The interview process was very easy. Took about a week total. First you'll do an initial phone screening and if you make it past that, you will do a virtual meeting with the higher ups in your specific department. There are some deep thought questions, but overall the interview goes very smoothly.
Trendline is a really laid back company and they make sure to keep you comfortable even if you're nervous during the interview process. They didn't end up giving me an offer since they were limited to the amount they could hire, but I would consider them again if I get the chance!