N Kumar is the Vice Chairman of The Sanmar Group, a fourth-generation family-owned business conglomerate. The Group is a multinational US $ 1 billion conglomerate headquartered in Chennai, India and has manufacturing facilities in India, the US, Mexico, and Egypt. 

It is engaged in three key business sectors – Chemicals (including Speciality Chemicals), Engineering (Products and Steel Castings) and Shipping.

N Kumar is the Honorary Consul General of Greece in Chennai.

N Kumar is on the Board of various public companies and carries with him vast experience in the spheres of Technology, Management and Finance.

As a spokesman of Industry and Trade, N Kumar had been a President of CII and participated in other apex bodies. He presently chairs the CII Institute of Quality, Bangalore.

N Kumar has a wide range of public interests going beyond the confines of corporate management in areas of health, social welfare, education and sports. One special area where he is involved in the Madhuram Narayanan Centre for Exceptional Children.

An Electronics Engineering Graduate from Anna University, Chennai, Kumar, is an avid golfer and a patron of cricket and tennis. He has extensively travelled across the globe.