Well there's this bit "Hiro cuts across the Hacker Quadrant, headed for Da5id's table. He recognizes many of the people in here, but as usual, he's surprised and disturbed by the number he doesn't recognize -- all those sharp, perceptive twenty-one-year-old faces. Software development, like professional sports, has a way of making thirty-year-old men feel decrepit." which:
Hiro cuts across the Hacker Quadrant, headed for Da5id's table. He recognizes many of the people in here, but as usual, he's surprised and disturbed by the number he doesn't recognize -- all those sharp, perceptive twenty-one-year-old faces. Software development, like professional sports, has a way of making thirty-year-old men feel decrepit.
Which suggests he's in his 30's. So So from his dad's age and Hiro's it suggests 2013-2022.