Mr. Lee had recently moved to Miami, according to his father’s Facebook post. Rick Lee wrote that he moved in with his son after Bob’s mother died in 2019, and that they had made the move to Florida in October. It was not known how long Mr. Lee had been in San Francisco on his latest visit or where he was staying.
“Bob would give you the shirt off his back,” his father wrote in a Facebook post. “He would never look down on anyone and adhered to a strict no-judgment philosophy.”
His brother, Tim Oliver Lee, also posted on Facebook about his brother’s death. “I was so fortunate to grow up with him, and I feel like I’ve lost part of myself,” he said.
At the time of his death, Bob Lee, 43, was the chief product officer of MobileCoin, a cryptocurrency start-up based in San Francisco. He was focused on improving financial systems, giving people more privacy in their transactions and allowing them to send money across international borders without paying steep fees, said those who worked alongside him, in an outpouring of memories and anecdotes about Mr. Lee on social media on Wednesday.
To do so, Mr. Lee tapped his deep experience in the technology world. Before he joined MobileCoin in 2021, he was the chief technology officer of the payment company Square, which was renamed Block in 2021. There, he was instrumental in the creation of Cash App, a service that allows users to quickly send and receive money from their phones.