A BPEL (Business Process Execution Language) developer designs, develops, and implements web services and business processes using BPEL, a language for specifying business process behavior based on web services. They define and manage the interaction of services by creating executable business processes. They also debug and fix issues, ensuring the smooth functioning of the software. They work closely with business analysts and stakeholders to understand business requirements and translate them into technical specifications. Moreover, they are responsible for creating technical documentation and conducting testing to ensure the integrity and quality of the developed solutions.