Plumbers in the GCC usually are from Asia and rarely are qualified to the level required in Europe, Australia or America.

Perhaps your friend is thinking you might get a job as a management type? As a plumber, I would think your job prospects would be few as your salary expectations would be too high.

Most plumbers here would be making at best QAR3,000 - QAR5,000 (if they're just doing plumbing).

I don't know about the construction companies but would imagine if they're looking for someone with Western qualified plumbing credentials they'd be looking offshore already.