Alexis Bowman (@ObeyMeDORK)

About Jack Dorsey

Jack Dorsey (born November 19, 1976) is an American software architect and businessman widely known as the creator of Twitter and as the founder and CEO of Square, a mobile payments company. In 2008, he was named to the MIT Technology Review TR35 as one of the top 35 innovators in the world under the age of 35

What he created

Dorsey, Stone, and Williams co-founded Obvious which then spun off Twitter, Inc. As chief executive officer, Dorsey saw the startup through two rounds of funding by the venture capitalists who backed the company. On October 16, 2008 Williams took over the role of CEO, and Dorsey became chairman of the board. On March 28, 2011, Dorsey returned to Twitter as Executive Chairman.
As the service grew in popularity, Dorsey chose improving uptime as top priority, even over creating revenue – which, as of 2008, Twitter was not designed to earn. Dorsey described the commercial use of Twitter and its API as two things that could lead to paid features. His three guiding principles, which are shared by the whole company and through its culture, are simplicity, constraint and craftsmanship.