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Published on Oct 30, 2015
Software Engineer, Instacart, and former Technical Lead, Twitter Greenville College Class of 2007, Physics and Mathematics
Jason Kozemczak is a software engineer and entrepreneur who specializes in global-scale consumer mobile applications. He was a technical lead at Twitter from 2013 to 2015, working on Twitter’s iPhone and iPad product that became a “Top App” in 2013 in the App Store and an overall top free app worldwide. He also taught fellow engineers in Twitter’s in-house training program. During his time at Twitter, the company went through an initial public offering and expanded to nearly 300 million monthly active users. In 2012, Kozemczak co-founded iOhYes, a podcast that focuses on iPhone and Macintosh software development. In early 2015, iOhYes joined the 5by5 podcast network, one of the premier tech podcast networks in the world. Kozemczak co-hosted the podcast during that time. Today Kozemczak is an engineer focusing on consumer iPhone products at Instacart, an on-demand grocery delivery service that operates in more than 15 cities in the United States. He is a 2007 graduate of Greenville College with a BS in physics and a BA in mathematics.