A Jenkins Developer is responsible for setting up and managing Continuous Integration/Continuous Delivery (CI/CD) processes using Jenkins. They design and develop automated pipelines that build, test, and deploy code for various applications. The developer takes charge of integrating different tools with Jenkins to streamline software development, testing, and deployment. They also maintain and upgrade the Jenkins environment, troubleshoot build failures, and work closely with development teams to identify and fix issues. Furthermore, they ensure code quality by implementing best practices, manage code repositories, and develop plugins for specific tasks, contributing to efficient and error-free software development.