I'm working in India and have been asked to take an interview of someone for a particular post. I was asked as I am the only one here who uses the technology required.
I wish to know how I should refer to the interviewee considering that they are quite more experienced and older than I am. Please note that using the first name of you senior is considered quite rude here while last name is too formal/awkward.
Normally, I'd go with sir/ma'am, but I am afraid of how the interviewee might perceive it (I don't want to go down the "please dont call me sir" spiral).
I don't wish to botch this up as this is an opportunity in the end and because the interviewee might become my colleague in the future.