Motor Control Firmware Engineer

BotLab Dynamics; Dadri; On-site; INR 1,200,000 - 2,400,000; Full time

Job summary

BotLab Dynamics in India is seeking a Motor Control Firmware Engineer to develop the motor-control firmware stack for compact UAV gimbals, collaborating with electronics, mechanical, and controls engineers from bring-up to product qualification.

The role focuses on low-speed, high-precision BLDC control, PID tuning, and real-time performance, with responsibilities spanning development, calibration, diagnostics, and flight-testing, ensuring robust operation across platforms.

Job description

We are building in-house UAV gimbal systems and are looking for a Motor Control Firmware Engineer to develop the motor-control firmware stack for compact UAV gimbals.

You will work closely with electronics, mechanical, and controls engineers and own the motor-control firmware throughout the product development cycle from initial hardware bring-up and motor calibration to diagnostics, validation, and product qualification.

The role focuses on low-speed, high-precision BLDC motor control for gimbal applications, where smooth and stable motion, accurate rotor-position feedback, low torque ripple, and reliable real-time performance are critical.

Key Responsibilities

• Develop real-time embedded firmware for UAV gimbal motor-control systems
• Design and implement BLDC motor-control algorithms, including commutation strategies, Field-Oriented Control (FOC), and cascaded current, velocity and position control loops
• Implement PWM generation and closed-loop motor control using Hall sensors or magnetic encoders for precise low-speed motion
• Bring up and validate motor controller hardware and firmware, including power stages, gate drivers, current sensing, sensor feedback and motor integration
• Develop firmware features for motor calibration, characterisation and parameter identification, control-loop tuning, telemetry, diagnostics and protection
• Implement communication interfaces between the gimbal, UAV flight-control systems, payload interfaces and ground-control systems
• Support firmware testing, system integration, qualification and UAV flight testing, while maintaining version-controlled firmware and relevant documentation

Required Skills

• Strong proficiency in embedded C/C++ for STM32 or ARM Cortex-M real-time systems, including peripherals such as interrupts, timers, PWM, ADC and DMA.
• Experience with BLDC motor control, including commutation, FOC, current sensing and rotor-position feedback using Hall sensors or magnetic encoders
• Understanding of PID control, control-loop tuning and real-time motor-control implementation, including control-loop timing, interrupt latency and synchronised PWM/ADC operation
• Working knowledge of motor drivers, power stages, gate drivers, current sensing and analogue signal conditioning
• Experience with RTOS-based firmware development, hardware bring-up and debugging using oscilloscopes, logic analysers and hardware debuggers
• Hands-on experience with MCU communication interfaces, including SPI, I2C, UART and CAN

Good to Have

• Experience with BLDC motor-control frameworks or open-source platforms for gimbals, ESCs, robotic actuators or industrial servo systems
• Experience with motor calibration, characterisation, parameter identification or automated control-loop tuning
• Experience integrating distributed embedded systems using CAN, Ethernet and other fieldbus or distributed communication protocols
• Experience with IMU integration, sensor fusion, motion estimation and disturbance rejection for gimbal stabilization and control
• Understanding of motor and actuator dynamics relevant to precision motion control, including inertia, friction, torque ripple, cogging and mechanical disturbances

Education & Experience

• Bachelor's degree in Electronics, Electrical Engineering, Embedded Systems, Robotics, Mechatronics, or a related field.
• 1–5 years of experience in embedded firmware, with demonstrable hands‑on work in motor control, BLDC motor systems, gimbals, robotics, UAVs, or related electromechanical systems.