Houston-based restaurant technology company HungerRush has made multiple leadership appointments in recent months as changing trends in the restaurant industry have opened up opportunities for its point-of-sale product. Chief revenue officer Olivier Thierry, who joined the company last fall, said the company’s acquisitions in recent years were driven by New York-based private equity firm Corsair, which acquired a majority stake. at HungerRush in 2022. The investment also led to two waves of leadership changes. . “When…