For Harshil Mathur, a nine-to-six corporate job was always dull, as he loves tackling new challenges every day. This drive led the IIT-Roorkee graduate to launch Razorpay in 2014, along with fellow alumni Shashank Kumar. The Bengaluru-based startup, now valued at $7.5 billion (approx Rs 63,000 crore), was once seen as an average idea and was rejected by 100 banks.