Jane Rosenberg/Reuters
- FTX engineering chief Nishad Singh often disagreed with Sam Bankman-Fried over money.
- They fought over financial investments and expenses like the execs' $35 million penthouse apartment.
- Singh testified at Bankman-Fried's trial that his concerns were almost always rebuffed.
Before his arrest on fraud and money laundering charges last year, Sam Bankman-Fried was known for his unkempt, flippant appearance. Though a billionaire on paper, he'd wear a dirty T-shirt and cargo shorts while onstage at a conference with Bill Clinton and Tony Blair. It was hard to find a magazine profile that didn't mention him sleeping in a beanbag while working at FTX, his now-defunct cryptocurrency exchange.