TL;DR: Never actually interviewed after interviewer missed scheduled call multiple times over the span of a month.
Was contacted in December via online job site for interview availability. Scheduled the call, day came, didn't receive a call. Emailed the individual, he said there were emergency meetings that had been scheduled at the same time and offered to reschedule.
Fast forward a few days, time for take 2. Once again no call. Send another email, get scheduled in January after the holidays.
Now in January. I send an email the day before to confirm the call was still on. No response. Scheduled time comes and goes, send yet another email asking if they'd like to reschedule. Get an auto-response that they are out of the office for the next 2+ weeks.
After a few days I email their general customer service/team address asking if I can be put in touch with someone else at the company to proceed with the interview process. Got a response a couple days later saying I had been passed on to the engineering team. Haven't heard anything since.
Seems like a cool product and team, but it looks like they're extremely disorganized.