Paytm Founder and CEO Vijay Shekhar Sharma participated in 'Me at 20' challenge on Twitter by posting a photo of himself from the "office opening day puja". The 41-year-old founded One97 Communications, the parent company of Paytm, in 2000. Sharma also posted a photo from his first trip to Kasauli and another picture from his trip from Kasauli to Shimla.