A Java JavaScript LAMP SQL developer designs, implements, and manages web applications. They utilize Java and JavaScript for front-end development, ensuring seamless user interaction. They work with Linux, Apache, MySQL, and PHP (LAMP) stack for server-side operations, handling tasks like server setup, database interaction, and server-side scripting. They use SQL for managing and manipulating databases. Their responsibilities include writing efficient code, debugging, testing, maintaining software documentation, and ensuring the functionality and optimization of web applications. They also collaborate with other team members to integrate multiple systems and maintain data consistency.