A Site Reliability Engineer is responsible for ensuring the reliable and efficient operation of a website or software system. They focus on optimizing and maintaining the system's performance, scalability, and reliability. SREs bridge the gap between development and operations, utilizing both software engineering and system administration skills. Their role involves automating processes, monitoring system health, responding to incidents, and implementing solutions to enhance the overall reliability and performance of the infrastructure. If you are interested in getting into this field, then check out this Balaji’s video. How he became a Site Reliability Engineer with a good salary hike just after completing Intellipaat's Advanced Certification in Cloud Computing.