Lengthy and solid. But there were several drawbacks:

• The engineers conducting the technical interviews should be handpicked to be those with solid communication and social skills, as some were quite awkward and grumpy, and did not put candidates at ease.
• You go through three rounds of coding exercises, and if you perform perfectly in two out of three, all of the results are discarded (apparently meaning you don't know how to code).
• The scheduling was all over the place, and there was a lack of communication (interviews were rescheduled last minute and at odd times).

Why are you looking for a new job?