I am best to engage when it comes to Ruby on Rails application Ruby on Rails Development + Ruby on Rails, Different gems + Testing Tool / Error Prevent Tool: Selenium, Watir +Technology: AJAX, ExtJS, AWS, jQuery, HTML/CSS, Bootstrap, Angular Js + Application Server: Apache + passenger, nginx + Database: PostgreSQL, MySQL, MongoDB, MS SQL Server + Revision Control System: SVN, Github + PM Tools: Jira, Joho, Basecamp + Cloud Platform: Heroku, Amazon EC2