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Battery Test Engineer

Harbinger Motors

Job Location:

Garden Grove, CA - USA

Yearly Salary: USD 120000 - 140000

Posted: 29 September 2026 (14 hours ago)

Application Deadline: 27 December 2026

Vacancies: 1 Vacancy

Job Summary

About Harbinger

Harbinger is an American commercial electric vehicle (EV) company on a mission to transform an industry starving for innovation. Harbingers 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

The Harbinger battery team is looking to add a battery test engineer to characterize battery pack electrical and thermal performance. This key team member will take ownership of the validation of the Auxiliary Power System (APS) product. They will work closely with design engineers quality engineers and manufacturing engineers to ensure design changes are thoroughly tested before being released to production. The test engineer will be responsible for writing procedures developing test software purchasing test equipment and building test stations capable of defining the limits of our battery pack.

Responsibilities:

Work closely with other battery test engineers design engineers BMS engineers and system engineers to characterize and validate battery and system behavior.
Develop test software for executing and automating test cases using LabVIEW and/or CANalyzer.
Participate in the development of BMS software to ensure performance targets are met. Provide data to defend or refute change proposals.
Specify requirements for Design Validation Plan (DVP) test procedures including instrumentation data acquisition and post processing methods.
Author test cases to confirm performance with respect to defined requirements.
Document test results well and support issue resolution.
Prioritize safety and organization in the lab.

Qualifications:

Bachelors/Masters degree in Engineering.
Previous hands-on experience in a lab is required. The candidate should be comfortable working around high-voltage and using hand tools fabricating wiring projects and debugging test setups.
Hands-on experience with instrumentation including thermocouples pressure transducers shunts and oscilloscopes. Ability to use these sensors to obtain the required data based on component design requirement.
Working knowledge of batteries both AC and DC fundamentals and power conversion.
Experience with coding languages and applications for data analysis such as Python or Matlab.
Good technical writing skills for documenting test reports.

Key Benefits & Perks:

Comprehensive Health Dental & Vision (HDV) 100% employee covered
Early-stage Stock Options
Robust Retirement Savings (401k HSA FSA)
Generous Paid Time Off (PTO) & Parental Leave
Annual Vacation Bonus
Wellness & Fertility Benefits
Cell Phone Stipend
Complimentary Meals & Stocked Kitchens

California Pay Range

$120000 - $140000 USD

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

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) Harbingers 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.

Required Experience:

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