Self-made billionaire Mark Zuckerberg believes promoting talent from within a company can be "powerful" for a business' culture. "One of the things that I'm most focused on now is just making sure that people have opportunities to grow," the Facebook founder and CEO tells LinkedIn founder Reid Hoffman in an interview for his podcast, Masters of Scale.

To do this, Zuckerberg says his company mostly hires people who, even if they are already executives at their previous jobs, take on smaller roles at Facebook before hiring them for leading positions. "Everyone who's going to be a VP or product group lead here really needs to earn that," Zuckerberg tells Hoffman.

Zuckerberg adds how proud he is of the company's product groups — the teams that oversee ads, News Feed, Instagram and WhatsApp, for example — that have leaders who were promoted from other jobs at Facebook and now report directly to him. "And that, I think, ends up being really powerful for the culture," Zuckerberg says. These members of Facebook's management team grew into their roles from positions like executive assistant, engineer, HR and data analyst.