HR department employees are quite incompetent and with zero technical knowledge. They were unable to provide an accurate position description or desired skills. "Somewhere in the software team" is the only thing I got. After a pretty pointless phone interview with some junior employee in HR they scheduled a C exercise with me. They would sent out a series of questions about C programming and I had 30 minutes to return the answers in a text document (no need for actual source files). The test is ok-easy and the only problem is to finish it in 30 minutes. It's 7 short questions about writing to a specific memory address, pointers, preprocessor directives, setting bits... After that was accepted they scheduled a phone interview with someone from the firmware engineering department. The interview was basically going over my resume asking details. Interview was ~ 30 minutes. I was then contacted by HR, who told me that I'm not fir for that position.