hey,

what do you mean by iit jee faculty? 

so, if you mean by being a part of coaching institute to teach for IIT JEE, you have to be good in the subject you want to teach. you have to apply for the post in the coaching you want to be a teacher. further tasks will be done by caching institute itself.

good luck

Dear Saksham,

In order to become a faculty you can directly apply in the coaching institutes.

There will be entrance exam and interview to get selected.

Selection criteria varies as per the coaching institutes.

Good Luck!!