Hello I am a senior ruby on rails developer with over 10 years of experience. Over the last 10 years, I have been developing lots of websites with ruby on rails and javascript. My core skills are listed below: rails 3, rails 4, rails5, HTML, CSS, javascript, jquery, CoffeeScript, haml, slim, less, media query, PSD to HTML, git, TDD/BDD, Redis sidekiq, risque delayed_job, Heroku, Amazon EC2, Amazon S3 Bucket, Digital Ocean, Nginx, passenger, unicorn, restful APIs?, angular.js, ember.js, react.js, backbone.js, d3.js, bower, gulp, grunt, ... As you can see above, I am so familiar with all of the technologies related to ruby on rails and javascript. Best Regards