A Gigya developer specializes in integrating and managing Gigya's Customer Identity Management platform. They work on creating personalized online experiences for users by implementing features like social login, registration, and customer profile management. Their responsibilities include creating and managing user profiles, integrating social networks, and ensuring data privacy and security. The developer also uses Gigya APIs to customize the platform according to the client’s needs. Additionally, they troubleshoot and resolve issues related to the platform, update its functionalities, and maintain its performance. Understanding of languages like JavaScript, HTML and CSS is crucial in this role.