Why do you think you are qualified for this position ?   I have four years study in the Department of Mechanical Engineering and it has given me a solid theory foundation . Moreover , I have worked at CAB Company for 4 years and got a lot of practical experience .   Great . Then what's your technical post title now ?   I am a senior mechanical design engineer .   Do you take the original certificate with you ?   Yes . Here it is .   Can you briefly tell me about one of your designs ? 