This report discusses the success stories of two entrepreneurs from engineering background, Mike Cannon-Brookes and Sachin Bansal, who started their own businesses. It covers their characteristics, traits, and business approaches that helped them succeed. Mike Cannon-Brookes co-founded Atlassian, a software company that changed the world of software industry. Sachin Bansal started Flipkart, an e-commerce site that made the lifestyle of millions of people easy. Both faced many hardships but they undertook a wide range of activities so that they could sustain in the competitive world.