I have developed websites with using Ruby On Rails. That includes portfolio, small business and startups.
Maintained Heroku servers for internal projects
Shipped code on projects with an agile, test-driven development
Extensive experience with rspec, rails, ruby, less, sass, scss, jQuery, Mustache.js, Handlebars and underscore.js
Twitter, Facebook, FourSquare API's
JSON, JSONP, XML
Using Git for version control, revisions
Heroku, Amazon EC2, Amazon RDS, Amazon S3, Apache VPC...