Big Tech hiring often focuses on candidate abilities first and then the specific job later. It's actually more efficient to do it that way than to start interviewing someone for a specific job that you discover they're not qualified for because you can match the candidate to a role after understanding where they fit in.

At many Big Tech companies there's a separate team matching phase that comes after the interview.

It's also helpful in general for us candidates because you can get a job without having to satisfy someone's arbitrary checklist of experience at prior companies.