The interview was a joke. An engineer who manages the Net Maestro tool, joined the interview late, whilst me and his manager were waiting. No introduction, and he didn't have his video on. I was told it was going to be a casual chat but get thrown into a coding interview related to golang concurrency. The interview didn't even test me properly and he ended the interview after two mins. It seems to me the sole developer doesn't want to work with anyone else.