Meta Platforms Chief Operating Officer Sheryl Sandberg has announced via Facebook her intention to leave the company.

The COO has been working with Facebook, now known as Meta, for 14 years, and has been instrumental in the company’s progress through various groundbreaking projects.

“When I took this job in 2008, I hoped I would be in this role for five years. Fourteen years later, it is time for me to write the next chapter of my life,” she wrote.

Asked about her next move, Sandberg said she is focusing on philanthropy at a “critical moment for women.”

Zuckerberg said in a widely circulated post that Meta Chief Growth Officer Javier Olivan will take over as chief operating officer, but made clear that he does not plan to replace Sandberg’s role directly within the company’s existing structure.

“I think Meta has reached the point where it makes sense for our product and business groups to be more closely integrated, rather than having all the business and operations functions organized separately from our products,” Zuckerberg said.