Elon Musk's X is hiring again, CEO says. It had slashed more than half its workforce.

• X CEO Linda Yaccarino said the company is hiring again after a "necessary cost discipline exercise."
• Yaccarino said the company is near breaking even and is in a "growth" mode now.
• She said the the company went from about 8,000 staff to around 1,500 during Elon Musk's layoffs.

X CEO Linda Yaccarino said the social media company is hiring again after gutting over half of its workforce after Elon Musk took over.

"I get to come in and shift from this cost discipline to growth and what does growth mean? Growth means hiring," Yaccarino said during an interview with CNBC on Thursday.

The company does not have any open positions listed on LinkedIn or its careers website.

The former ad boss at NBCUniversal, who joined X earlier this year, said the company's operational run rate is near breaking even. She added that the company's relationship with advertisers — which had reportedly slipped since Musk took over Twitter — was on the mend and that some of the advertisers that had left were already returning to the platform.

"We're a company that has gone from 8,000 people and has gone through a very necessary cost-discipline exercise to about 1,500 people so it makes sense that there wouldn't be some type of impact of presence with these people," Yaccarino said of the impact of the layoffs on the company's relationship with advertisers.

The CEO also commented on her working relationship with Musk and added that the X owner gives her "autonomy."

"Our roles are very clear," Yaccarino said, adding that Musk works on the technology and product side while she focuses on "everything else."

Before Yaccarino joined the company in June, Musk had done significant bloodletting at the company formerly known as Twitter and called for employees to commit to working "hardcore" or leave the company.

More recently, Musk appeared to backtrack a bit on his cost-cutting efforts. In May, Musk told CNBC's David Faber that some "babies got thrown out with the bathwater" during the layoffs.

"There's no question that some of the people who were let go probably shouldn't have been let go because we simply did not have the time to figure it out. We had to make widespread cuts to get the run rate under control," Musk said, adding that the company might eventually even try to rehire some of the people they had let go.