Tristan O’Tierney, a co-founder at payment company Square, announced via
tweet that yesterday was his last day at the company.
O’Tierney is less well-known than his co-founders, particularly the
company’s CEO Jack Dorsey, but according to his LinkedIn profile (where he
describes himself as an iOS engineer), his accomplishments include building the
original iPhone app, as well as being a “large contributor” to its first iPad
app, the first Pay with Square product, and the Register app.
In a Quora post (answering the question, “Why does Square have so many
co-founders?”) O’Tierney writes that he joined with Dorsey and co-founder Jim
McKelvey in January 2009. (His prior experience includes working as an iPhone
programmer at Tapulous.) Apparently, in those early days the trio worked on
Square in Dorsey’s apartment, and Dorsey had to flip up his Murphy bed every
morning to make room for his co-founders.
In his tweet, O’Tierney says he’s not sure what’s next, “except for a bit
of traveling!” In a tweet directed at The Next Web’s Jon Russell, he added, “I
left on good terms. I just want to do something different. Square’s still in a
lot of brilliant hands!”
I’ve emailed O’Tierney and Square for comment, and I’ll update this post if
I hear back.
Update: Square declined to comment.
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