I agree with the previous advice. The alliance determines if you can write the exam. They do not care what your work or residency status is. They only care if you are qualified to write the exam. You may come here on a "vacation" weekend and write the exam, yes, many do. If you pass you may get offered a job if your english is good and you are good at skype interviews. Otherwise, you need to meet some employers face to face. However, there is a way around the job issue, if you are able to show you have enough savings to move to Canada and support yourself while you find a job. This means showing the Canadian gov that you have $13,000. YOu may go to the Gov of Canada website for skilled workers and do their online calculation, but if you have experience, and you have a professional degree, speak good English, you should qualify. Best wishes!