Dr. Somayajulu is the Co-Founder, CEO and Executive Director of Sigma Research and Consulting. He ids the President of Indian Association for the Study of Population, IASP and aslo hold the position of Vice President at Indian Association for Social Sciences and Health, IASSH. He has done his mastetrs in Statistics, MA in Sociology, MBA, M Phil and Ph D in Population Studies. Internationally recognised as one of the experts in his field, He has more than 25 years of experience in Social and Development sector research. He has coordinated more than 400 research studies on health, education, gender, rural development, urban development, poverty, sexual health, reproductive health, child health, nutrition, CSR, governance, innovation, HIV/AIDS, water and sanitation, social marketing, climate change, energy, transport etc. Carried out studies for UNICEF, UNFPA, UNDP, UNAIDS, DFID, PSI, IPAS, Abt Associates, ICRW, Johns Hopkins University, Paris School of Economics, Boston University, FHI 360, He was a consultant with the European Union for Evaluation of the Research Proposals for Social Sciences and Humanities under Frame Work Programme 7 involving remote evaluation and consensus meetings at E.U. Head Quarter, Brussels. A regular attendee and paper presenter at prestigious international conferences across the world from Brazil, U.S., Switzerland, Beijing, Hong Kong, New Zealand, Singapore, France, Kenya, Cairo, Manchester, Morocco, Thailand, Islamabad, Dhaka to Mumbai and Delhi.
He is the author of 9 edited volumes, 110 papers published in Edited Books, and Journals, and presented at International and National Conferences/Seminars