Quite at ease. Like friends chatting with each other. Asked your previous experience, your education background, and some prof questions. Boss himself more like experience oriented, so a smart person would be a most fit. Python questions and VBA are recommended. Building tools if you can make most of the processes smooth.
Interview questions [1]
Question 1
What kinds of signal do you use in your strategy of statistical arbitrage
I applied online. I interviewed at Saratoga Capital Management (Singapore) in May 2012
Interview
I cold emailed the firm. CV and Cover letter was picked up by the Partner.
Was invited to a face to face interview with the the Partner. Mostly questions regarding fit and motivation.
Invited to a second and final round of interviews with the same partner. Again, mostly fit and was offered a job.