Sunday (sunday.ai)

Firmware Engineer - Motor Control

Redwood City, CA

Sponsorship not specifiedDetected 114 days ago

PythonC++Machine LearningData AnalysisEmbedded SystemsRoboticsMechanical DesignElectrical EngineeringControlsTest AutomationCommunicationActuators

About the role

We're focused on an ambitious goal to make generalized robots broadly accessible, enabling households to take back quality time.
If you are ready to apply your skills to the forefront of robotics innovation, we'd love to hear from you.
You'll architect and tune the low-level control systems that translate high-level commands into precise, reliable motion.

Design and implement motor control firmware on brushless actuators
implement and tune FOC, current, speed, and position control loops
collaborate with hardware engineers on board bring-up
Build robust sensing and calibration pipelines for encoders and current/voltage measurements
3+ years of real-time embedded software development such as architecture design, microcontrollers, drivers & libraries
Design and implement motor control firmware on brushless actuators; implement and tune FOC, current, speed, and position control loops
Bring up and debug custom motor control hardware and sensors; collaborate with hardware engineers on board bring-up
Comfortable bringing up new boards, debugging cross-functional issues, and working with Product team to design around real-world conditions
Knowledge of safety mechanisms (overcurrent, overtemp, watchdogs, brownout protection) and how to implement them robustly

BS or MS degree in Computer or Electrical Engineering, related technical field, or equivalent practical experience
Strong proficiency in embedded C/C++ with a deep understanding of real-time constraints and low-level peripherals (timers, ADCs, PWMs, DMA, non-volatile memory)
Experience with encoders (of various types), and current sensors, including calibration, filtering, and synchronization for reliable control feedback
Experience with communication protocols such as I2C, SPI, UART, RS-485, CAN (FD), Ethernet, EtherCAT

Delivered at least one project from prototype phase into production
Familiarity with RTOS concepts and experience implementing them using industry-standard RTOS environments, including scheduling, interrupt handling, and real-time guarantees
Experience with Python for scripting, data analysis, or test automation
Even if you don't meet every single requirement, we encourage you to apply.
Studies show that women and underrepresented groups often hold back unless they meet 100% of the criteria - we don't want that to be the reason we miss out on great talent.

Own motor control firmware end-to-end, from prototype to production, working closely with electrical engineering, mechanical engineering, and machine learning teams
Work closely with controls and machine learning engineers to enable force-sensitive, compliant control under dynamic loads

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