Last year, as Robinhood’s trading activity boomed and legal problems mounted, the $11.7 billion startup shook up the ranks of its senior staff. The turnover means many top employees will be relative newcomers at the time of its anticipated public listing this year.

The Menlo Park, Calif., company saw the departures of its head of international expansion and its general counsel, among others. It has also made some key hires. Robinhood recently promoted Surabhi Gupta, who joined from Airbnb in May, to run its entire engineering organization, as well as hired a former State Department official to run external affairs. These changes, which have not been previously reported, affect some of the nearly 60 top positions at Robinhood we identify in the accompanying org chart. That group includes the seven people who report directly to CEO Vlad Tenev, 33, according to current and former employees.