Mechatronics Engineer

We're Hiring: Mechatronics Engineer
Experience: 2+ years
Domain: Motion Control | Embedded Firmware | Electromechanical Systems
Freshers are not eligible.
Candidates must be willing to relocate.
About this role
You will own the motion system of a remotely operated, stabilised pan-tilt platform for defence use. That covers the hardware (motors, drives, sensors, harnessing) and the software (control loops and real-time firmware) that keep a payload pointed precisely at a target.
You need working depth in both hardware and software. Core mechanical design is handled by a separate Mechanical Design Engineer.
This is a hands-on hardware and firmware role, not a simulation or documentation role.
What you'll be doing
Hardware

• Size and select motors, gearboxes, encoders and brakes against torque, speed, accuracy and weight budgets
• Integrate and commission BLDC/PMSM motor drives, IMU and feedback sensors on a two-axis platform
• Define wiring harnesses, connectors and power distribution for a battery-powered system
• Build test rigs and measure backlash, friction, pointing accuracy and repeatability
  

Software

• Design position, velocity and current control loops and IMU-based stabilisation
• Write real-time control firmware in C/C++ on microcontrollers (STM32 or similar)
• Implement operator control modes, travel limits and safety interlocks
• Take low-latency tracking commands from the vision software and close the loop on them
  

System

• Tune the complete system on real hardware for pointing accuracy and smooth tracking
• Support environmental, EMI/EMC and field trials, analyse the logs and fix what they find
  

Mandatory skills and experience

• 2+ years of hands-on work on robotic or electromechanical products (robotics, gimbals, drones, automation, EV or defence), covering both hardware and firmware
  

Hardware

• Actuator sizing and selection: BLDC or servo motors, gearboxes, encoders or resolvers
• Motor drivers and interfaces: CAN, RS-422/485, SPI, UART
• Able to read electrical schematics and mechanical drawings
• Comfortable with oscilloscopes, power supplies and data loggers
  

Software

• Embedded C/C++ on microcontrollers, with an RTOS or bare metal
• Control fundamentals: PID, cascaded loops, feedforward, and BLDC/PMSM control including FOC
• IMUs, encoders and sensor fusion (complementary or Kalman filters)
• MATLAB/Simulink or Python for modelling, tuning and test scripts
  

Good to have

• Experience with gimbals, pan-tilt units, antenna positioners, drone flight controllers or robotic arms
• Working knowledge of CAD (SolidWorks or similar)
• Exposure to ROS 2, MIL-grade harnessing, JSS 55555 or MIL-STD-810
  

Why join us

• Work on real defence hardware that goes to field trials, not demos or PoCs
• Own a complete subsystem from design to deployment
• Work in a small team directly with mechanical, electronics and software engineers
  
  

About Astr Defence
Astr Defence is an award-winning Indian defence manufacturer building next-generation armaments and counter-UAV systems for modern battlefield requirements.

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Subject: Mechatronics Engineer