Dhiraj Rajaram, 

He founded Mu Sigma in 2004, long before ‘big data’ became a catchphrase. “Math can define the problems and solutions in a business,” says Rajaram. He built a ‘university’ within Mu Sigma to create ‘decision scientists’—most of its 3,000 employees. Mu Sigma is an analytics firm for consumer goods, retail, financial services, pharma, and health care, with solutions for sales optimisation, customer value, and market segmentation.