What is the difference between a Frontend Developer and a Backend Developer?
Frontend developers focus on client-side user interfaces, browser APIs, visual layouts, state management, and user interaction using HTML, CSS, JavaScript/TypeScript, React, and Next.js. Backend developers focus on server-side architecture, REST/GraphQL APIs, relational and NoSQL databases, authentication, security, and cloud infrastructure (Node.js, Python, PostgreSQL, Redis, Docker).
Day-to-Day: Frontend devs build responsive component libraries, optimize Core Web Vitals, and wire API data into UI views. Backend devs design database schemas, write transactional business logic, manage API caching, and scale server pipelines.