Hiring a C-Builder developer can be beneficial due to their proficiency in the robust C++ programming language. They can create high-performance applications, effectively troubleshoot and maintain existing software, and ensure a high level of security. Their expertise in C-Builder, a rapid application development (RAD) environment, enables them to design and develop GUI-based applications quickly and efficiently. Furthermore, their ability to integrate with databases and other technologies can enhance your system's functionality. Their skills can significantly contribute to the scalability and reliability of your software projects.