MERN Stack Developer Intern

About the Internship

Crossing Infotech is seeking a MERN Stack Developer Intern who wants practical experience building full-stack web applications with MongoDB, Express.js, React, and Node.js. This role is suited to candidates who enjoy working across both frontend and backend development.

What You’ll Work On

• Build and improve web application features using the MERN stack.
• Create reusable React components and responsive interfaces.
• Develop or integrate REST APIs using Node.js and Express.js.
• Work with MongoDB for storing and retrieving application data.
• Connect frontend components with backend services.
• Implement basic validation and application logic.
• Test API endpoints and frontend functionality.
• Investigate bugs and troubleshoot application issues.
• Use Git/GitHub for version control and collaborative development.
• Assist with documenting technical changes and project features.

Requirements & Tech Stack

• JavaScript fundamentals
• HTML5 and CSS3
• React.js
• Node.js
• Express.js
• MongoDB
• REST API concepts
• Git/GitHub
• Basic debugging

Good to Have:

• React Hooks and React Router
• Mongoose
• JWT and authentication concepts
• Tailwind CSS or Bootstrap
• Postman
• npm
• TypeScript fundamentals
• Deployment experience with platforms such as Vercel, Netlify, or similar services

Qualifications

• Students, recent graduates, or freshers from Computer Science, IT, Software Engineering, or related fields.
• Candidates with a basic understanding of JavaScript and web development.
• Applicants who have built academic, personal, or portfolio projects using React or Node.js.
• Freshers interested in becoming full-stack developers are encouraged to apply.

What You’ll Gain

• Practical experience across the complete MERN development stack.
• Better understanding of frontend and backend integration.
• Experience working with APIs and NoSQL databases.
• Exposure to real development workflows and version control.
• Project experience that can strengthen your full-stack development portfolio.