What level is senior data scientist in LinkedIn? How about Senior staff software engineer? Thanks!
Senior staff software engineer is a really high level role. It is not based on work experience but capability. You typically interview for staff and above and if they feel you are at that level you get the job.
Senior data scientist is mininim 5 years experience. One of my friends was a few months short of 5 years and they refused to interview her. Staff data scientist was 8+ years experience.
Does Phd or part of Phd count as years of exp ?
No. They look for Industry experience. The friend I mentioned above had 7 years experience including her education, didn't consider. I am not sure if that is the norm though.