We're making it dramatically easier for the world to shift to realtime apps with an exciting new database access model -- instead of polling the database for changes, the developer can tell RethinkDB to continuously push updated query results to applications in realtime.
We're hiring C++ engineers to work on performance, the continuous computation engine, and the distributed system.
RethinkDB is fun, very technically challenging, well-funded, and is growing very quickly. Intellectually, we're also PL nerds (mostly Lisp and Haskell/ML), so if that's your cup of tea you'll be right at home!