A LAMP-based developer designs, develops, and maintains web applications using the LAMP stack, which includes Linux, Apache, MySQL, and PHP. They are responsible for writing server-side web application logic in PHP, developing back-end components, connecting applications with other web services, and supporting front-end developers by integrating their work with the application. They also manage the database using MySQL, ensuring data consistency, security, and availability. They often work with Linux servers and use Apache to deploy and manage websites. They troubleshoot applications, provide software support, and keep abreast of the latest industry trends.