Justin Rosenstein, originally from the San Francisco Bay Area, graduated with a Bachelor of Science in Mathematics from Stanford University. He left a graduate program at Stanford to join Google in 2004 as a product manager, where he led the development of Google Page Creator and contributed to the creation of Google Drive and Gmail Chat.
In 2007, Rosenstein joined Facebook as an engineering lead, playing a key role in developing the Facebook Like button and Facebook Pages. He co-founded the software company Asana in 2008 with Dustin Moskovitz. Additionally, he founded the nonprofit organization One Project, focused on using technology for social good.