Hiring a GNU Debugger (GDB) developer can bring numerous advantages to your software development process. Firstly, a GDB developer is proficient in identifying and fixing bugs, which is critical for the smooth operation of any software. They can quickly isolate and rectify issues, reducing downtime and enhancing user experience.

With a GDB developer on board, you can ensure the robustness of your software. They can delve deep into the program's internal structure, evaluate and manipulate its execution environment, thus enhancing its stability and efficiency.

A GDB developer's skills aren't limited to debugging. They can also provide insights into code optimization and performance improvement, as they have a deep understanding of the software's inner workings.

Moreover, GDB developers can facilitate better knowledge transfer within the team. They can train other developers in effective debugging techniques, fostering a culture of collaborative problem-solving.

Lastly, their expertise in GDB can be instrumental in developing complex, large-scale applications. They bring an added layer of quality control, ensuring that the software is not just functional, but also reliable, efficient, and maintainable.

In summary, hiring a GDB developer can significantly enhance your software's quality, performance, and reliability, and foster a more collaborative and knowledgeable development team.