You may find Qatar a good place to search for medical jobs, to increase your chance, you need to take some steps preparing yourself to the competition.
First try to know more information about the work environment in hospitals and clinics in Qatar and identify if there is any training or exam you need to take according to your specialty. Some vacancies required Qatari license such as physicians, pharmacists and dentists. Visit the website of Hamad Medical Corporation Department of Medical Education where you can find detailed information bout the requested training.
Reach out the main hospital in Qatar, Hamad hospital is the biggest hospital in the country which operated by the government and always seeking professionals to join the staff. The hospital has a local office where you can track the announced vacancies and pick up an application form. If you are out side Qatar, use one of your friend , you need to send to him copy of your transcripts, CV and recent photo. Otherwise, try to go to the hospital website where you can find fax number and postal address to send your papers.