<p>I am a Principal Software Engineer at Amazon.</p>
<p>Prior to that, I was:</p>
<ul>
<li><p>A software engineer for a company called <a href="https://www.mastmobile.com/" rel="nofollow noreferrer">Mast Mobile</a>, doing mostly Ruby and Erlang.</p>
</li>
<li><p>A member of Dow Jones's Research and Development team, working mostly in Erlang with some Node.js.</p>
</li>
<li><p>The Optimization Team Lead at Yodle, a company in New York City that does search engine marketing for local small-to-medium businesses. The Optimization Team develops Yodle's proprietary bidding algorithm. The buzzword is &quot;Data Science,&quot; but practically what that meant was a combination of Java, Python and R.</p>
</li>
<li><p>Before that, I worked for two startups located in New York.</p>
</li>
</ul>

James Kingsbery