There are three jobs from the Ruby Inside Job Board from the last month:

Rails Developer for Startup (San Francisco, CA)
A Rails Developer or Senior Rails Developer is needed at Affinity Labs, Inc, based in San Francisco, California. Affinity is a typical fast-moving startup, and they're looking for people especially with skills in areas like Ruby, Rails, ERB, AJAX, RJS, YAML, REST and Capistrano. Basically, it's a SF-based Rails developer's dream job! You can even pick which OS you work on, you get a fully stocked fridge, and bi-weekly happy hour parties.

Rails Developer, System Integration Engineer, and Platform App Developer for Clinical Research Software Co (St. Louis, MO)
Medical Decision Logix, a St. Louis based medical software company, is looking for three subtly different types of Ruby / Rails developers who are ready to "help humanity!" Requirements for each of the three jobs are available at the link.

Ruby / Rails Developers for ThoughtWorks (Atlanta, GA)
Thoughtworks, an "Agile" international development agency, is looking for Ruby and Rails developers to work on enterprise-level business applications. They provide a diverse, high energy environment, and are home to some of the best top-end developers.

If your company has openings for Ruby and/or Rails developers in any capacity, consider posting over at the Job Board. It costs $99 for 60 days of exposure, and each month I post the new jobs in a post like this for our 9500+ RSS subscribers to see. The jobs are also featured on the sidebar of every page of the RubyInside.com blog.