I'm currently working under a professor, in the chemistry department. He's the head of the department, is very good at managing people and mediating informations and knows how to get things done.
He usually gets his way with everyone, talks a lot about random stuff (to the point of being annoying to others) and sometimes he's bordering the molest, lol. When he thinks that someone is wronging him or challenging him, he gets relentless and cunning. For example, once he was fined a 1k bill because the car he rented had a broken glass. He explained that the glass was broken before he took the car but they didn't believe him. He started reading everything about the related laws, finding holes in the law and in the end he actually sued them and won the cause lol. They paid everything back plus some other money.
This other time a small company didn't want to continue the collaboration with the university, cutting funds. He took this as a challenge and focused all his personal resources on producing something that would have appealed them to invest again in the uni. He managed to make a patent for something and when the company showed interest again, he played hard to get. He made them pray to start again the collaboration and they had to increase the fundings.
Whenever he wants something, he gets it. He's very persuasive and good at "bartering": I give you this, you give me this. He also like his job. He personally requested the position of director. He told me that he actually likes managing people, it's funny to him. Despite his age (65), he sometimes acts childish and playful, even when the stakes are high.
Oh, and he's also good with money. He knows well how to manage them and save up money. Some people regard him as a "pig" because he was able to save up 2 times the money the previous director saved. In all of this, he's very kind and available with me (oh well, I directly work under him) but I can see how cunning he is when he wants something. Many in our department despise him, many consider him a jerk, but I only see a winner here. I can only admire him and when I asked to be taught, he was more than willing to share some secret in managin people.
Taking into account his strategic planning and people skills, I came to the conclusion he was an ENTJ but I don't know, could he be an INTJ or an ESTJ?