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Senior Drivetrain Engineer Jobs in California (NOW HIRING)

Humble Robotics

Senior Powertrain Engineer

San Francisco, CA · On-site

$123K - $169K/yr

Position Overview The Senior Powertrain Engineer owns the architecture, design, and delivery of the ... Own supplier technical relationships for battery systems, motors, inverters, and drivetrain ...

LettrLabs

Senior Mechanical Design Engineer

Los Angeles, CA · On-site

$97K - $133K/yr

We're looking for a Senior Mechanical Design Engineer to own the mechanical design and development ... related drivetrain components * Develop sheet metal components and assemblies with a strong ...

Zoox

Senior/Staff Cost Engineer

Foster City, CA · On-site

$195K - $250K/yr

As a Senior Cost Engineer, you will support the Vehicle Program team by taking ownership of the ... You will be working with engineering experts in several areas such as drivetrain, trim & lighting ...

Zoox

Senior/Staff Cost Engineer

Foster City, CA · On-site

$195K - $250K/yr

As a Senior Cost Engineer, you will support the Vehicle Program team by taking ownership of the ... You will be working with engineering experts in several areas such as drivetrain, trim & lighting ...

Zoox

Senior/Staff Cost Engineer

Foster City, CA · On-site

$195K - $250K/yr

As a Senior Cost Engineer, you will support the Vehicle Program team by taking ownership of the ... You will be working with engineering experts in several areas such as drivetrain, trim & lighting ...

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Senior Drivetrain Engineer information

What is the difference between Senior Drivetrain Engineer vs Mechanical Engineer?

AspectSenior Drivetrain Engineer
Primary FocusDesign, development, and testing of drivetrain systems and components
Required CredentialsBachelor's or Master's in Mechanical, Electrical, or Automotive Engineering; experience in drivetrain systems
Work EnvironmentAutomotive, aerospace, or electric vehicle industries, often in R&D or engineering teams
Common UsageUsed in roles focused on powertrain and drivetrain technology development

While a Senior Drivetrain Engineer specializes in drivetrain systems, a Mechanical Engineer has a broader scope, working on various mechanical systems across industries. The Senior Drivetrain Engineer role emphasizes drivetrain-specific expertise, whereas Mechanical Engineers may work on diverse mechanical projects. Both roles often require similar educational backgrounds and work environments, but their focus areas differ significantly.

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For Senior Drivetrain Engineer jobs in California, the most frequently searched job titles are:

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Infographic showing various Senior Drivetrain Engineer job openings in California as of August 2026, with employment types broken down into 92% Full Time, 2% Part Time, and 6% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution.

Senior Powertrain Engineer

San Francisco, CA

Humble Robotics
See more jobs at Humble Roboticsexternal

$123K - $169K/yr

Full-time

Re-posted 4 days ago

Job description

About Humble Robotics

Working at Humble Robotics means taking on the biggest change in ground transportation in decades. We're building an autonomous, zero-emissions hauler that dramatically lowers the cost of freight with groundbreaking vision-based AI, designed for today's global logistics network. 

We're a fast-moving, close-knit team of AV industry veterans and innovative thinkers. We don't believe culture can be engineered - but when it falls into place, it's a once-in-a-lifetime adventure.

Progress has never felt so present.

Position Overview

The Senior Powertrain Engineer owns the architecture, design, and delivery of the full electric powertrain system - including battery, high voltage distribution, motors, inverters, and drivetrain for our autonomous heavy duty vehicle platform.

This is a highly cross-disciplinary, safety critical role. You will define system level architecture, drive performance and efficiency from first principles, and deliver production ready hardware that operates reliably under demanding real world conditions.

Key Responsibilities

  • Own end-to-end development of the electric powertrain system, including battery pack, HV architecture, motors, inverters, and drivetrain

  • Define system architecture and key tradeoffs across performance, range, efficiency, thermal management, and durability

  • Lead battery system integration, including pack design requirements, thermal strategy, HV safety, and interface with BMS

  • Drive system level modeling and analysis (energy consumption, thermal behavior, duty cycles, and degradation)

  • Collaborate closely with controls, autonomy, electrical, and thermal teams to ensure seamless system integration

  • Lead validation strategy and execution, including component testing, battery validation, vehicle testing, and durability testing

  • Support prototype builds and vehicle bring-up, including hands on debugging of HV and powertrain systems

  • Own supplier technical relationships for battery systems, motors, inverters, and drivetrain components

  • Identify and mitigate key risks across HV safety, thermal limits, and system reliability

  • Set engineering standards, review designs, and raise the technical bar across the team

Minimum Qualifications

  • 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 considerations

  • Proven track record delivering hardware from concept through validation

  • Experience with system modeling tools

  • Hands-on experience with prototyping, testing, and debugging electromechanical systems

  • Ability to operate independently and make high quality engineering decisions under uncertainty

  • Strong cross-functional collaboration and communication skills

  • Eligible to work in the United States

Preferred Qualifications

  • Experience with heavy duty trucks or commercial EV platforms

  • Experience with battery pack design, integration, or validation

  • Experience with BMS, HV distribution, and thermal management systems

  • Experience with inverter/motor integration and controls

  • Familiarity with automotive standards (e.g., ISO 26262, SAE, FMVSS)

  • Experience scaling systems from prototype to production

  • Experience working in fast-paced startup or product development environments

Additional Information

As part of the interview process, we may use Artificial Intelligence (AI) tools to compare your qualifications and experience to the job description. A human reviews all AI output and makes a final hiring decision. Humble Robotics does not rely on the output to make any employment decisions. Some applicants may have a legal right to opt-out of the use of AI as part of our interview process. Contact [email protected] to exercise this right or if you have further questions on the use of AI tools in our hiring process. 

Humble Robotics is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, national origin, gender, age, religion, disability, sexual orientation, veteran status, marital status or any other characteristics protected by law. Humble Robotics will consider qualified applicants with arrest and conviction records in a manner consistent with local ordinances.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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