OPOWER: Green start up that's beginning to mature. It's a great place for nerds that value work life balance and want to work on software that makes the world a better place.
<a href="http://opowerjobs.com/engineering" >http://opowerjobs.com/engineering</a>
SF &#38; DC offices (both in excellent location, btw)
Java, Ruby, Scala, Mysql, Javascript, HTML5
H1Bs welcome.