Hiring a Github developer is beneficial as they are generally well-versed in version control systems, which is crucial for managing code changes and collaboration. Their involvement with Github often indicates that they are active in the developer community, contributing to open-source projects, which can be a testament to their skills, commitment, and adaptability. You can also review their code, giving a transparent view of their proficiency and style. Furthermore, they are likely to be familiar with continuous integration/continuous deployment (CI/CD), enhancing efficiency in software development. Overall, a Github developer can bring valuable technical expertise to your team.