SE: 3 rounds with engineers — general CS, live coding (simple), system design; communicating reasoning matters

3 rounds with the engineers and all 3 were a great experience. They are supportive and have great questions. First round is about general questions about computer science (e.g. difference between tuples and lists in Python). Second is live coding with a simple task, but it is important to communicate your thought process. Third round is about system design and again it is important to communicate your thought process.