Greetings,

This answer is based on previous rolling assistant professor hiring trends from IIT Delhi itself, what they typically require is:

- Ph.D.  and First class equivalent grade in the previous course/degree pursued with a good academic record throughout

- minimum of 3 years teaching experience (if you are a Ph.D. candidate then research paper publication would be an advantage)

- if your Ph.D. is done but have less than 3 years of experience in teaching then they'd even consider you for assistant professor grade 2 (higher pay scale)

these are the minimum requirements to apply there, rest is up to the selection board and the candidate's qualifications. Bear in mind it is all highly competitive.

I am attaching a PDF ad from IIT Delhi that mentions  a lot more details regarding professorship and the job.

https://home.iitd.ac.in/uploads/No.IITD_2020_AP-2.pdf

hope it helps,

Good day!

Hello
The minimum qualifications and experience for position of Assistant Professor in IIT Delhi are:

PhD and first class or equivalent grade at the preceding degree in an appropriate branch/discipline with a good academic record throughout.
A minimum three years teaching/research/ professional experience, excluding gained before and while pursuing PhD.
Candidate should have demonstrated research capabilities in terms of publication in reputed journal and conferences

To know more about recruitment rules use this official link
http://rti.iitd.ac.in/rti/Recruitment-Rules.pdf
Thank you

Dear Aspirant ,

As soon as you finish Masters, You can join as an Assistant Professor (ad-hoc)in almost all NITs and few IITs. (There would be an Interview only if you meet criteria like 55-60% in your Masters)

To make into Faculty you need to clear NET conducted by CBSE/UGC or any equivalent exam Or 2–3 years of Teaching experience. You will become a Assistant Professor now,

There are many  people with PhD but still they are Assistant Professor. So, PhD is not the only criteria to become a Professor or an Associate Professor.

Hope this information helps you

Thank you .