Hiring an Actix developer can significantly enhance your web application's performance. Actix is a powerful, efficient Rust framework for building asynchronous applications, providing excellent concurrency handling. The developer can utilize the safety, speed, and concurrency features of Rust and Actix to create highly secure, fast, and scalable web services. Additionally, Actix developers can help in reducing memory-related bugs due to Rust's memory safety guarantees without a garbage collector. This combination of high performance and safety makes an Actix developer a valuable addition to your team.