Performance engineer vs Optimization engineer

[Bohemian]

All,
how jobscopes differ between a RF Performance Engineer and a RF Optimization engineer?
what is the basic difference between these two roles?

[Darko]

Honestly, I don't see a difference.

[smartyouth92]

It's quiet simliar, also it looks that the difference in term of Optimization you can optimize the system and make any eddition to acheive better quality wheather in performance engineer it is just to check how coverge performing within that system