During my interview with Datavant for the debugging exercise on a pre-written CSV processing script, with multiple nested classes and around 300 lines of code, I completed the task successfully but still received a rejection. The interviewer interrupted my introduction after requesting it, rushed through explanations, and spoke very quickly, making it difficult to ask clarifying questions. This gave the impression of a lack of patience and poor interview facilitation. If this reflects the company’s work environment, I feel fortunate not to have been moving with the next steps.