Here's a quick blurb from our jobs page:
Working at RethinkDB truly involves disruptive technology and solving interesting, challenging problems. Building caching algorithms, advanced data structures, and lock-free concurrency primitives from scratch is just business as usual here.
While everyone at RethinkDB has the determination to move heaven and earth to succeed, we prefer to get stuff done quickly and go home to our families, instead of living our lives in the office. As an additional perk to our employees, we work very hard to hire only self-motivated people smarter than ourselves.