Dear Mr. Green,
I am writing to introduce a friend of mine who would be the suitable person to shoulder the translating job in the next meeting.
My friend's name is Jim Cook and I have known him for more than ten years. He always won first place in the English contest when we were still in college and after he graduated, he have been working as an interpreter for more then five years.
Apart from his expertise in the English language, he also has strong interpersonal skills. He is an easygoing person which can ensure that the conversation can not only be professional but also be comfortable.
If you are interested in hiring him, I will contact him in person and you can also arrange an interview to ensure that he is capable.
Yours faithfully,
Andy Lau
この表現は自然ですか？

Question

Dear Mr. Green, 
                       I am writing to introduce a friend of mine who would be the suitable person to shoulder the translating job in the next meeting.
                      My friend's name is Jim Cook and I have known him for more than ten years. He always won first place in the English contest when we were still in college and after he graduated, he have been working as an interpreter for more then five years. 
                     Apart from his expertise in the English language, he also has strong  interpersonal skills. He is an easygoing person which can ensure that the conversation can not only be professional but also be comfortable.
                   If you are interested in hiring him, I will contact him in person and you can also arrange an interview to ensure that he is capable.
                  Yours faithfully,
                   Andy Lau
 この表現は自然ですか？

candytufts · Accepted Answer

This is only a suggestion :)

Dear Mr. Green,

I am writing to introduce a friend of mine. I believe he is the person most suitable to shoulder the translating job in the next meeting. My friend's name is Jim Cook and I have known him for more than ten years now. He always won first place in every English contest back when we were still in college, and even after he graduated. Also, he has been working as an interpreter for more than five years. Apart from his expertise in the English language, he also exhibits strong interpersonal skills. Overall, he is an easygoing person with the capablity of ensuring both comfort and professionalism in conversing with people. If you are interested in hiring him, I will contact him in person. You can also arrange an interview to ensure that he is capable.

Yours faithfully, 
Andy Lau

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