Radha Unni retired as the Chief General Manager, State Bank of India, Kerala Circle in December, 2008. During the tenure in the Bank, held assignments in all aspects of banking with specialization in Corporate Credit and Project Appraisal of Small and Medium Enterprises. Her other assignments include Risk Management at the Corporate Centre of SBI, Mumbai, Non-Performing Asset (NPA) management, Business Process Re-engineering Programme of SBI, Transformational Change Management, Capital market operations with the SBI Capital Markets Ltd. etc.
After retirement from the SBI, she was engaged by the Bank in Management Audit and recruitment of its officers. Her other professional engagements include Independent Director on the Board of Sundaram Home Finance Ltd., Royal Sundaram General Insurance Co.Ltd., Nitta Gelatin India Ltd., V-Guard Industries Ltd., Western India Plywoods Ltd., Axles India Ltd., Wil Car India Ltd. She has also served as Independent Director on the Board of CSB Bank Ltd and Muthoot Capital Services Ltd.