His departure was reported by Recode.
On Sunday, Uber said in a statement: "We want to thank Jeff for his six months at the company and wish him all the best". And Raffi Krikorian, director of engineering at the company's Advanced Technology Center, tweeted last Wednesday that it was his last day at Uber.
Uber's VP of maps and business platform Brian McClendon. McClendon says he is leaving Uber amicably to "explore politics" in Kansas.
"This news certainly contributes to a narrative about Uber that will make hiring top engineering talent more hard", said Bryant Walker Smith, professor at the University of SC and one of the leading experts on the legal aspects of self-driving vehicles.
Jones was recruited to Uber from Target, and was brought on board to assist Kalanick in managing the company. More than 200,000 users deleted their Uber accounts following Kalanick's continued involvement on Trump's advisory council and Uber's seeming undermining of the immigration ban protests at JFK.
People accused Uber of trying to profit from Trump's immigration order and "breaking strike" by lifting surcharge pricing for airport protesters in NY.
Then, a former employee published allegations of sexual harassment and discrimination at the company, including accusations that the human resources department did not properly handle complaints from female employees. The blog post urged internal investigation upon the company's culture. Gary Marcus, who joined Uber three months ago after Uber acquired his company, left in early March.
Jones joined Uber from Target Corp, where he was chief marketing officer and is credited with modernising the retailer's brand.
"Jeff came to the tough decision that he doesn't see his future at Uber", Kalanick wrote.
It's one thing for drivers - who are at the bottom of the totem pole - to launch grievances against the company, but executive officials jumping ship speaks volumes about the tumultuous culture Uber has fostered from top to bottom. Among other departures, Ed Baker, Uber's vice president of product and growth, and Charlie Miller, a security researcher also left for new pastures.
Whoever joins Kalanick's side will be tasked with helping to fix the company's image after a number of other scandals in recent months, including employee allegations of sexual harassment, cut-throat management and a toxic work environment.