Chakraborti succeeds Parag Patki who stepped down as CEO effective July 14, 2014, the company said in a statement.
SMERA Ratings is a joint venture between Small Industries Development Bank of India (SIDBI), Dun & Bradstreet and leading public and private sector banks.
"I am delighted to assume this leadership role and I want to thank Parag for his guidance and support. His exemplary leadership has brought SMERA Ratings to the prominent place it occupies today.
"Backed by strong management team and committed stakeholders, I am optimistic that we will now take SMERA to greater heights," Chakraborti said in the statement.