Geoff Ralston is a well-known angel investor, entrepreneur, and computer science expert. He currently serves as the President of Y Combinator, the world-renowned startup accelerator. With a Masters's degree in Business Administration from Insead and a Masters's degree in Computer Science from Stanford University, Ralston is a talented individual with a lot of experience in the tech industry.

Ralston has held numerous positions in several leading companies, including Lala, Yahoo, Four11, and Hewlett Packard Enterprise. He was the Founder and Partner of Imagine K12, an edtech startup incubator that merged with Y Combinator, where he serves as President.

In addition to his professional experience, Ralston has mentored countless startups and entrepreneurs in Silicon Valley. He has also served as an advisor and judge at Cleantech Open, a program that promotes clean energy startups.

Overall, Ralston is a well-respected figure in the business world, especially in the technology and startup communities. With his vast experience, expertise, and passion, he continues to make a significant impact on the industry and inspire many entrepreneurs worldwide.