Applying to Professional Masters Program after Working with Low Undergrad GPA
It depends. It all comes down to the program you are applying to and how much they rate your undergrad GPA vs work experience in the process. Just because the program guide or website says that you should have a 3.0+ GPA from a related undergrad field doesn't mean that it's necessarily a hard and fast requirement. 

I was in a very similar situation and was rejected at my first application, but there was the possibility to appeal the rejection. I called and talked with what would eventually be my adviser and was allowed to reapply with 2-3 letters of recommendation from senior co-workers (you might want to do this at the first application) and allowed into the program on a probationary period. I had to complete a set of undergrad level comp sci maintaining a B (3.0) or higher GPA before being admitted to the starting the MS level courses.