The interviewer was nice, however the recruiter told me that they are hiring mediors, but at the end of the interview I was told that it is a mistake and they are looking for only seniors.

A recruiter contacted me. I did an initial screening call. Nothing too fancy about it: polite and correct reviewing my previous experience. Explained the nature of the job: refactoring a legacy app, mostly alone. Then I was appointed to a second interview with developers. No intro, they jumped right away into a list of IMHO irrelevant questions considering the role: what was my favourite stack, whether I knew a specific library or component, what did I think about a specific technology. I have 20+ years of experience, including my own tech company and a FAANG, a big part of it as an architect of new and legacy apps, but I was discarded because of “inconsistencies between my experience and the libraries they use”. I don’t think they know what they need.