Dr. Rangaraj basically hails from Vanadurg, Shahapur Taluk in Yadagiri District. He obtained his PhD Degree on “Surapura Samsthana” from Karnatak University, Dharwad. He worked as Lecturer, Reader and Professor of Kannada at P G Centre at Belagavi, Kuvempu University and Karnataka University, Dharwad. He worked as Registrar (Evaluation) at Vijayanagar Sri Krishnadevaraya University, Bellary.
Dr.Rangaraj has published 32 books received the state award for his novel Kaadooru. He has got Sankramana award, H Narasimhaiah award, Kuvempu Sadhana Puraskar for his achievement in the field of education and literature. He has published 60 articles besides contributing columns to various magazines. He has presented over 150 papers at the state level and national level seminars, delivered more than 75 special talks, organized about 75 workshops, convened about 16 State level seminars under the sponsorship of Universities &Karnataka Government..
He has successfully supervised 15 Doctoral Research works and 8 M.Phil. He has worked as Principal Investigator and co-investigator for three research projects. He worked with his fellow colleagues as Associate Investigator for Kannada Language Development project for which the Government of Karnataka has provided financial support. He has also worked in the project pertaining to preparation of Dictionary of Kannada Vachana funded by UGC.
Dr.Rangaraj has worked as a member of Karnataka Sahitya Academy Bangalore.He has worked as member and chairman of BOS and BOE at various Universities and also as a member of textbook preparation committee. Dr.Rangaraj also worked as a Convener of Sahyadri Utsav. Co-ordinator of Backward Classes Cell, Co-ordinator of Extra Curricular Activities, Co-ordinatorof NSS at Kuvempu University, Shivamogga.