Amex interview questions

Did three rounds of interviews with them and between each round they took over two weeks to respond to me. Unprofessional and anxiety provoking. Either HR is extremely unorganized and untimely or they just don't care.

HR was very kind and transparent in their communication. Cleared 3 rounds and received feedback that they required more technical knowledge. The in-person round lasted for an hour. It could have been shorter if they didn't think there was enough technical knowledge and saved everyone some time.