Keep the beard. I had no problem getting a job with mine....it was a goatee, at the time. Having a beard is no obstacle to getting a job. If it is, for any specific interview, then that is a clear indication that you are better off without being at that company, anyway. When you are looking for a job, one of the most important things is that it is a proper "fit" for you. If you are not comfortable being who you are...and they don't accept you for the "real" you, then move on. You will ultimately not be satisfied with that job (at that company) in the long run.
Just make sure that you are properly groomed. The beard should be trim and well kept. A messy beard, like messy hair or crinkled clothes can have a negative perceptive impact. But a neat beard, like neat hair is perfectly fine.