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I am a co-founder at Emobie Labs, which is led by my wife, Lindsey Arnold. We are bringing affordable social robots to children for the purposes of therapy, tutoring, and play.
I started my own trading firm in Seattle called High Amplitude Trading Capital (HatCap). The name derives from the fact that we provide liquidity to relatively illiquid markets, operating at a much lower frequency than that of most automated trading firms, but aiming to realize a much larger profit margin. We develop and operate a semi-automated trading system.
From August, 2008 to March, 2014, I was a Software Engineer at AMA Capital, a hedge fund founded in Los Angeles and now based in downtown Palo Alto, CA. AMA develops their own software for automated trading in the foreign exchange market. We were always a very small team (for several years I was the only employee), and I had to opportunity to contribute to all aspects of the system, from developing new strategies to analyzing their results. While I've long desired to start my own company, leaving AMA was difficult, because I cannot imagine ever finding a better job. The team is incredible, and they're always looking for strong engineers with an interest in finance. See the Careers page for more details, and feel free to contact me to discuss it further.
From March, 2008 to July, 2008, I was a Software Engineer at Intentional Software in Bellevue, WA. Intentional Software is developing a novel language and workbench to better capture the intentions of both domain experts and programmers. Two good sources of information about the company are a Technology Review article and their OOPSLA 2006 paper.
From July, 2006 to March 2008, I developed core back-end functionality at Palantir Technologies. Overhauled revisioning code to reduce both runtime and space complexity. Developed a system which enabled federated searches against external data sources, and which propagated changes from the external data sources to our main server. Added group-based access control which supported discovery, read, write, and ownership permissions at the level of individual properties.
From February, 2005 to July, 2006, I was a Software Development Engineer at Amazon.com in Seattle, WA. I worked on a system that monitored millions of competitor offerings across hundreds of competitors, and that surfaced the data internally through both a service and a website. I also helped to deliver the Pre-Order Price Guarantee feature.