Applied online through their website. The interview process was around 3 weeks long. Fist Round was an Online Coding Challenge. Got a call back for a 30 min interview with their Senior Developer(Puzzle,Technical). Third round was an inperson interview with their team in their office at North Billerica. They gave me a tour of the place and were very friendly

I had an initial round which was positive and then a code assessment with a panel of engineers which was similarly positive. I was then warned that the next round with a manager was the one that a few others had failed. It was a behavioral round. I found the manager in this round to be needlessly contentious and disrespectful. I finished the interview thinking that I wouldn't really care to work on a team with this person. When I heard that I didn't make it through, it felt like it had been a waste of time and effort over 4 weeks to arrive at this conclusion, but I was thankful not to have made it.