Being convincing to an employer in Saudi Arabia

Depends on the employer.. Normally business attire. They look for smart people , so better be confident with your answer and the way you talk. They dont mormally turn down applicant because there is a huge shortage of whatever position you are applying.

I would like to share my experience. First and foremost it's like any other job interview. What they ask is are you a Muslim inspite of writing the religion in resume. Not that they give preference to Muslims because due to huge vacancy most of them are non Muslims. Then they negotiate with salary. Salary in Saudi is decent so you won't be disappointed. Your attire is important. Men should wear coat and tie. Women modest. They are not bothered about your English because even they speak broken English. Sometimes they reject you for no reason. Difficult to find out why they rejected you inspire being the best candidate. You need not bother about that as there are other interviews and other gulf countries. Finally I would say the correct agent introducing you to Saudi is very important. If the agent is an idiot like some Indian agents are you are bound to be disappointed. Please be careful in selecting those people and reject the useless ones. May Allah bless us for a good job.