S. Rama­dorai, or Ram, as he is popularly known, joined TCS as a trainee engineer. And when he relinquished charge as the managing director 37 years later, TCS was one of the world’s largest software and services companies. When Ramadorai took over the CEO mantle from F.C. Kohli in ’96, company revenues were at Rs 600 crore. And 13 years later, he left a Rs 36,000-crore global IT giant.