Banki has experience as a CFO in streaming services, an area where X may look to expand as its user base is expected to grow after President-elect Donald Trump's victory.

The former Tubi finance chief joins X amid financial challenges at the social media company.

Elon Musk's X Corp has tapped former Tubi executive Mahmoud Reza Banki as chief financial officer, in one of the social media platform's biggest hires as its billionaire owner shifts focus to a role aimed at making the government more efficient.

X has been trying to attract advertisers amid growing competition for ad dollars from social media firms including Facebook-parent Meta Platforms.