Hiring an aiohttp developer is beneficial for managing asynchronous tasks and handling HTTP requests in your application. They can help build high-performance, scalable, and concurrent applications using Python's asyncio library. With their expertise, they can effectively manage multiple simultaneous connections, enabling your application to perform tasks without unnecessary delays. They can also help in building real-time applications, web scraping, or creating HTTP clients/servers. Their skills enhance the efficiency, speed, and performance of your software, providing a smooth user experience.