It depends into the company that you work with. If you work in a construction company that enables you to be on the field most of the time. Unfortunately, the salaries aren't well so much. Roughly 2300TL-3000TL
If you work as a design engineer on the office who makes the circuit projects and experienced then you might have good chance that you gain over the 5000TL per month easily.
It all depends, who you are, which qualifications that you have or what you can add into the company creates your salary