Mark Zuckerberg Celebrates First Father's Day

Mark Zuckerberg may have revolutionized the Internet with the creation of Facebook, but he says he has one job title that's even more fulfilling — "dad."

The Facebook CEO shared a photo on Sunday that shows him and his new baby girl, Maxima, smiling adoringly at each other. He captioned the precious snap, "Most rewarding job I've had. Happy Father's Day to all the dads out there!"

Zuckerberg and his wife Dr. Prisicilla Chan welcomed Maxima Chan Zuckerburg last November.

The tech whiz has jumped right into family life, embracing fatherhood completely and continuing to keep the world updated on his journey through parenthood.