* Have at least 3-year experience working as a Ruby developer.
* Experience with at least one Javascript frameworks among Angular, Backbone, Ember, React, NodeJS, etc.
* Experience with HTML5 and CSS
* Good knowledge of OOP, PostgreSQL, MySQL, jQuery, Ajax
* Hand on experience on building products from scratch, etc.
* Good English reading and writing
* Proactive to take ownership and single-handedly handle problems if required