in short there is a feature in the app that needs to be made, people in the company that I work for create ideas and then tell the coders to do that. After they are finished they come to me and I have to analyze this feature and find the mistakes. I find the mistakes in their code and come back to them and they fix them and release the new feature to the public.
Right now I'm getting around 77k a year, in the future I can work for bigger companies and earn around 100k.
I can proudly say that you might be using the app on your phone that belongs to the company that I work for :)