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Sr. Reliability Test Engineer

Harbingermotors · Garden Grove, CA · Posted May 14, 2026

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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.

Sr. Reliability Test Engineer

The Test Engineering team at Harbinger Motors is involved in the validation and reliability testing at the vehicle, sub-system, and component levels. The team is looking for someone who has 5+ years of experience with reliability metrics and calculations as well as hands-on reliability testing. This key team member will have ownership of developing reliability test profiles for various vehicle systems and hardware.

Responsibilities:

Work closely with the product design engineers to ensure that products can meet desired life targets

Perform reliability calculations and develop detailed test-plans for accelerated lifecycle tests

Lead the execution of reliability tests

Lead root cause analysis of test failures and/or field failures

Support cross-functional DFMEA sessions

Travel to offsite test locations as needed ( 30%)

Work with cross-functional teams to develop in-house test infrastructure required to test and validate various systems and components

Train personnel on the required processes and operations of complex test systems

Ensure that all tests are conducted in compliance with all safety protocols

Document the results in a report and present it to stakeholders

Participate in discussions with suppliers, supplier quality team, and design team to improve product reliability

Qualifications:

Bachelor’s/Master’s degree in either Engineering or Material Science with 5+ years of industry experience in the field of reliability

Experience with performing reliability calculations and developing test profiles

Experience with hands-on testing of either PCBAs, battery, or thermal systems

Experience with coding languages and applications for data analysis, such as Python or Matlab

Good technical writing skills for documenting test reports

Preferred Qualifications:

Familiarity with EV powertrain architecture and associated HV devices, such as DCDC converters, on-board chargers, junction boxes, inverters, battery, thermal systems, etc.

Experience with data analytics and visualization relevant to product reliability

Experience with HV testing

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

$120,000 $140,000 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 info@harbingermotors.com.

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 s…

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