Valeo Software Engineer Interview Experience: C code tracing and embedded protocols

I started with an online assessment on HackerRank, which immediately set the tone. It leaned heavily on data structures and algorithms in C, with many code-tracing prompts where I had to predict how snippets would behave and whether they would compile. There were also multiple-choice questions on embedded systems and communication protocols, especially UART, SPI, and I2C. After the assessment, I…

Shared by a candidate · reported Aug 2026. Interview formats change; use it as a guide, not a script.