Hello Srikanth,  

Software testing and development engineers have unique growth paths with similarities. Software developers may get promoted to module lead, team lead, project lead, project manager and so on depending on the company's hierarchy.

A software testing engineer will have a similar path where he/she will become team lead, project lead, project manager, test architect etc. It's a myth that there are no or little growth opportunities in software testing career.

It's a fact that few companies offer a bit lesser salary to testing engineers as compared to developers at the initial phase of career. But I've not seen this remaining a problem for longer time in career. In fact, a qualified automation engineer can draw much more salary than a developer with similar work experience (years).

There is good scope of testing also. As software is developed, it needs to be tested hence, there will always be demand for testing professionals.

Hope it hepled you!!

Thank you