Jan Koum, el visionario 'hacker' tras la revolución de WhatsApp

Jan Koum, a Ukrainian immigrant who faced hardship early in life, is the visionary behind WhatsApp's revolution in instant messaging. Growing up in Ukraine without his parents, Koum relied on public assistance during his early years in the United States. After emigrating to the U.S. in 1992, his family faced financial struggles, with his father not joining them before his death in 1997 and his mother succumbing to cancer in 2000.

Koum found solace in computer science, forming part of the hacker group w00w00 and later working in security and infrastructure at Ernst & Young and Yahoo! respectively. He left Yahoo! in 2007, frustrated by the need to work on their advertising business, stating that working on ads was "depressing."

Koum's partnership with Brian Acton, forged during a year-long sabbatical in South America, led to the creation of WhatsApp in 2009. The app quickly gained traction after Apple introduced push notifications in 2009, enabling users to receive messages even when they weren't actively using the app. WhatsApp's growth was further propelled by its lack of competitors on the market at the time, with services like BBM, G-Talk, and Skype requiring users to register with their email addresses rather than phone numbers.

In 2014, WhatsApp was acquired by Facebook for $22 billion, making Koum an instant multimillionaire. Despite his success, Koum maintained his commitment to privacy, which he attributed to the "DNA" of WhatsApp. He chose to sign the sale documents at an abandoned Santa Clara County social services office, a location he frequented for food stamps as a child.

After the sale, Koum entered a period known as "resting and vesting" in Silicon Valley, where he continued to work at Facebook offices for a year without actively participating in the company.