Digite Infotech - Embedded Hardware Developer - IoT

Description

Key Responsibilities

Hardware Design & Development :

• Design and develop embedded hardware for IoT controllers used in agricultural applications.
• Create and review schematics for ARM-based microcontrollers (e.g., STM32, ESP32, nRF52).
• Select and integrate sensors (soil moisture, temperature, humidity, pressure, flow, etc.) and actuators (valves, motors, pumps).
• Design circuits for low-power, battery-operated systems with power management and energy harvesting considerations.
• Develop sensor interface circuits (analog/digital) and signal conditioning blocks.
• Design and implement wireless communication modules (LoRa, BLE, Wi-Fi) in hardware.
  

Prototyping & Testing

• Develop and assemble hardware prototypes and evaluate performance.
• Conduct bench testing, validation, and field testing of IoT devices.
• Use tools like oscilloscopes, multimeters, logic analyzers, and spectrum analyzers for debugging and validation.
• Collaborate with the firmware team to ensure seamless hardware-firmware integration.
• Optimize designs for ruggedness, power efficiency, and manufacturability.
  

Power Management & Battery Systems

• Design circuits for battery charging, power regulation, and energy harvesting (solar).
• Implement sleep/wake power modes and load control circuits to achieve ultra-low power consumption.
• Estimate and validate system battery life and current consumption under various operating modes.
  

Documentation & Release

• Create detailed documentation including schematics, BOMs, PCB design files, and test reports.
• Support PCB layout and DFM (Design for Manufacturing) processes.
• Maintain revision control for hardware designs using versioning tools (Git or equivalent).
• Collaborate with vendors and manufacturing partners for component selection and PCB fabrication.
  

Required Qualifications

• 1-2 years of professional experience in embedded hardware design for IoT or embedded systems.
• Strong understanding of analog and digital circuit design.
• Experience with ARM-based microcontrollers (STM32, ESP32, nRF52, or similar).
• Hands-on experience with sensor and actuator interfacing.
• Experience with low-power and battery-powered circuit design.
• Working knowledge of communication interfaces (UART, I2C, SPI, RS485).
• Familiarity with wireless module integration (LoRa, BLE, Wi-Fi).
• Proficiency with schematic capture and PCB design tools (Altium, KiCad, Eagle, or OrCAD).
• Knowledge of power supply design (DC-DC converters, LDOs, Li-ion charging circuits).
• Experience with hardware testing and debugging instruments.
• Strong analytical and problem-solving skills with attention to detail.
  

Preferred Qualifications

• Experience developing IoT controllers for agriculture (irrigation, weather monitoring, soil sensing).
• Familiarity with environmental and rugged hardware design for outdoor deployments.
• Knowledge of EMI/EMC design practices and protection circuitry (ESD, surge, reverse polarity).
• Experience with solar charging systems or energy harvesting circuits.
• Understanding of manufacturing processes and hardware reliability testing.
• Exposure to hardware-firmware co-design and embedded testing frameworks.
• Bachelors degree in Electronics Engineering, Electrical Engineering, or related field.
  

Tools & Technologies

• Design Tools : Altium Designer, KiCad, Eagle, OrCAD
• Simulation : LTspice, Proteus, Multisim
• Debugging Tools : Oscilloscope, Logic Analyzer, Multimeter, JTAG Debugger
• MCUs & Platforms : STM32, ESP32, nRF52, ATmega, etc.
• Communication : LoRa, BLE, Wi-Fi, RS485
• Version Control : Git