Job Descrption

I work as an R&D Engineer in a company that manufacture brake pads.
My work there has became better while the years passed by. I started working as a trainee. Before that, I worked in the production department, being in charge of the productivity improvements....tough year, the people who worked there were too much concern about the results in a short time.
Nowadays I am in the R&D Department where we develop new materials for new customers and try to improve the quality of our product. I think that this is the place where I can see myself some years ahead.

It´s nice to know you are happy with your job! These are some suggests I made and I also want to inform that I´m a Portuguese native speaker, but I hope it helps. Nice description. Keep writing. 

By the way, as a reader I´d like to konw what R&R is.