The purpose of this work is to describe the process of creating a student social network web application using only one programming language - JavaScript, along with MongoDB database, Express.js server development framework, React.js client library, and JavaScript server execution environment Node.js. The mentioned technologies together form the frequently used abbreviation MERN. The MERN set of technologies today represents an industry standard, and all its components are well adapted for mutual cooperation, with the purpose of speeding up and facilitating development for developers or development engineers who use them. The fact that MERN is extremely popular also results in the large number of available user manuals, developer experiences, bug solving tips, and blogs that describe 'tricks' to resolve incompatibilities between newer versions of libraries that complement a particular development framework with libraries that are usually used together. The basic idea according to which the application was designed and created is the gathering of the essential functions of today's general purpose social networks and the communication functionalities of studomat into one application. By using such application students would be able to communicate easily, present themselves through a personal profile, and be informed about events at the college and exam deadlines related to the course and study year they are attending.