byrd technologies Python Lead Developer interview questions

At The first interview I had questions about my job experience. Also my English speaking skills were checked. At the second part, which was technical round, questions about python, databases, system design, troubleshooting issues were asked. I would say interviewers deep dived into databases design. The third part was a collaboration coding, that I failed. At this stage I was given an app and asked to write tests to cover all possible cases and fix the bug. I did not found all cases, did not fix the bug and had some troubles with understanding the interviews. The fourth part is behavioral with CEO. I did not reach this point.