What kind of engineering? Designing what? How’s your local market for those positions? Is it something that can be done remotely, and thus you could apply to positions nationwide?

The really short version is that if you aren’t finding positions, you’re in the wrong line of work or location. If you’re finding positions and applying, but not getting any responses, then your resume/etc is bad. If you are getting responses but no offers, then your interview technique is bad.