Jung as psychologist of religion and Jung as philosopher of religion

Is it possible to be both a psychologist and a philosopher? Is it possible for a psychologist, or more generally a social scientist, to use social scientific findings to make philosophical claims? Specifically, is it possible for a social scientist to use social scientific findings to determine the existence of God? Did Jung profess to be only a psychologist or also a philosopher? If he professed to be both, did he enlist his psychological findings to make philosophical claims? Specifically, did he enlist his psychological findings to determine the existence of God?