Startup The founder of this $40-million startup gives one crucial advice for building a successful company Updated : December 24, 2018 02:16 PM IST The Pittsburgh-based startup employs 150 people and has grown rapidly since its 2014 launch. It had more than $40 million in revenue this year and boasts 300 million users worldwide. Von Ahn spoke with The Associated Press after winning the prestigious Lemelson-MIT Prize for inventors who've made a positive social impact. The interview has been edited for length and clarity. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.