About the role
Staff Mechanical Engineer, Powertrain at Harbinger Motors Inc. in Garden Grove, CA. Hybrid. Posted September 30, 2026.
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.
What You’ll Do:
- Lead the design and development of key systems within the powertrain, covering Electric and Internal Combustion.
- Break down complex technical challenges into smaller components and support junior engineers in delivering solutions.
- Set standards and create best practices for others to follow in technical tasks (FEA, design guidelines, hand calculations etc).
- Support the in-service products, leading failure investigations and cost-down exercises.
- Work closely with manufacturing and quality to ensure the consistent output of our powertrain products, while supporting production ramp ups, supplier changes etc.
- Deliver high quality, independent work.
- Take in, process and communicate complex technical information to a wide audience.
Who You Are:
- Bachelor of Science in Mechanical Engineering (or similar) with a minimum of 10 years of relevant industry experience with emphasis on mechanical design.
- A design engineer who has owned multiple powertrain systems from concept through full life in an automotive environment.
- Demonstrated experience in working with Electric Drive Units (EDUs) and Internal Combustion (IC) engines,
- Deep understanding of powertrain manufacturing processes.
- Proficiency in 3D CAD systems (CATIA preferred), FEA (stress analysis, thermal simulations etc) and the design of rotating components.
- A clear communicator, who has a proven record of delivering complex projects with multi-disciplinary teams under tight deadline pressure.
- 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
Prefer to apply yourself? Apply on Harbinger Motors Inc.’s site
Quick answers
Where is this job based?
Garden Grove, CA. The role is hybrid.
How much experience do you need?
The posting asks for 10+ years.
How do you apply?
Apply on Harbinger Motors Inc.’s site using the link on this page. With a free Jobmagic account you can see how well you fit first.
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