Digite Infotech

Description : We are looking for a passionate Embedded Hardware Design Engineer with 1-2 years of experience in developing IoT controller hardware for agricultural and outdoor field applications. The role involves end-to-end hardware design, sensor and actuator integration, and low-power, battery-operated system design. You will collaborate closely with firmware, mechanical, and field testing teams to build reliable, production-ready IoT solutions that operate efficiently in harsh environments.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 (ref:hirist.tech)