-- As long as they feel you are qualified, you should be OK. Forget the title, just prepare the best you can do.
-- Besides prepare the technical side, most important things are:
Show your nice work attitude;
Show you communication skills;
Show your nice appearance with 漂亮专业打拌.
Only answer question in the way they like to hear.
-- There are many BLOGs about how to prepare on-site interview and behavior interview questions, you can check from my website.
Wish you good luck!
Thanks!