After graduation, Kimball mostly ended his relationship with the GIMP development community. He co-founded WeGo, a company providing tools for building web communities, in 1998 and served as the company's co-CTO. While at XCF, he met
Gene Kan, who was also a member, and the two would later begin working together on a file-sharing program for the
Gnutella network, the open source Unix/Linux client
gnubile. In 2000, he created a web-based version of GIMP, OnlinePhotoLab.com, that was short-lived. The technology was subsequently folded into
Ofoto's online image manipulation tools. Kimball started work with
Google in
Mountain View in 2002 and relocated to Google's New York offices in 2004. As one of Google's engineers, he helped spearhead
Colossus, a new version of the
Google File System. He also worked on the Google Servlet Engine. In January 2012, Kimball launched the company Viewfinder along with Mattis and Brian McGinnis, formerly of Lehman Brothers. The company developed an app that allowed social media users to share photos, chat privately, and search photo history without leaving the app. The company was acquired by
Square, Inc. in December 2013. Kimball moved to Square's New York City office where he became a senior member of the company's East Coast team. While at Google, Kimball used a database known as
Bigtable and followed the development of its next generation, known as
Spanner. They formed the company Cockroach Labs to provide commercial backing for CockroachDB, an open source project he started on
GitHub in February 2014. Kimball serves as the company's
chief executive officer and also contributes to the source code development of CockroachDB. ==References==