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Thermal Engineer Intern Jobs in California (NOW HIRING)

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Mech / Thermal Intern

San Jose, CA · On-site

$22 - $29.50/hr

Job Summary Our mechanical/thermal engineering interns will work within the mechanical and thermal engineering organization, with a strong focus on NPI prototyping, manufacturing fixture development ...

Etched

Mech / Thermal Intern

San Jose, CA · On-site

$22 - $29.50/hr

Job Summary Our mechanical/thermal engineering interns will work within the mechanical and thermal engineering organization, with a strong focus on NPI prototyping, manufacturing fixture development ...

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Thermal Engineer Intern information

What is a thermal engineer intern?

A Thermal Engineer Intern assists in designing, analyzing, and testing thermal systems to ensure efficient heat transfer and temperature regulation in various applications. They work with senior engineers to conduct simulations, research materials, and evaluate cooling and heating solutions for mechanical and electronic components. Interns may also help in developing prototypes, performing laboratory tests, and documenting results. This role provides hands-on experience in thermal engineering principles, computational tools, and industry standards.

What types of projects or tasks can a thermal engineer intern expect to work on during their internship?

As a Thermal Engineer Intern, you can expect to assist in tasks such as modeling thermal systems, running simulations, collecting and analyzing experimental data, and helping to optimize heat transfer solutions for products or systems. You may also work closely with senior engineers to support design reviews, develop test plans, or troubleshoot existing issues in prototypes. The role often involves a mix of independent work and collaborative efforts within multidisciplinary teams, such as mechanical, electrical, and manufacturing engineers. This hands-on exposure provides practical experience with real engineering challenges and can be valuable in shaping your future career path.

What are the key skills and qualifications needed to thrive in the thermal engineer intern position, and why are they important?

To thrive as a Thermal Engineer Intern, you need a solid understanding of thermodynamics, heat transfer, and fluid mechanics, generally supported by coursework in mechanical or aerospace engineering. Familiarity with simulation tools like ANSYS or COMSOL, and experience using CAD software, are often expected, while certifications in relevant engineering fundamentals can be a plus. Strong analytical thinking, attention to detail, and the ability to communicate findings clearly are valuable soft skills for this position. These skills enable interns to effectively contribute to complex thermal system designs and analyses, ensuring practical solutions in real-world engineering environments.

What are the most commonly searched types of Thermal Engineer jobs in California?

The most popular types of Thermal Engineer jobs in California are:

What are popular job titles related to Thermal Engineer Intern jobs in California?

For Thermal Engineer Intern jobs in California, the most frequently searched job titles are:

What job categories do people searching Thermal Engineer Intern jobs in California look for?

The top searched job categories for Thermal Engineer Intern jobs in California are:

What cities in California are hiring for Thermal Engineer Intern jobs?

Cities in California with the most Thermal Engineer Intern job openings:

Thermal Engineer Intern jobs near you
Infographic showing various Thermal Engineer Intern job openings in California as of August 2026, with employment types broken down into 95% Full Time, 2% Part Time, and 3% Contract. Highlights an 85% Physical, 6% Hybrid, and 9% Remote job distribution.

Environmental Test Engineer Intern (Fall 2026)

Astranis

San Francisco, CA

Full-time, Internship

Re-posted 23 days ago

Job description

Environmental Test Engineer Intern (Fall 2026)

Internships at Astranis typically last for twelve weeks, and are hourly roles designed for students who are currently enrolled at a four-year university.
As an Intern, you will have an amazing opportunity to work on hard problems - we pride ourselves on giving everyone at Astranis a chance to do meaningful work on challenging projects, no matter their seniority. Many past interns have designed and tested hardware/software that is currently in space or heading to space shortly on on of our satellites, and many of them are now full-time employees at Astranis.
If you have already graduated from a four-year university, please apply to be an Associate Engineer.

Role

  • Work on an interdisciplinary team to design, build, and test satellite hardware and software.

  • Operate and setup environmental test equipment including:

    • Ambient thermal chambers 

    • Thermal Vacuum Chambers (TVAC)
    • Vibration shaker tables 
    • EMI/EMC test equipment

  • Learn to use various pieces of test equipment and instruments (thermal chambers, vibration tables, DAQs, oscilloscopes, etc.) to successfully execute test plans.

  • Set up, operate, and conduct environmental testing including vibration, acoustics, thermal, thermal vacuum, RF

Requirements

  • Have a four-year degree in Electrical Engineering, Mechanical Engineering (or equivalent technical degree)

  • A passion for hardware development, including working in a fast-paced environment and hands-on design and development

  • Ability to handle multiple tasks and prioritize time effectively 

  • Strong communication skills

  • Familiarity with spacecraft systems and operation

  • Must be onsite 5 days a week

Bonus

  • Hands-on experience in designing, building, and testing 

  • Experience writing Python code to: Interface with test equipment, process large datasets, visualize data

  • Experience in CAD

  • Direct electrical or mechanical design experience

  • Demonstrated ability to debug hardware and software problems under time pressure

Apply