Basically, the interview with CTO is about designing a specific design pattern. He provided 3 variable names in badly format code and expected you to figure out the pattern by yourself. Overall, he provided minimum to no information whatsoever.
Sigiloso
Very unresponsive to feedback and comments. The interviewer had his own idea and pushed it through the whole interview despite the task being very open to design interpretation. The solution should be concurrency and error defensive. Despite asking several times, no information about the problem or conditions were given at the start.