Hey, I'm one of the developers at LiquidPlanner in Seattle.  It's primarily a Ruby on Rails shop, with a really great development team.  Our application provides predictive project scheduling, dynamic collaboration, and easy time tracking.
If that sounds interesting to you, here's the official job posting:
Software Development Engineers
LiquidPlanner is looking for full-time developers in the Seattle area to help us build next-generation scheduling and team collaboration tools. We have an industry-leading product, a smart team and a great work environment. These positions include stock options and an excellent benefits package.
Core responsibilities
Develop advanced web applications using Ruby on Rails and Javascript
Maintain the highest levels of software quality through test-driven development
Collaborate with customers and the team to solve interesting problems
Help support and improve our production and development infrastructures
Help design features and build the roadmap for LiquidPlanner
Required skills
A commitment to quality and a pragmatic approach
Proficiency with Ruby on Rails, Javascript and HTML/CSS
Strong knowledge of SQL and Linux
Experience developing and operating complex web applications
BA/BS or graduate degree in Computer Science
<a href="http://www.liquidplanner.com/careers/#software-development-engineers" >
Ask HN: Who is hiring? (February 2014)