Tao is rare, in that he comes from a world that tries to maintain an Asian Earth culture despite centuries of time spent away.
The world he was born in would be unrecognizable to Earth-born Chinese (if they still existed) but he has grown up proud of the efforts his family have made to maintain a sense of history. This pride is reflected in his attitude and work.
He can come across as too proud, as superior – but that is not how he thinks. He is just very secure in who he is and where he is from. Secure enough not to care if others misinterpret him.
He fell into work as a Utility Officer because of a passion for field generators – generating areas of effect around the ship to create effects on other ships. This lead to research, expertise and eventually employment. He now has an amazing array of technology in his grasp and wants to understand all of it.