Please make sure that u get one of the following advantages if u r shifting u r job.
1. Increase in salary atleast 30%
2. Increase in position atleast one level up
3. Entirely new domain/Project where u can learn new things.

Adding furthur you are considering relocation which is consumes time and Money.
I believe that Pay standards and work culture of qatar is vast and far more better than KSA.

Best Of Luck.

........................Please pray to Allah Subhana wa tala for guidance and take you to correct path...