Saurabh Jain leads the 'Paytm - Build for India' initiative and shares his experiences in building tech communities through social media. He emphasizes the importance of platforms like Facebook, Twitter, LinkedIn, WhatsApp, and Meetup.com for connecting with members and fostering professional networks. Jain highlights that community development focuses on helping others, and while it may not be directly about money, it can lead to networking opportunities that are financially beneficial in the long run.