OpenX is still hiring - we're looking for a wide variety of positions (http://openx.org/Jobs), one of which is to work with me on the Market (http://openx.org/market). If you're into scaling high-volume back-ends doing non-trivial work on every request using a variety of languages from Java to Erlang - you might like working on the Market. If you're interested send me an email (joel at openx dot org). The location is Pasadena, CA, and you need to work on-site. Relocation is available.