Karl Mehta has made quite a splash in the tech world.

He founded PlaySpan, which sold to Visa for more than $200 million in 2011. He was a White House Presidential Innovation Fellow in the program’s inaugural year. He joined Menlo Ventures in 2013 as a partner to focus on finding and funding interesting and world-changing companies. He’s writing a book called Financial Inclusion at the Bottom of the Pyramid about the best ways to get financial services to poorer people.