I applied online. The process took 2 months.

The hiring process was a bit long and quite balanced, very standard for a start-up. There was a first 30-minute call with the recruiter to talk about you and your background. Then there was a take-home exercise to do, which was not trivial. Then there was a first 3-hour on-site where you debrief the exercise for 1 hour, have a 1-hour technical interview, and then a 1-hour live kata. I completely fell apart during the kata, even though it wasn't hard, and I lost all my composure. Yet that wasn't a deal-breaker.

Then there was another technical interview with the CTO of the team that you are going to join, an interview that can be quite tough depending on the team (sysadmin and DevOps, hold on tight). Then there was a half-day in immersion mode with your team. It was a fairly classic start-up process, very standard. The hiring process was very professional, structured, and well-oiled, and above all, the people were very nice, truly. Throughout the process, you are kept informed of the next steps by the recruiter, and I don't remember any bad surprises or having to chase them excessively.

Talk about things related to code quality, TDD, etc.