[neerkumar]

I have never worked as a quant, but I have got a couple of job offers a few years ago when interviewing at the end of grad school.

Things might have changed in the last 5 years or so, no idea. But back then, in my experience, you didn't need any financial background or knowledge. The core of the interview was puzzles (way harder than what tech companies used to ask) and algorithms in whichever language you wanted (a bit easier than tech). Theoretical knowledge of statistics was also required to pass the interview.

To be honest, I hope by now they changed the interview format. I doubt that structure would actually help them identify the best candidates.