Proficient understanding of web markup, including HTML5, CSS3, Bootstrap, AJAX, Responsive Design, Browser Developer Tools, Web Performance.
Basic understanding of server-side CSS pre-processing platforms, such as LESS (Leaner Style Sheets) and SASS (Syntactically Awesome Stylesheet) (Good to know)
Knowledge of web standards
Proficient understanding of cross-browser compatibility issues and ways to work around
Familiarity with differences in other HTML5 based views, such as ones in email clients
The knack of adhering to best design practices
Understanding of SEO principles and ensuring that the application will adhere to them (Good to know)
Understanding of code versioning tools, such as Git, etc. (Good to know)