I'm David Joerg, I'm a software developer and entrepreneur in New York City.

I co-founded Vindigo in 1999, which was one of the first and most popular apps for mobile phones in the US. ...

Then I joined the founding team of Two Sigma Investments, which I helped build into a leading investment management company, now with over $50 billion in assets. ...

I'm now mostly retired from Two Sigma and work on personal projects:

Now I'm working on a new kind of chess app.

I served on the boards of Placed (acquired by Snap), WHOOP and currently serve on the board of Arena.

I graduated from Harvard with a degree in computer science. My senior thesis was a visual programming syntax for Prolog.

The best way to reach me is email: dsjoerg at gmail dot com. Also see the twitters.