A Node.js developer with three years of experience builds, maintains, and optimizes server-side applications using the Node.js framework. They work with front-end developers to create web and mobile applications that meet client requirements. Responsibilities Develop applications: Design and implement server-side applications using Node.js Optimize performance: Use optimization techniques to improve the performance of Node.js applications Integrate with external services: Connect Node.js applications with APIs and third-party services Collaborate with others: Work with front-end developers to integrate their work into the application Test and debug: Run unit and integration tests, and identify and fix bugs Maintain code quality: Ensure code is efficient, robust, and maintainable Secure applications: Set up applications on cloud platforms and implement security measures Support front-end developers: Integrate front-end elements into the application Skills and qualifications Proficiency in JavaScript and Node.js Experience with databases like MySQL Familiarity with web development frameworks like Express.js Understanding of RESTful APIs, project building, and version control Experience with testing and debugging