The interview process at BCG was rigorous and consisted of multiple rounds. It began with an online application and a numerical reasoning test. Following this, there were two rounds of case interviews, each with a combination of personal experience questions and business problem-solving cases. The first round was focused on problem-solving and communication skills, while the second round involved senior consultants and partners who assessed strategic thinking and creativity. Throughout the process, the interviewers were professional and supportive, creating a challenging but engaging experience.