Site Reliability Engineering is a similar approach to DevOps for developing software and maintaining its Lifecycle. A professional employed to undertake SRE is called a Site Reliability Engineer. They ought to know both the development and operations side of things. A good SR Engineer will be a software engineer having sound IT operations knowledge or a Sysadmin or IT operations guy with a good grip on software engineering or software development. Because by being an SRE you need to spend 50% of your time, developing software, automating it, and the rest 50% will be spent in testing and deploying it. Site Reliability Engineering is all about taking a software engineering approach to infrastructure and operations problems.
If you wish to advance in your career like SRE, which is very similar to DevOps, I would suggest you enroll in a DevOps certification course from Intellipaat which offers you industry leading the instructor-led course and guided projects and exercises to enhance your practical skills. Also, watch our YouTube video on DevOps vs SRE to better understand that difference.