That's a valid concern. My suggestion would be this: Usually you're being interviewed in multiple rounds by multiple people. Absolutely don't ask an HR person a

That's a valid concern. My suggestion would be this: Usually you're being interviewed in multiple rounds by multiple people. Absolutely don't ask an HR person about this, and probably don't ask your future manager. Ask an engineer after a technical interview. They'll probably (a) understand why you're asking and where you're coming from, and (b) or more likely to give an honest answer.