hopTo Inc., Campbell, California (<a href="http://hopto.com/careers" >)
I'm a team lead at hopTo, and we're currently hiring mobile developers and people with a Windows background.  The latter is my team, and if you're someone who's bored with his/her current enterprise-level job coding for the Microsoft stack and want something more challenging, I'd love to talk with you.
Our product involves some low-level hackery in C++/C# on the Windows side, stuff like coding messages ourselves and feeding them to window handles, custom drivers, and other bits.  We need people who have a solid background with Windows architecture (MFC, Windows Forms, etc) and the drive to learn the rest.  If you're looking to move up from a standard .Net job, this is a way to do it.
In return, we offer solid salaries and stock shares (we're a public company!), a flat hierarchy with a great team, four weeks off, and very competitive games of FIFA on our XBox.  Additionally, we hate overtime.  I've never once been asked to stay late and crunch, though my work is fun enough that I'll sometimes hack on the weekends anyway.
If you're interested, please email a resume to andrew at hopto.com, along with a link to something you've built (either a web site, or a Github repo, or whatever).