Turing Pharmaceuticals CEO Martin Shkreli and Democratic presidential candidate Sen. Bernie Sanders have had a turbulent relationship since Shkreli raised the price of a lifesaving drug about 5,000 percent in September. But that didn't stop the former hedge fund manager from applying for an internship with Sanders in his senate office.

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As for the reasoning behind Shkreli's application, which he discussed on Twitter, he said "if you can't beat em..." on Monday. The Vermont Senator openly criticized Shkreli for his role in the price hike of Daraprim, a drug that treats an infectious disease and helps cancer and AIDS patients.

Sanders' account replied to the Tweet. The internship pays $12 per hour, according to the application website.

"I have uploaded my resume and cover letter," Shkreli responded. "Thank you for your consideration and I look forward to hearing back."

Days after the New York Times first reported on the price hike scandal, Sanders and Maryland Rep. Elijah Cummings (D) issued a statement, condemning Shkreli and requesting documents related to Turing's acquisition and pricing of Daraprim. The letter went unanswered, according to Business Insider.

"On behalf of the American people, we are sickened by these actions," Sanders wrote. "Mr. Shkreli is holding hostage the patients who rely on this lifesaving medication, as well as the hospitals that administer it, by charging unconscionable prices for a drug on which he has a monopoly—just because he can."

Weeks later, Shkreli donated the maximum individual contribution—$2,700—to Sanders' campaign in an apparent effort to arrange a private meeting with the candidate. That effort failed however, as Sanders donated the contribution to an HIV clinic based in Washington D.C.

RELATED: Bernie Sanders Just Delivered Another Embarrassing Blow to Martin Shkreli

Shkreli expressed frustration over the campaign's action and took to Twitter, posting a series of memes that were critical of Sanders' policy proposals. He said he was so angry at Sanders that he punched a wall and broke his wrist, but that claim came under question, as ATTN: previously reported.

ATTN: reached out to Shkreli for comment, but he could not be reached by the time of publication.