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About the Role
As the Mechatronics Engineer, you will own the machine's electrical integration and firmware, including power, motor control, sensing, wiring, and real-time control. This role is crucial for making heavy equipment behave like a precision robot, working closely with mechanical and electrical engineering teams. This is a mid to senior-level individual contributor role based at our San Francisco robotics facility, with regular field time at our GW-scale campus in West Texas.
Responsibilities
- Own the driver’s electrical integration, building on board designs and fleet architecture from the electrical engineering team: battery and power distribution, motor controllers, e-stop and safety circuits, and connectors and harnessing that survive dust, heat, and vibration.
- Select and integrate motors, drives, and actuators with the mechanical team, and tune motor control for both locomotion and the pile-driving tool head.
- Design and build the sensing stack: encoders, IMU, load and force sensing on the driving mechanism, RTK-GNSS integration, and limit and proximity sensing.
- Develop embedded firmware and real-time control, including CAN bus architecture, control loops, interlocks, fault handling, and telemetry and logging.
- Stand up the electrical test and bring-up process: bench testing, hardware-in-the-loop where it pays off, and field debugging with rigorous root-cause analysis.
- Design for the environment: EMI on a machine full of motor drives, thermal management in West Texas summers, ingress protection, and serviceability by field techs.
- Support the path from one prototype to a small fleet through wire harness DFM, documentation, and supplier management.
Requirements
- 4+ years of electrical engineering experience, including meaningful time at a robotics company or on mobile or field robotic systems.
- Deep fluency in the electrical side of robots: power electronics, motor control (BLDC, servo, or hydraulic proportional), sensor integration, and signal integrity in noisy environments.
- Hands-on embedded skills: comfortable writing firmware in C or C++ for real-time control, working with CAN or EtherCAT, and debugging with a scope.
- Track record of taking an electromechanical system from schematic to working hardware in the real world.
- Pragmatic safety mindset: functional safety, e-stop design, and interlocks for a machine that exerts serious force.
- Bias for speed and high ownership: you bring systems up from nothing and debug them in the field.
- Experience with high-power battery systems.
- Electrical control of hydraulics.
- Off-highway, agricultural, or construction equipment experience.
- Harsh-environment or outdoor robotics.
Skills
- Power electronics
- Motor control (BLDC, servo, or hydraulic proportional)
- Sensor integration
- Signal integrity
- Firmware development in C/C++
- Real-time control
- CAN bus
- EtherCAT
- Debugging with a scope
- Functional safety
- E-stop design
- Interlocks
Location
- San Francisco
- West Texas
Work Type
- Onsite
- Field time
Experience Level
- Mid-level
- Senior-level
Benefits
- Up to $15K relocation bonus
- Unlimited PTO
- Health, Dental, Vision insurance
- $1K monthly stipend for meals
About the Company
- TAR is both a hardware and software company, building massive, critical, physical infrastructure.
- TAR is working directly with one of the largest compute providers to scale and deploy 5GWs by 2028.
- We operate on high ownership, high agency, speed, first principles, and passion.