I will be 63 in a few days. If 37+ makes you an old geek I must be ancient. At least I am employed.
You have to be 35 to be President, so being generous let's take a 35 year old now, so they were born in 1982 give or take (2017-35).
They would have had to get a programming job right out of HS and even then best case it would have been halfway through 1999. More accurately, they likely didn't enter the workforce until 2004 or 2005.