Falzone’s company has developed a simple yet sticky technology: a point-of-sale system based on Apple’s iOS mobile platform. Under her direction, Revel has already sold 10,000 such systems to customers like Smoothie King and Tully’s Coffee. Over the last 12 months, the company doubled its employee count from 200 to 400; earlier this summer, Falzone closed on a $110 million investment round. She’s also inked partnerships with the likes of Intuit, a provider of software tools for small businesses, and recently signed a major enterprise sales deal with Apple. Next up? International expansion and, she says, an IPO in the next two to three years.