There is no guarantee of a job in this industry, either with or without a type rating. We are in, or trying to get into, an industry where the supply of pilots is far greater than the demand - and we can not expect a job to be handed to us on a plate just because we've completed the required training.
A type rating may or may not enhance your chances of a job. There are plenty of people out there who have got jobs without type ratings, and plenty of others who do have type ratings but still can't get a job.
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