Hiring a keyword-driven developer is beneficial for enhancing your software testing process. They possess expertise in keyword-driven testing, an approach that separates test case design and execution. This method improves efficiency, as non-technical team members can create test cases using predefined keywords representing functions, enhancing collaboration. They also provide a more readable test structure, improving maintainability. Their proficiency in this testing methodology can significantly reduce the time spent on script maintenance, lower costs, and speed up the testing process, ultimately leading to a higher quality product.