According to Bloomberg, Circle has increased its headcount by more than 15% this year after revealing in January that it had secretly filed for a U.S. IPO. A Circle spokesperson said the company has added 137 employees and added more than 140 new positions in areas such as business development, engineering and marketing. The company currently has 882 employees, and another 24 have accepted job offers.

New hires include chief accounting officer Tamara Schulz and the exchange’s director of business development Pierre Carras, both of whom joined in May, according to LinkedIn accounts. Sterling Barnett is the director of business development for North American and European exchange partnerships and started in April, according to LinkedIn information.