P. N. Devarajan, a chemical engineer from I.I.T., Kharagpur comes with an experience of approx 40 years and has worked in senior management positions in Merck, Sharp & Dhome of India, Bombay Chemical & Plastics India Limited, Mettur, Shriram Chemicals & Fertilizers Ltd., Rajasthan. Devarajan was Chairman and Managing Director of Hindustan Organic Chemicals Ltd (June 1977-June 1981) and Indian Drugs and Pharmaceuticals Limited (June 1981 - June 1982)
He was President of the Project Development Organization - PDO, Bombay, a Shapoorji Pallonji Co., Bombay (June 1982 - Oct 1984).
Devarajan has held the position of
He is a founder of Centre for Social Initiative and Management (CSIM) and trustee of Manava Seva Dharma Samvardhani Trust, Chennai and Confederation of Indian Organizations for Service and Advocacy (CIOSA).
Presently, Devarajan is associated with Research Council of National Environmental Engg Research Institute, (NEERI) as a chairman and is a member of Planning Board of Madhya Pradesh, Assessment Committee Council of Scientific and Industrial Research (CSIR) and Research Council of the National Chemical Laboratory.