I think this is standard salary for technician. Other companies are just giving 4000 to 6000 QR only. First, don't think of promotion. Show your ability first. Finish your probation. Maybe they already found a Mechanical Engineer. And also, from my experience, during hiring, they give lots of examination. If you dont pass the exam for Engineer position (eventhough you are experienced person, but your experience did not match the given examination), they give an option to put you in a technician position. Its up to you if you want to accept the job.