This disclosure relates generally to application development, and more particularly to systems and methods for fixing software defects in a binary or executable file. In one embodiment, a software defect management system is disclosed, comprising: a processor; and a memory disposed in communication with the processor and storing processor-executable instructions comprising instructions for: obtaining an application programming interface call for a black-box software application; determining whether the black-box software application is configured in a defective manner to process the application programming interface call; identifying a call processing application to process the application programming interface call, based on determining whether the black-box software application is configured in a defective manner to process the application programming interface call; and providing the application programming interface call for the identified call processing application.