Produce maintainable code, following OO-design, Test-driven/Behaviour-driven development, readable code.
- Javascript and Coffeescript
- Backbone MVC and Jquery and one page application design
- Ruby on Rails (at least junior level)
- Marionette.js
- Jasmine / Mocha based BDD
- Sass, twitter bootstrap
- Build and maintain templates
- Git and git based workflows
Also it will be good to know
- RSpec / Cucumber
- MongoDB / Redis
- API-design
- Linux administration