One correction about interviews: if the interviewee comes up with an overengineered solution without asking any questions, it's definitely a red flag.

In a good interview, the interviewee would ask clarifying questions; perhaps get told to build something simple that works; and then follow-up questions would expand towards bigger scale to test the breadth of knowledge and experience of the candidate.

The thing being evaluated is not blindly repeating random "best practices", but understanding and adapting to requirements.