Facebook API developers are in high demand due to the numerous benefits they can bring to businesses. Firstly, Facebook API developers have a deep understanding of how the Facebook API works and how it can be used to achieve various business goals. Secondly, Facebook API developers are skilled in coding and can create custom solutions that are tailored to the specific needs of a business. Thirdly, Facebook API developers are often able to work on a project basis, which means that businesses only have to pay for the time that they need. Finally, Facebook API developers can help businesses to save money by eliminating the need for full-time employees. In conclusion, there are many use cases and benefits of hiring a freelance Facebook API developer.