There, Mathrani worked under Bruce Ratner, a former owner of the Brooklyn Nets. Ratner became a mentor to Mathrani, and credited him with building the company's retail business at a dinner in Mathrani's honor in 2012. Mathrani then became executive VP of Forest City Ratner.
In 2010, he became CEO of General Growth Properties, one of the largest mall owners in the country.
In 2018, Mathrani led a sale of GGP to Brookfield Property Partners for a reported $15 billion. He became CEO of the company's retail group, and vice chairman of the company.
Now, Mathrani will first work on hiring more executives, and will.report to WeWork's executive chairman Marcelo Claure, who is also CEO of SoftBank Group.