A Node.js developer specialises in building fast, scalable, and efficient server-side applications using JavaScript (or TypeScript). They have strong proficiency in asynchronous programming and event-driven architecture, enabling the development of high-performance APIs and backend services.
– RESTful APIs: building and consuming APIs
– Express.js framework (most used Node.js framework)
– Routing, Middleware, and Error Handling
– Authentication & Authorisation (JWT, OAuth)
– Request validation (using libraries like Joi or express-validator)
– CORS, rate limiting, and security headers
