About the Role

We are looking for a hands-on Embedded Firmware & Hardware Engineer to develop and support connected embedded products from concept through prototype, testing, deployment and customer delivery. The role is primarily focused on embedded firmware development, with strong responsibility for embedded hardware and PCB design, system integration, debugging, and product development. The engineer will also participate in customer technical discussions, product demonstrations and business-development support.

Key Responsibilities — Embedded Firmware

● Develop and maintain firmware for ESP32, STM32 and other microcontroller-based platforms.
● Develop robust Embedded C/C++ using structured, maintainable and modular software architecture.
● Implement state machines, timers, interrupts, GPIO control, peripheral drivers and application logic.
● Develop bare-metal and RTOS-based firmware as required; FreeRTOS experience is desirable.
● Develop and debug I²C, SPI, UART, RS-485/Modbus, CAN, USB and other embedded communication interfaces.
● Implement sensor acquisition,



signal processing, actuator control and real-time control logic.
● Develop Wi-Fi/BLE/IoT connectivity and device-to-cloud communication where required.
● Implement OTA firmware updates, configuration updates, boot/recovery mechanisms and protected update strategies.
● Work with Flash, NVS/EEPROM and other non-volatile storage mechanisms.
● Implement reliable data logging, error handling, fault recovery and watchdog mechanisms.
● Optimize firmware for timing, memory usage, reliability and long-term field operation.
● Debug firmware using serial logs, JTAG/SWD, oscilloscopes, logic analyzers and other tools.

Key Responsibilities — Embedded Hardware & PCB Design

● Design embedded hardware and complete PCB assemblies for microcontroller-based products.
● Create schematics and PCB layouts using Altium Designer, KiCad, OrCAD, Eagle or equivalent tools.
● Select MCUs, sensors, power supplies, communication IC

📌 Embedded Firmware, Embedded Hardware (Mumbai)
🏢 Entwine Technologies
📍 Mumbai