His father Mukul Prakash Banerjee was a senior Counsel of the Calcutta High Court having enrolled at the Bar in 1961.
In 8 December 2009 he was nominated by the Governor of West Bengal to the Governing Body of the Surendranath Law College and served till 2011.
[citation needed] Banerjee worked as the guest lecturer at the West Bengal National University of Juridical Sciences.
He joined the High Court of Calcutta as an advocate in 1995 and was selected for the post of Junior Standing Counsel of the Government of West Bengal in 2011.
He was also awarded the Advocate General's Trophy for the most outstanding Emerging Lawyer by the Indian Law Institute (West Bengal Unit) in 2009.