Embedded System Engineer

Main Skills:

1. Embedded C/C programming
   
   Ability to write and maintain firmware for microcontrollers and real-time hardware control.
   
2. Microcontroller experience
   
   Familiarity with platforms such as STM32 ESP32 AVR ARM Cortex-M or similar systems.
   
3. Motion and control systems
   
   Understanding of stepper motor control PWM PID control heaters fans sensors and endstops.
   
4. Communication protocols
   
   Knowledge of UART SPI I2C CAN USB Ethernet Wi-Fi or RS-485.
   
5. Firmware debugging
   
   Ability to debug using serial logs oscilloscopes logic analyzers debuggers and test firmware behavior.
   
6. RTOS or bare-metal development
   
   Understanding of interrupts timers task scheduling memory constraints and real-time system behavior.
   

Responsibilities:

1. Develop and maintain firmware for 3D printers.
   
2. Integrate hardware components such as motors heaters fans thermistors probes displays and control boards.
   
3. Improve machine safety and reliability through fault detection thermal protection watchdogs and error handling.
   
4. Support printer farm connectivity and stable communication between printers and management software.
   
5. Debug embedded hardware and software issues including firmware bugs communication failures and sensor errors.
   
6. Maintain firmware documentation including architecture pin maps configuration files and update procedures.
   

Requirements

Typical Tasks:

1. Write or modify firmware modules for motion control heater control fan control sensor reading and G-code handling.
   
2. Configure printer firmware such as Marlin Klipper RepRapFirmware or custom firmware.
   
3. Test sensors and actuators including endstops thermistors load cells filament sensors probes motors and heaters.
   
4. Debug communication issues involving USB UART CAN bus Wi-Fi MQTT serial protocols and printer-to-server communication.
   
5. Implement safety features such as thermal runaway protection emergency stop watchdog reset and overcurrent handling.
   
6. Support production firmware updates including flashing tools version control release notes rollback procedures and configuration management.
   

• Candidates should have hands-on experience with 3D printing or similar hardware systems.
  
• Candidate should be comfortable troubleshooting technical problems documenting their work clearly collaborating with cross-functional teams and working in an iterative development environment.
  

The ideal candidates should also understand that our focus is not only on prototyping but also on building reliable systems that can operate consistently across printer farms and production environments