Month long. Few phone calls, home code assessment, live coding and number of interview in their office. No offer as $130,000 annual is too much for Senior Software Engineer, according to their beliefs.

Short at home coding exercise and in person interview. Pair programming exercise with one engineer and some whiteboard design sessions with others. Interviewed here twice, was rejected the first time because "we liked you but you wouldn't learn the language fast enough." Fast forward a few years, I learned that language at another job. This time I was rejected because "The team felt you didn't know any more than they did." They're far too picky and don't know how to hire, you'll just waste your time so don't bother.