John Kaster is an accomplished software engineer with extensive experience spanning over two decades in various leadership and technical roles. Currently serving at Flow since August 2025, Kaster previously held significant positions at Google as a Staff Software Engineer and Senior Software Engineer from December 2019 to November 2025. At Looker, Kaster worked as a Senior Engineer from July 2017 to November 2022, enhancing data experiences for business analysts. Kaster has also been self-employed and worked in pivotal roles at Outlier Security, WideOrbit, Transactis, Embarcadero Technologies, and CodeGear. Kaster's early career included founding Programming Tools, where award-winning software development tools were developed, marketed, and supported. Kaster earned a BSc in Computer Science, Asian Studies, and Math from the University of Wisconsin-Stevens Point between 1981 and 1985.
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