He joins from the Nielsen Company where he was the leader of business consulting services and a member of the South Asia executive committee.
Sen's key responsibilities will be to grow APCO's food and consumer products practice in India.
APCO India MD, Sukanti Ghosh said: 'We are delighted to have someone of Asitava's calibre joining APCO as our India practice grows in parallel with the Indian economy and the consequent interest in consumer products.'
Sen will be based in APCO's New Delhi office.