Zillow

Zillow is already one of the best tech companies you can work for, and they are always striving to be even better. They treat their employees like responsible adults (discretionary time off, rare after-hours work, etc.). Zillow is also great because it allows you to grow your career the way that you want to; you aren't forced to take a management role to progress.

Some of the release/engineering processes can be frustrating. Also, I disagree with the way they've historically chosen development managers. That being said, that's another area where I think Zillow is trying to improve.

Stop promoting your strongest developers to management roles. Their technical skills are needed, and they usually make poor managers.