Drimva

Humble Robotics

Powertrain Engineer

San Francisco · On-site · Full-time · Posted Apr 10, 2026

Experience
5+ years in electric powertrain, battery systems, or vehicle propulsion.
Education
Bachelor’s degree in Mechanical Engineering, Electrical Engineering, or related field.
Visa sponsorship
Eligible to work in the United States.

About the job

Owns the architecture, development, integration, and validation of the electric powertrain for an autonomous heavy-duty vehicle.

What you'll do

  • Develop the powertrain system, including battery, high-voltage architecture, motors, inverters, and drivetrain; manage system tradeoffs and modeling.
  • Lead integration, validation, testing, vehicle bring-up, and debugging of powertrain and high-voltage systems.
  • Manage supplier relationships and collaborate across teams to address safety, thermal, performance, and reliability risks.

What they ask for

  • Bachelor’s degree in Mechanical Engineering, Electrical Engineering, or related field.
  • 5+ years of experience in electric powertrain, battery systems, or vehicle propulsion.
  • Strong fundamentals in electric machines, power electronics, and lithium-ion battery systems; experience with high-voltage system design and safety.
  • Experience delivering hardware from concept through validation, using system modeling tools, and hands-on prototyping, testing, and debugging electromechanical systems.

Nice to have

  • Experience with heavy-duty trucks or commercial EV platforms; battery pack design, integration, or validation.
  • Experience with BMS, HV distribution, thermal management, inverter/motor integration and controls; familiarity with automotive standards or prototype-to-production scaling.

Tools

BMS, ISO 26262, SAE, FMVSS

AI focus

The role involves developing a vision-based AI autonomous hauler. AI tools may also be used during interviews to compare applicants’ qualifications with the job description; a human reviews the output and makes the final hiring decision.

Model-written summary · the original posting is authoritative

First seen Oct 29, 2026 · Last verified Nov 5, 2026 (UTC)