John Jeong
FounderCo-founder, Co-CEO at Char
San Francisco, California, United States
FoundedChar Β· YC
Find your path to John
598 people in our graph share verified history with John β schools, employers, funds. One of them is your warm intro.
Garry TanunlockedJohn: together at Y Combinator (2025)
Γ11John: together at Y Combinator
About
John Jeong is co-founder and co-CEO of Char.
Co-founder, Co-CEO at CharYC S25
Intro paths
YC
John went through Y Combinator (Summer 2025) β any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Brad Flora, Backing expeditions into the future β the partner who ran Char's batch and knows the company first-hand. YC profile β
β
In turn, John can intro founders to Char's investors below.
Char's investors Β· 2
Co-founders at Char
DL
Deokhaeng LeeFounder
YL
Yujong LeeFounder
Experience
- CharCo-Founder, Co-CEOcurrent2024 β presentSan Francisco Bay Area
- Pado LabsCo-founder & CEO2023 β 2024San Francisco Bay Area
- Various StartupsProduct & GTM2021 β 2023
- Republic of Korea ArmySergeant, Mine Specialist & Squad Leader2017 β 2019Pocheon, Gyeonggi, South Korea
Frequently asked questions
- Who is John Jeong?
- John Jeong is co-founder and co-CEO of Char.
- Where does John Jeong work?
- John Jeong is Co-founder, Co-CEO of Char.
- What companies did John Jeong found?
- John Jeong founded Char.
- Where did John Jeong go to school?
- John Jeong studied at Y Combinator (S25); Seoul National University (Bachelor of Science - BS, Nuclear Engineering); Sejong Science High School.
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Garry TanPresident & CEOFounded Y Combinator +1Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianPartnerFounded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded Paradigm +1
+ 10,223 more
Seoul National University mafia43
Also came through, then founded or led a company.
Lloyd LeeBachelor of Arts (B.A.)Founded Hyperithm +1Nicolas SchweitzerFounded Inclusio +1Younghyun ChungBachelor of ScienceFounded Corca +1Sung ChoB.SFounded Chartmetric +1Sangrok OhBachelor's DegreeFounded HyperithmJohn S. KimComputer ScienceFounded Sendbird
+ 36 more
Same school
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyArhaan A.Deeptech Fellow at Clear VenturesCollin WallaceGeneral Partner at Lobby CapitalVictor SantosVictor Scout at One Way Ventures
+ 1,994 more
Also attended Seoul National University133
Jinho JangDirector, Quantitative Research at Deerfield Management CompanyJaejoon SongCEO at Crit VenturesDongwoo LeeDirector / Investment Team at Crit VenturesSungjoong KimSenior Associate / Investment Team at Crit VenturesByung Geon Rhee, PhDHead of Advisory Board at Adelphi Ventures Management, LlcJohn YangInvestor at Riverwood Capital
+ 127 more
Shared employers
Also worked at Char2
Also worked at Various Startups168
Laura BuhlerPartner, Head of Community at Felicis VenturesMichelle GonzalezCorporate Vice President and Global Head of M12Shakhina PulatovaInvestor at Storm VenturesAileen AllenPartner at Mercury FundEran SavirFounder & Managing Partner at Savyon VenturesBrian BenedictCo-Founder & CRO at Asymmetric Capital Partners
+ 162 more
