“Democratize the Future”

John S. Kim (김동신, 金東信) is the Co-Founder and CEO of SendBird, the no.1 chat API for mobile apps and websites. (Y Combinator W16, Techstars S14). We power 100M monthly chat users on our platform, employ ~200 dedicated team members, and have raised over $120M+ USD to-date from ICONIQ Capital, Tiger Global Management, Shasta Ventures, August Capital, and Y Combinator.

This blog is intended to be an open-letter to my family and partners, and as a notepad for my thoughts. I hope it will show vulnerability, shortcomings, lessons from my mistakes, to nurture my own growth-mindset and openness to experience. I believe no one started perfect and no one ends perfect. Let us all be a forever learning being.

Previously, I was the Founder and CEO of Paprika Lab, a social gaming company, which was began in 2007, grew to 30 people, and got acquired by GREE, a Japanese public company in 2012.

My focus is on building and scaling a technology company. I’ve majored Computer Science and Engineering from Seoul National University. I happen to be Korea’s all-time no.1 Unreal Tournament pro-gamer.


  • The Big Five – slightly more in-depth results are here.
    • Extraversion: Very High
    • Neuroticism: Exceptionally Low
    • Conscientiousness: Very High
    • Agreeableness: Exceptionally Low
    • Openness to Experience: Moderately High
  • DISC: DC
  • Strengths Finder: Achiever, Competition, Activator, Futuristic, Focus

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