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Cumulus Networks Co-Founder and CTO Departs

Cumulus Networks, a nine-year-old networking company backed by Andreessen Horowitz and Sequoia Capital, is undergoing a leadership shakeup. JR Rivers, co-founder, chief technology officer and board member at Cumulus, is leaving the company, according to two people with knowledge of the matter. Cumulus confirmed his departure.  

Mr. Rivers, a networking industry veteran who worked at Cisco for 14 years in a variety of engineering roles, spent six years at CEO of Cumulus before stepping down in 2016 to become CTO. He took over that role from Nolan Leake, the other co-founder of Cumulus, who left the company. Mr. Rivers didn’t respond to requests for comment. 

Cumulus, which has raised $134 million, develops a version of Linux, the open-source operating system, designed to run on unbranded networking gear. Cumulus attracted large customers like Qualcomm, PayPal, and Verizon. Cumulus also struck a deal with Apple several years ago, as we have previously reported. 


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