One interview with a technical recruiter that goes over your profile and the company, followed a couple of days later by a live coding session with engineers. Zero questions were asked by the engineers and we directly jumped into coding, which was a bit strange. At one point it became obvious that one engineer was unhappy with the answer because of an edge case, but he didn't really know how to present this and just repeatedly asked "what other cases are there". Once we eventually got past that with a code change, he seemed disdainful about answering questions about the company and kept mentioning that we were running out of time.

A phone screen, coffee with one of their developers where we discussed various technical topics at a high level, then a 4-hour on-site visit, which covered a variety of topics with an emphasis on testing reasoning abilities and skill rather than superficial "gotcha" type trivia questions that are so common in tech interviews these days. I met a lot of fun, friendly, driven, intelligent people who care about making the world a better place. They did their best to make me feel welcome. Very pragmatic, effective, and even enjoyable process. Big thumbs up.