There are several professors in IIEST, Shibpur who are good. One of my friends studies in the CST department of IIEST. I can name some of the best professors in the department.

• Professor Manas Hira, Professor Amit Kumar Das, Professor Biplab Kumar Sikdar, Professor Abhik Mukherjee, Professor Arindam Biswas are some of the best professors you will meet in IIEST.
• Apart from them, Mathematics Department Professor Murari Mitra is good. He has a good grip on the Probability subject. 
• In the Electrical Department, Professor Sri Kumar Mallik, Professor and Mainak Sengupta are good. 
• In the Electronics Department, Professor Tamaghna Acharya has good teaching skills.

Therefore, the IIEST has many good professors other than these. They are all professional and skilled in their respective subjects and you will learn a lot from them.