( see also: lomba burung )
His own father did not come to Mountain View with Koum , choosing to stay in Ukraine and work in the construction sector . Once they separate , Koum said he could not often call his father because of the cost of the phone is very expensive .
In Mountain View , he and his mother lived in a small apartment of government assistance that only equipped with two bedrooms . Daily needs are dependent on social security so he had to queue up food stamps .
Even to meet the needs of outside eating , they were both struggling looking for extra money . Koum worked as a janitor at a grocery store . While his mother became a baby sitter . Similarly, as quoted by Forbes .
Poor achievement in Campus
While still living in Ukraine , their lives even more difficult . Koum and his family settled in a small village outside the capital Kiev . Even more alarming , he was studying in a school that did not have a small room .
" The temperature outside is very cold , minus 20 degrees Celsius . Imagine , the kids had to run across the field to get to the restroom . Memiliiki computer when I was 19 years old , " he recalled .
Koum then go to college , studying computer science and mathematics at San Jose State University . But not to completion . " I am very bad achievement , and basically I did not like college , " said Koum .
Disconnect Lecture and So Hackers
Therefore he decided to drop out of college, and joined a group of hackers called w00w00 in network chat Efnet to finally be able to chat with Napster founder Sean Fanning . Then in 1997 , met with Brian Acton Koum from Yahoo .
Six months later , he began working on Yahoo as an infrastructure engineer . They also make friends , which helped a lot Acton Koum when live alone .
His mother died of cancer in 2000 , while the father died first in 1997 . " Acton is often invited me to his house , " said Koum .
Spent nine years working at Yahoo , including Yahoo Shopping , Koum feel uncomfortable with the number of ads that should be addressed .
Acton apparently felt the same , then they decided to come out of Yahoo in unison that on October 31, 2007 . Koum when the 31 -year -old and has been raising money to start his own business .
( see also: lomba burung love bird )
He was determined that this business will not be met by the many annoying ads . Then on February 24, 2009 , Koum WhatsApp Inc. founded the company in California , USA . In September 2009 , Acton decided to join in WhatsApp .