EntityQ15737800· pop 33· linked from 48 articlesJan KoumSign in to saveUkrainian-born American entrepreneur, co-founder of WhatsAppConnectionsX (social network)ConceptUkrainian Soviet Socialist RepublicEntityUkraineCountrySoviet UnionConceptKyivEntityFacebookConceptUkrainianEntityApple Inc.ConceptJewish peopleEntityRusso-Ukrainian war (2022–present)EventDemocratic Party (United States)ConceptWhatsAppConceptiPhoneEntityYahooEntityStanford UniversityEntityfamily nameEntityAntibesEntityForbesEntityInternational Standard Serial NumberEntitySMSEntityCategories1976 births21st-century Ukrainian engineersAmerican billionairesAmerican businesspeople in the computer industryAmerican chief executivesAmerican chief executives in technologyAmerican computer programmersAmerican people of Ukrainian-Jewish descentAmerican software engineersAmerican technology company foundersBusinesspeople from the San Francisco Bay Area