Arment worked as lead developer of the Tumblr microblogging platform and social networking website from its founding in February 2007 until September 2010, when he left to concentrate fully on Instapaper, a bookmark and reading service.
Arment worked as lead developer of the Tumblr microblogging platform and social networking website from its founding in February 2007 until September 2010. He left to concentrate fully on Instapaper. He left to concentrate fully on a bookmark. He left to concentrate fully on reading service.