ERNI is seeking an Embedded Firmware Engineer in Valencia to design, develop, and maintain bare-metal firmware for ARM Cortex-M devices. You will work mainly with C/C++ on STM32 or equivalent MCUs, implementing CAN, Modbus, UART, I2C, and SPI interfaces while collaborating with electronics designers.
You’ll read schematics, use test equipment, and contribute to hardware/software decisions. The role requires at least 3 years of embedded firmware experience and English fluency; German is a plus.