Began with a screening call from the companies recruiters. Questions revolved around past experience on mentioned projects, as well as confidence level in languages such as C and C++. Very pleasant interaction. Second stage was a video interview with a development team leader. The type of work was described in more detail. Afterward some technical questions specific to C were asked, as well as questions revolving around how to create tests for desired functions. Very open to questions.

Had a phone screening pretty basic stuff. Checking of things from the job description. The HR was very nice. Got called for an interview a week later. The role was with a company they recently acquired as per the interviewer. The interviewer was not at all interested asked me one questions that's it after which I was asked if I had questions this part lasted for more than the actual interview.