Dear Mr. Mansour,
I have extensive experience in an academic environment, having taught at universities in Saudi Arabia and South Korea. In particular, the majority of my students in KSA were from the colleges of engineering, medicine, and computer science, so I am very familiar with the type of texts with which you are concerned.
I am fast and efficient, and I guarantee that you will be completely satisfied with the quality of work that you receive. Thank you very much for taking the time to read my bid, and I look forward to working for you.
Warmest regards,
Chris