Mark Ethan Trostler


I have been writing and testing code for over 20 years. From humble as a Computer Science/Philosophy double major at UC San Diego, to working at both startups (IPivot) and large corporations (Qualcomm, Intel, Redback Networks, Juniper Networks, and currently Yahoo!), I have always been dedicated to code quality. Currently as a Senior Principal Front End Engineer on the Yahoo Mail team, I help spearhead testing and quality for the latest rewrite of Yahoo Mail. I have spoken at several internal and
external conferences (Yahoo TechPulse 2010 and 2011, Yahoo’s Front End Summit, and at YUIConf 2011) about Testable Javascript and am the author of the Open Source Javascript Unit Test Environment ( and EventHub (