If you are a doctor and look for a job in Australia after graduation, is it difficult to immigrate to Australia?

It depends on what kind of job you are. Nowadays, many international students work odd jobs in supermarkets and farms in Australia after graduation. If it is these jobs, it will be difficult to immigrate. If you are a professional, such as a programmer, a network engineer or a mechanical engineer, you should have no problem. You can ask your employer to vouch for you.