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Jan Koum

Ukrainian-born american entrepreneur, co-founder of whatsapp.

Born February 24th, 1976 (age 50 years) in Kyiv.

Occupations
computer scientist, engineer, programmer
Wikipedia
Jan_Koum
Twitter
@jankoum
Instagram
@jkoum
Facebook
@jan.koum

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Cherish all your happy moments; they make a fine cushion for old age. Booth Tarkington