Uber's newly appointed CEO Dara Khosrowshahi won't officially start his new job until Sept. 5, but he already has big plans for the company.

At an all-staff meeting on Wednesday, Khosrowshahi said he aims for an initial public offering in 18 to 36 months. Uber, which was last valued at $68 billion, would be one of the most anticipated IPOs in recent history.

Before an IPO, however, Khosrowshahi must fix the company culture. Uber has been plagued by scandals recently, including disputes over intellectual property, claims that executives ignored sexual harassment allegations, and a Department of Justice investigation into whether managers illegally bribed foreign officials.

"This company has to change," Khosrowshahi said, according to The Wall Street Journal. "What got us here is not what's going to get us to the next level."

Khosrowshahi, who had served as the CEO of Expedia since 2005, was hired to helm Uber after the startup's former CEO and co-founder Travis Kalanick resigned in June under investor pressure. Under Khosrowshahi's leadership, Expedia grew significantly, in part through acquisitions of other travel companies including Orbitz, Trivago, and HomeAway.