I would like to work in KSA but I don´t have ESL certificati...

A lot of schools in KSA that are in need of English teachers. However, most of the schools are hiring native speakers. We are on the same situation, what I did, I enrolled in EFL short-term course so I could have the certificate..Its really a must.Try online studies or look for a school that offers the course.

Thanks for the reply Julita. By the way, I am a native American speaker.

Hi :)
Just having the degrees will be enough, though they are certificate crazy over here, so it wouldn´t hurt to get a tefl.