Like: Facebook founder Mark Zuckerberg reveals his one rule when hiring

Facebook boss Mark Zuckerberg has revealed the one rule he uses when hiring staff. Asked what he looks for in a prospective employee, the social network’s founder said: “I will only hire someone to work directly for me if I would work for that person. It’s a pretty good test and I think this rule has served me well.” Facebook is one of the toughest technology companies to get hired by because it has a relatively small staff compared with other Silicon Valley firms.

"Facebook is not a company for everyone in the world.

Facebook boss Mark Zuckerberg

Zuckerberg said: “The most important thing is to keep your team as small as possible. Facebook serves more than a billion people around the world but our team has fewer than 10,000 people. It’s only possible because of modern technology. Big companies get bloated.” Among those hand-picked to work at the company by Zuckerberg is Sheryl Sandberg, the chief operating officer. He told the audience he considered her a mentor who had helped him create a “healthy organisation”.