PALO ALTO (CBS SF) — Facebook founder Mark Zuckerberg is taking some time off from running the social network to be a dad, and the CEO posted some adorable photographic evidence that he’s hard at work in his new role.

Zuckerberg posted the picture from Palo Alto Tuesday with the caption “Full of joy with little Max.”

Zuckerberg and wife Priscila Chan welcomed Max into the world just a week ago, and also pledged to give away nearly all of his fortune to charitable causes.