Preferably certified Sitecore Developer.
Very strong knowledge and experience with ASP.NET (C#) Web Forms.
Demonstrable and extensive experience in front-end web development: JS, AJAX, CSS3, HTML5, responsive frameworks, etc.
... A real team player who is willing to listen, as well as share knowledge and ideas to the rest of the team and the wider organization.
Working knowledge of ASP.NET MVC and other languages and frameworks (PHP, AngularJS).