Kirsty Nathoo is the CFO of Y Combinator. As CFO, she holds the keys to the kingdom – literally. Not only does she control and manage Y Combinator’s internal finances, from paying bills to helping organize demo days to actually making sure Y Combinator’s money is wired to startups from the proper accounts; but she helps YC startups coordinate outside financings, tax issues, incorporation and other fiscal matters. She’s the financial brains behind the entire operation, with YC partner