A CAPL (Communication Access Programming Language) developer creates scripts to simulate networking activities in automotive systems. They work on CANoe and CANalyzer environments for designing, implementing, and executing test routines for embedded systems. Their tasks include creating diagnostic services, developing complex simulations, and testing electronic control units (ECUs). They also analyze network communication and troubleshoot issues. Their work is crucial for ensuring the functionality, reliability, and efficiency of vehicle communication systems. They often collaborate with other software engineers and automotive professionals to ensure the system's overall performance and compliance with industry standards.