Serif is one of the best interpreters I have ever worked with in during my many international missions. When we were working together he was professional in everything he did. He prepared thoroughly for all of the tasks we shared. He showed a keen interest in fully understanding the topics under discussion. He was a major asset in ensuring that my communication with a wide range of audiences on different topics was effective. I have no hesitation in recommending him as an excellent, flexible and completely professional interpreter.