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John Sung Kim

John Sung Kim

Serial entrepreneur, SaaS founder, investor, and AI/ML talent leader

johnsungkim
Tampa, Florida, United States
Joined December 2025

Network

8.7K connections
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JetBridge Talent Acquisition
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Summary

John Sung Kim is a highly experienced serial entrepreneur, having successfully founded and led multiple software companies to significant milestones, including the IPO of Five9 (a cloud contact center solution) and the acquisition of DoctorBase (a mobile health platform). His journey began as a non-technical founder who overcame early challenges to build multi-million dollar companies, demonstrating strong business acumen and resilience. johnsungkim+3
Beyond his entrepreneurial ventures, John is an active angel investor, supporting early-stage startups in various sectors. His portfolio includes notable companies like Rappi, SpaceX, Lvl5 (acquired by DoorDash), and NorthBeam, reflecting his keen eye for promising technologies and market disruptions. johnsungkim+2
As the Founder and CEO of JetBridge, John is currently focused on revolutionizing software development outsourcing by connecting talented developers from regions like LATAM, Europe, and Ukraine with global employers. He advocates for best practices in outstaffing and has shared his expertise on Forbes and his personal blog. jetbridge+2
John maintains a commitment to education and mentorship, frequently speaking at universities (like Penn State, Stanford, and Kyiv Polytechnic) and industry events. He shares his insights on startup development, fundraising, and the art of storytelling for entrepreneurs. psu+3

Work

Education

Hobbies

After selling DoctorBase, he spent a year off, during which he traveled to Morocco, rode camels, and purchased multiple motorcycles. johnsungkim+1

He is an avid basketball fan, having had experiences with former NBA coaches and players. johnsungkim

Notes

JPJackson Palmersaid
JSJohn Sung Kim
has impressed them with how they attract and hire outstanding engineering talent in the biotech or healthtech space.

Jan 7, 2026

JPJackson Palmersaid they've seen
JSJohn Sung Kim
successfully lead engineering hiring efforts in manufacturing.

Jan 7, 2026