Does completing a certificate program help in getting a job?
Specialization in a particular field may help you stand out from other applicants if you are applying for a job in that field. This might make the difference in getting you an interview.
On the other hand, if your resume shows specialization or a lot of interest in a field unrelated to the job you're applying for, this could be a negative. A potential employer could think that interviewing or hiring you is a waste of time because you really want to be doing something else.