Senior Embedded Firmware Engineer

2 days ago

Delhi, India Datanetiix Solutions Inc. Full time

Description: Senior Embedded Firmware Engineer (IoT / STM32 / LoRa) Experience: 9+ Years (Flexible for strong profiles) Industry: IoT, Embedded Systems, Wireless Communication, Sensor Devices Role Overview We are seeking a world-class Embedded Firmware Engineer to design, build, and optimize firmware for next-generation IoT sensor devices. The ideal candidate has deep experience in ARM-based microcontrollers (STM32) , low-power wireless communication (LoRa/xDot) , and scalable device firmware architecture . This role involves end-to-end ownership of embedded systems — from architecture to deployment. Key Responsibilities Firmware Development Architect, develop, and maintain embedded firmware in C/C++ for ARM Cortex-M microcontrollers. Build robust firmware using STM32 HAL, LL drivers, CMSIS , and custom peripheral drivers. Develop reusable firmware libraries, bootloader components, and peripheral drivers. IoT & Wireless Connectivity Implement low-power wireless communication using LoRa, LoRaWAN, Sub-GHz radios , or LPWAN stacks. Work with industrial IoT modules such as MultiTech xDot (MTXDOT-WW1-B15) or equivalent. Optimize packet structures, RF settings, payload formats, timing, and reliability. System-Level Engineering Analyze and optimize memory using .map, .elf, .list, .cyclo reports. Perform system performance tuning (interrupt latency, power modes, sleep cycles). Develop robust error handling, failsafe mechanisms, watchdogs, and OTA update logic (if applicable). Debugging & Validation Use advanced debugging tools: ST-Link, JTAG/SWD, Logic Analyzers, Oscilloscopes . Diagnose hard faults, stack overflows, and memory corruption. Validate firmware with stress tests, regression testing, and diagnostic tools. Build & Tooling Work with Makefile , GCC ARM toolchain, CMake, or embedded CI pipelines. Implement CI/CD for firmware builds and automated testing workflows. Collaboration Work closely with cross-functional teams (hardware, cloud, mobile, QA). Support cloud integration ( MQTT, AWS IoT, Azure IoT, custom TCP/UDP protocols ). Participate in architecture design, documentation, and technical reviews. Essential Qualifications Expert knowledge of Embedded C/C++ Strong experience with STM32 (any L0/L1/L4/F4/C0 series) Deep understanding of ARM Cortex-M architecture Experienced in peripherals → I2C, SPI, UART, ADC, DMA, TIM, GPIO Experience with low-power design for battery-operated devices Hands-on with LoRa / LoRaWAN / RF systems Strong debugging skills: SWD, JTAG, Fault analyzers Ability to derive insights from compiler artifacts: .elf, .map, .list, .o, .d, .su, .cyclo Preferred Skills (Global Standard) MultiTech xDot / Conduit device experience Exposure to RTOS (FreeRTOS, Zephyr) Python scripting for automation Cloud IoT integrations (AWS / Azure / GCP) Experience with secure boot , crypto libraries, firmware signing Experience with test automation tools Knowledge of FCC/CE RF compliance requirements

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