Full stack developers work across the browser and the server. You may build a React screen in the morning, add an API endpoint in the afternoon and debug a deployment in the evening. Employers expect comfort with JavaScript/TypeScript, a backend language, a database and Git. A small portfolio project with authentication and a real database is more convincing than a long list of frameworks. Salaries range from ₹35,000 to ₹85,000 per month depending on experience. Clarify the actual frontend/backend split, because some “full stack” roles are mostly maintenance.