Shopify Senior Software Developer interview questions

After applying I was quickly sent a link to book a time slot for a live coding exercise before even speaking to anyone. The live coding exercise was with 2 software engineers. You're given a straight forward problem to solve, followed by some tests that they ask you to run. It was a strange experience. We said hello and our names and then got straight into it. I found the 2 software engineers very quiet. One barely said anything other than hello and bye. The other gave a tip of logging something. I managed to solve the problem and had some time for questions and then it finished. When I asked questions at the end of the interview, I got the impression the interviewers already knew they were going to say no based on the way they answered. A few days later I got an email saying I didn't advance in the process, and nothing more, no reasons given. In hindsight I suspect it's because I started coding (writing the function definition only) before I came up with how I was going to solve it. I did this to help get my head around the problem under pressure. But who knows as they didn't offer any reasons. I found the whole process to be quick and efficient, but very transactional. Maybe because they get lots of applications, but it's very "their way or no way". They rejected a candidate possibly because they touch code before solving the problem first, but I'd be surprised if they didn't too.