Hiring an Internet Explorer developer comes with several advantages. Firstly, they have a deep understanding of legacy systems. Many businesses still use older systems that are only compatible with Internet Explorer. The knowledge of these developers can be invaluable in maintaining and upgrading such systems.

Secondly, Internet Explorer developers are well-versed in ensuring cross-browser compatibility. Not all browsers interpret code in the same way, so a developer with expertise in Internet Explorer can ensure your website or web app functions optimally across different browsers.

Thirdly, they possess proficiency in using developer tools specific to Internet Explorer. These tools are essential for debugging and optimizing web applications, which can ultimately result in better performance and user experience.

Fourthly, their experience can be beneficial in terms of accessibility. Internet Explorer has unique accessibility features that, when leveraged properly, can make your website more accessible to a wider audience.

Lastly, Internet Explorer developers often have a broad skill set, as they usually have to adapt to new technologies and techniques while also maintaining their knowledge of older systems. This adaptability can make them a valuable asset to any development team.