Square co-founder Tristan O’Tierney, who built the company's first mobile app, dead at age 35

had worked at companies like VMware, Apple, and Yahoo. O'Tierney left Square in June 2013.

Since leaving Square, he has done freelancing app development, worked as Director of Mobile for Voteraide, and pursued photography. He spent time traveling and doing photography both as a hobby and as a freelancer.that he died from causes relating to addiction, and they are awaiting an official cause of death from officials.

Business Insider has reached out to Square for a statement. Square's website does not mention O'Tierney.As an avid photographer, O'Tierney often posted his work on Instagram. Below is O'Tierney's last image he posted on his Instagram, taken in Kailua-Kona, Hawaii.

techinsider That’s young.

thisisinsider Damn.... RIP

Addiction is a tough battle. RIP

Do you need want a mobileappdesign mobile_app_ui mobilegaming MobileApp uiux design designthinking uidesign appdesign appdesigner uiuxzone apps androidapp design

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