Just a general comment, again anecdotal. There seems to be a trend of recruiters performing bait-and-switch in SV currently.
For example, you may be hired for a technical role, but you end up doing manual work or bash script maintenance.
Another tactic (this one is pretty hilarious) is that hiring managers will continuously interview new people for the same job description, without any intention of hiring them, in order to keep the slot open. Sad, but true.