Proven Experience in CMS, HTML5, CSS is must skill
Used umbraco as a CMS for building web applications, not static website.
Writing HTML, CSS, and JavaScript. Being up on latest practices is a must, e.g., HTML5, CSS3, and ECMAScript 6 (minimum) A relevant back-end programming language C#.
API development using .net core, WCF service, MVC and
SQL server Database design and management, including being up on the latest practices and associated versions
Server management and deployment for the relevant environment
Familiarity with a relevant and globally supported framework jQuery, angular js,Angular, node JS, React JS, etc...
Familiar with Bootstrap, flex design concepts.
Strong knowledge in OOPS and design patterns.
Thorough understanding of user experience and possibly even product strategy
Experience implementing testing platforms and unit tests