An IT professional who works on a collection of JavaScript technologies to develop web applications is called a MEAN stack developer. The four fundamental technologies that comprise MEAN are :

• MongoDB – It is a NO-SQL Tool used mostly with unstructured datas with JSON / BSON formats.
• ExpressJS – It is a mature and light-weighted server framework that is specially created to build single and multi-page web applications. It makes use of the Pug engine for giving support for templates.
• AngularJS – It is a new age Framework used in Website designing and development
• Node.js It is a server based Technology (an open source, cross-platform run-time environment for developing server-side and network applications)

The opportunities for MEAN STACK developers are currently at their prime in India.