An developer designs and implements web applications using HTTP/ protocol, enhancing web performance and user experience. They work on server push technologies, stream prioritization, and header compression, which reduce latency and improve website loading speeds. The developer often collaborates with other software engineers to integrate HTTP/ features into existing applications or build new ones. They also troubleshoot and resolve issues related to HTTP/ implementation, ensuring the smooth running of web applications. Furthermore, they stay updated with the latest trends and advancements in HTTP/ to ensure optimal use of this protocol in web development.