1. Walk me through your last customer-facing role. What did a normal day actually look like?
What a good answer looks like: Concrete texture: channels handled (calls, chat, tickets), daily volume, the mix of routine vs escalated contacts, and the tools used (Zendesk, Intercom, a POS, even a shared inbox). Strong candidates volunteer numbers unprompted — "about 40 tickets a day, mostly billing" — and describe the shape of the queue, which signals they truly worked it rather than shadowed it.
Red flags: Vague generalities ("I helped customers with their problems"), no sense of volume, or describing only the pleasant parts of the job.