Elon Musk (left), Esther Crawford (center), and Mark Zuckerberg (right).Steve Granitz/FilmMagic via Getty Images; Robert Cowherd; Cooper Neill/Zuffa LLC via Getty ImagesFormer Twitter director Esther Crawford says she has joined Mark Zuckerberg's Meta.Crawford was one of Elon Musk's top lieutenants at Twitter after he took over the company.She went viral for embracing Musk's hardcore work culture before getting laid off just months later.A former top lieutenant at Elon Musk's Twitter says she's working for Mark Zuckerberg at Meta now."Some personal news: I've joined the Messenger team at Meta as Director of Product," Esther Crawford wrote in an Instagram post on Monday.Crawford was Twitter's director of product management for over two years before she was laid off in February 2023."Although I considered a lot of great options, Meta was my top choice because I am obsessed with how humans connect through technology — and no other company has a bigger scale of impact in that space than Meta, which connects nearly 4B people (half of humanity)," Crawford said in her post.Besides lauding "the exceptional quality of the people" working at Meta, Crawford said she was attracted by Zuckerberg's "vision and intensity.""Seeing how he's made the company more efficient and less bureaucratic in the past year makes me even more bullish to be joining now because I want to move fast and ship awesome products," Crawford said of Zuckerberg.