This is entirely dependent on the company. Netflix has one level "Senior Software Developer". My former employer only went up to Principal Developer. My current

This is entirely dependent on the company. Netflix has one level "Senior Software Developer". My former employer only went up to Principal Developer. My current gig has one Senior Staff Engineer, me. The thing is, I didn't get better in the month between leaving my last gig, and starting this one. So these titles are a bit ambiguous.