A highly skilled MERN engineer should be proficient in the following coding languages:
JavaScript (JS): This is the core language for web development in the MERN stack. It is essential for both front-end (React) and back-end (Node.js) development.
HTML (Hypertext Markup Language): While not a programming language, HTML is crucial for creating the structure and content of web pages.
CSS (Cascading Style Sheets): Like HTML, CSS is not a programming language, but it is necessary for styling and presenting web pages.
JSX (JavaScript XML): JSX is a syntax extension for JavaScript used in React to define the user interface components.
JSON (JavaScript Object Notation): JSON is a lightweight data interchange format commonly used for communication between the front-end and back-end in MERN applications.
Additional languages might be useful depending on specific project requirements or the engineer's role within the team. The main coding languages for a skilled MERN engineer are JavaScript, HTML, and CSS. They use it to build full-stack web apps in the MERN stack.