CA Anjan Sen had built up his career in Finance department of major Indian MNCs till his retirement spanning from 1980 to 2015 Starting in the manufacturing sector like Tata Motors, Rallies India, Philips India, he mainly worked in developing the financial systems and implementing the computerization during the 70s and 80s as and accountant. It covered Costing, Budgeting, Accounting, Financial Reporting, MIS and Consolidation architectures from the branch to corporate level. In 1991 he moved to Tata Consultancy Services, finance department. Besides heading the Finance of Eastern region from Kolkata, he was also directly involved in transforming the accounting structure from a single user based desktop bookkeeping of early 90s to the current level of 20’s web based ERP cutting across various verticals, segments and geographies. In 2010 he moved to Mumbai Corporate Finance of the company as the Global Coordinator for Internal Audit, to coordinate the function of overseeing legal and internal policy compliances as well as testing the internal control implication in all the geographies and departments of the organization. He played the pioneering role in implementing the Internal Financial Control as required by the Indian Financial Reporting. A companywide automated Compliance System was also developed based on self assessment and reporting. He ultimately started building up the foundation for developing the companywide Internal Control cutting across all departments in line with COSO and SOX. The company now as an IT giant has attained global standard so far as its internal control mechanism is concerned. After retirement in 2015, he formed his own CA firm, A. Sen & Co., Chartered Accountant, based out of Kolkata. Assignments mainly include building up proper accounting structure and maintaining the same in SME organizations. It is pertinent in light GST roll out in India.