About Harbinger

Harbinger is an American commercial electric vehicle (EV) company on a mission to transform an industry starving for innovation. Harbinger’s best-in-class team of EV, battery, and drivetrain experts have pooled their deep experience to bring a first-of-its-kind EV platform to support the growing demand for medium-duty EVs and Hybrids. Harbinger: Familiar Form, Revolutionary Foundation.

Job Overview

As a thermal intern, you will help the thermal team in the design and development of the thermal system of our commercial truck. Your responsibilities will include component sizing and analysis, system and component level testing, supplier communication and vehicle build activities. We are looking for someone with a strong interest in thermal systems and fluid mechanics, and wants to gain high-level knowledge of the automotive engineering processes.

Location: Immerse yourself in our innovative culture! This role requires a commitment of 4 days in-office per week at our advanced facility in Garden Grove, CA as well as full-time hours (40 hours a week).
Duration: Start date is January 5, 2026 through March or April 2026, depending on your school schedule.
Relocation Support: A $1,000 relocation stipend is available for interns currently residing more than 50 miles from Garden Grove, CA.

What You’ll Do:

Develop and execute testing campaigns on the thermal system on the component and system level
Design thermal components in 3D CAD and help with vehicle integration activities
Work with suppliers to help refine the thermal system for high-volume production
Learn about and get involved with thermal system architecture, analysis and component sizing
Support vehicle build activities and vehicle testing for the thermal system
Interface with cross functional teams and gain a deep understanding of automotive EV systems and engineering processes

Who You Are:

A student or recent graduate with a Bachelor’s in Engineering
Strong engineering fundamentals and keen interest in heat transfer, fluid mechanics, thermodynamics, and structures
Experience with 3D CAD softwares (SolidWorks/ Fusion 360/ CATIA etc.)
Familiar using Matlab and Simulink for data processing and 1D simulation is considered a plus
Hands-on experience working on engineering projects (FSAE or others) is preferred ● Someone with a collaborative mindset to contribute many cross-functional tasks

California Pay Range

$25 - $35 USD an hour

Equal Opportunity

Harbinger is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex, sexual orientation, gender, gender expression, gender identity, genetic information or characteristics, physical or mental disability, marital/domestic partner status, age, military/veteran status, medical condition, or any other characteristic protected by law.

Harbinger is committed to ensuring that our hiring process is accessible for persons with disabilities. If you have a disability or limitation, such as those covered by the Americans with Disabilities Act, that requires accommodations to assist you in the search and application process, please email us at [email protected].

Candidate Data Privacy

Harbinger may collect, use and disclose your personal information or personal data (within the meaning of the applicable data protection laws) when you apply for employment and/or participate in our recruitment processes (“Candidate Personal Data”). This data includes contact, demographic, communications, educational, professional, employment, social media/website, network/device, recruiting system usage/interaction, security and preference information. Harbinger may use your Candidate Personal Data for the purposes of (i) tracking interactions with our recruiting system; (ii) carrying out, analyzing and improving our application and recruitment process, including assessing you and your application and conducting employment, background and reference checks; (iii) establishing an employment relationship or entering into an employment contract with you; (iv) complying with our legal, regulatory and corporate governance obligations; (v) recordkeeping; (vi) ensuring network and information security and preventing fraud; and (vii) as otherwise required or permitted by applicable law.

Harbinger may share your Candidate Personal Data with (i) internal personnel who have a need to know such information in order to perform their duties, including individuals on our HR, legal, and finance teams, and the team(s) with the position(s) for which you are applying; (ii) Harbinger affiliates; and (iii) Harbinger’s service providers, including providers of background checks, staffing services, and cloud services.

Harbinger may transfer or store internationally your Candidate Personal Data, including to or in the United States, Canada, the United Kingdom, and the European Union and in the cloud, and this data may be subject to the laws and accessible to the courts, law enforcement and national security authorities of such jurisdictions.

Please note that we are currently not accepting applications from third party application services. Any unsolicited resumes or candidate profiles submitted in response to our job posting shall be considered the property of Harbinger and are not subject to payment of referral or placement fees if any such candidate is later hired by Harbinger unless you have a signed written agreement in place with us which covers the applicable job posting.

Intern – Thermal

Harbinger Motors

Compensation Overview