Just Eat CEO says running a public company is 'like being in high school again' after Twitter spat with Uber CEO

• Just Eat Takeaway CEO Jitse Groen compared running a tech company to "warfare."
• Groen and Uber CEO Dara Khosrowshahi previously sparred on Twitter.
• Just Eat Takeaway and Uber Eats are set to face off in the German food delivery market.

Jitse Groen, CEO of food delivery company Just Eat Takeaway, took to Twitter on Friday to address the difficulties of running a tech company.

"It just came to me that being listed is very similar to being in high school again, while running a successful tech company is more like warfare," Groen tweeted. "Not sure if at all helpful."

-Jitse Groen (@jitsegroen) April 30, 2021

The CEO has been facing new competition from Uber Eats since the company announced plans to expand its services into Germany on April 21. Groen's company is currently the market leader in the country, according to data from Bloomberg.

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On Wednesday, Groen targeted the Uber food delivery service, tweeting out a price comparison.

-Joe Black (@joeblackzw) April 28, 2021

Earlier in April, Groen got into a Twitter spat with Uber's CEO Dara Khosrowshahi after he announced Uber Eats plans to expand into Just Eat Takeaway's German market. The same day, Just Eat Takeaway's stock dropped 5.4%.

"Interesting way of trying to depress our share price @dkhos," Groen said. "Now, when did I see that before?"

Khosrowshahi was quick to respond: "Advice: pay a little less attention to your short term stock price and more attention to your Tech and Ops," he tweeted back.

Groen responded by criticizing Uber's business model, which pays workers per delivery, rather than an hourly wage. In Europe, Uber has adopted this business model by hiring an outside company to pay drivers regular wages.

"Start paying taxes, minimum wage and social security premiums before giving a founder advice on how he should run his business," he tweeted.

-Jitse Groen (@jitsegroen) April 21, 2021

Last summer, Just Eat Takeaway beat out Uber Eats for a merger with GrubHub that would give Groen's company a major slice of the US food delivery market. Uber and Just Eat Takeaway did not respond to a request for comment from Insider.