The entrepreneur and investor is all about making the biggest impact. : Click the Follow button on any author page to keep up with the latest content from your favorite authors. Alexis Ohanian is just 34-years-old, but he has had many different careers since he came to Silicon Valley in the mid-2000s. He co-founded Reddit, is a bestselling author and has had successes building companies in the world of ecommerce, travel and venture capital. He is also part of a veritable power couple with his wife, tennis phenom Serena Williams, whom he married last year.