A change control developer is responsible for managing and implementing changes in software development projects. They evaluate proposed changes, assess their impact on the project, and determine the best method of implementation. Their tasks include creating detailed plans, coordinating with various teams to ensure smooth execution, and documenting the process and outcomes of the change. They also monitor the effects of changes to ensure they meet intended goals and do not disrupt existing functions. They play a crucial role in maintaining the stability, efficiency, and quality of software products during the development process.