For Mechanical Engineer Intern jobs in San Ramon, CA, the most frequently searched job titles are:
What job categories do people searching Mechanical Engineer Intern jobs in San Ramon, CA look for? The top searched job categories for Mechanical Engineer Intern jobs in San Ramon, CA are:
What cities near San Ramon, CA are hiring for Mechanical Engineer Intern jobs? Cities near San Ramon, CA with the most Mechanical Engineer Intern job openings:
Mechanical Engineer Intern jobs near you
Infographic showing various Mechanical Engineer Intern job openings in San Ramon, CA as of August 2026, with employment types broken down into 60% Internship, and 40% Full Time. Highlights an 100% In-person job distribution, with an average salary of $50,866 per year, or $24.5 per hour.

Mechanical Engineer

Mainspring Energy

Menlo Park, CA

$119K - $140K/yr

Full-time

Posted 3 days ago

New

Job description

About Mainspring

Mainspring Energy manufactures and delivers fuel-flexible, low-emissions local power solutions that rapidly add new capacity and deliver reliable, affordable, and sustainable electric power. The company began commercial shipments of its Mainspring Linear Generators in 2020 and today has hundreds of megawatts in advanced development and field operations for leading Fortune 500 companies, data centers, and utilities. Mainspring also partners with global energy leaders including AEP, NextEra Energy Resources, Schneider Electric, and more.

The core values that ground our work, guide our decisions, and connect us together:

  • Pragmatic Optimism
  • Excellence without Ego
  • Proactive Collaboration

About the Role

Mainspring is seeking a Mechanical Engineer to own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects for our Linear Generator platform. In this role, you will design mechanical hardware, support analysis and testing, drive assigned work through validation and release, and work cross-functionally with engineering, manufacturing, quality, supply chain, test, and service teams.

This role is intended for engineers who have developed practical mechanical engineering experience through multiple design, analysis, test, release, or implementation cycles. A strong candidate should be able to independently own defined-scope engineering work, apply sound mechanical fundamentals, identify common risks, communicate clearly, and follow through on deliverables with support available for ambiguity, complex tradeoffs, or higher-risk decisions.

Candidates who are still primarily learning engineering fundamentals, company processes, and task-level execution may be better aligned to an Associate Mechanical Engineer role, while candidates who have already demonstrated independent ownership of significant projects, subsystems, or technical workstreams may be better aligned to a Senior Mechanical Engineer role.

Responsibilities
  • Own defined-scope mechanical engineering tasks, workstreams, or moderate-complexity projects with clear objectives and some ambiguity in execution. 
  • Design moderately complex parts, assemblies, fixtures, or subsystems while considering function, interfaces, manufacturability, serviceability, cost, reliability, and safety.
  • Use engineering calculations, tolerance reviews, simulations, experiments, test data, and hands-on troubleshooting to validate designs and guide improvements.
  • Develop and execute test plans, interpret results, document findings, and use evidence to support design, validation, and release decisions.
  • Track deliverables, manage dependencies within your scope, communicate blockers early, and follow through on design, documentation, validation, and release activities.
  • Work cross-functionally with engineering, manufacturing, quality, supply chain, test, reliability, suppliers, and service teams to resolve issues and move projects forward.
Qualifications
  • BS or MS in Mechanical Engineering or a similar engineering field, with demonstrated experience contributing to mechanical design work beyond purely academic projects.
  • Experience designing, analyzing, testing, and iterating mechanical hardware through multiple project phases or design cycles.
  • Ability to independently own defined-scope engineering work with clear deliverables, while seeking guidance for ambiguous, complex, or high-risk decisions. 
  • Strong mechanical fundamentals, including practical experience with parts, assemblies, fixtures, mechanisms, structures, thermal systems, fluid systems, electromechanical packaging, or other relevant mechanical systems.
  • Demonstrated ability to use analysis, testing, data, and engineering judgment to evaluate designs, compare options, and recommend practical next steps.
  • Clear communication and execution skills, including the ability to document assumptions, decisions, risks, test results, and project status for technical and cross-functional stakeholders.
Preferred Qualifications
  • Experience supporting hardware from concept through prototype, validation, release, production, or field use.
  • Experience with CAD tools such as SolidWorks or similar, including part design, assembly design, drawings, and design documentation.
  • Experience with PLM systems, drawing release, engineering change processes, supplier qualification, production support, or field implementation.
  • Experience with structured problem-solving, root cause analysis, failure analysis, design of experiments, reliability testing, or risk-based validation planning.
  • Experience working with suppliers, contract manufacturers, production teams, quality teams, or field service organizations.
  • Experience with energy systems, engines, generators, compressors, pumps, thermal systems, fluid systems, structures, high-cycle fatigue environments, precision alignment systems, or industrial equipment.
$119,000 - $140,000 a year
This position is onsite at our Menlo Park HQ. The salary will be adjusted to reflect local market conditions based on employee location as well as the experience of the employee. Along with the base salary, Mainspring offers pre-IPO stock options + benefits.
Before you apply, a quick note on your resume
We care about the substance of your work and want to make sure we learn as much as we can about your design experience.  To help us evaluate your experience accurately, please ensure your resume includes:
  • What you actually built or worked on - name the real product, subsystem, or hardware (not just "components" or "systems"). "Redesigned the bracket mounting the compressor to reduce vibration failures" tells us far more than "designed mechanical components."
  • What you personally did, separate from what your team did. If you contributed to a group project, tell us your specific role and contribution.
  • The engineering fundamentals you applied - tie your skills (CAD, FEA, GD&T, thermal/fluid analysis, testing, etc.) to the actual problem you used them on, rather than listing them as standalone skills.
  • What happened as a result - did it pass validation/testing, resolve a failure, ship to production, and if so, at what volume or scale (prototype quantity, low-rate production, high-volume manufacturing)? This helps us understand whether your experience is with one-off/prototype hardware or product that shipped at scale.
One more thing: please don't feel obligated to keep your resume to one page. If accurately describing your relevant projects and contributions takes more space, that's completely fine - we'd rather see the detail than have you compress or omit meaningful work to fit a page limit.  
 
Thank You!

Does your experience not meet all of our posted requirements? Studies have shown that some people are less likely to apply to positions unless they meet every listed requirement. At Mainspring, we are committed to building a diverse, inclusive, flexible, and collaborative environment, so if you want to help us transition the world to clean and affordable electricity, and don't meet all posted requirements for a particular role, we'd still love to hear from you. Mainspring can sometimes be flexible enough to shift responsibilities for the right person, or otherwise identify open or upcoming roles that may better fit your professional background.

In more traditional words, Mainspring Energy, Inc is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

This compensation and benefits information is based on Mainspring Energy's estimate as of the date of publication and may be modified in the future. We generally do not negotiate on salary once we have made an offer. The level of pay within the range will depend on a variety of job-related factors that may include location, relevant prior experience and/or education, or particular skills and expertise. New hires joining the company tend to be paid within the starting base pay range noted above, with opportunities to increase pay over time based on development of additional skills, competencies, and company-specific knowledge.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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