Factual aims to be the place where people meet to share, improve, and mash-up data. Our vision is to be an awesome and affordable data provider for startups and developers, so that they can focus on innovation instead of data acquisition.
We have a terrific team that is still fairly small, and an incredible CEO (he was the co-founder of Applied Semantics, which was sold to Google and became AdSense). We recently raised a Series A from Andreessen-Horowitz, and our customers and partners include Facebook, SimpleGeo, and Newsweek. We have lots of challenging problems to work on at all layers of the stack: data cleaning and canonicalization, deduping, storage, serving, APIs, etc. If you love data, Factual is the place to be.
Ideally you know Java, Clojure, and/or Ruby, and you'll get bonus points for experience with machine learning, NoSQL, algorithms, infrastructure, and/or Hadoop.
You can also email me personally at leo -at- factual.com