[Harj]

I apologize for that. Writing personalized rejection emails for interviewees that gives clear feedback is something we're committed to and we apologize we didn't meet that goal here.

I don't know the specifics of your interview but we do often make a decision to not move forward even when we reach a working solution. That could be for a wide range of reasons (design choices are one example, or seeing engineers we move forward with covering more ground beyond an initial working solution might be another).

We know we'll inevitably get false negatives in our process, if you've any other feedback I'd be grateful to hear it. harj AT triplebyte DOT com.