3x founder
Justin Ko
Building Sazabi
2026Founder· Sazabi
Founder · since 2017Company
Sazabi
Role
Founding Engineer
current
Stage
—
no public source
Raised
—
no public source
Based
—
Founder / co-founder — the company's markEmployee / research role
Source: LinkedIn work historyProfile coverage5 of 7 · missing posts, contact
Experience
Career
2026Sazabi
FounderFounding Engineer · 2026 – Present
202411x
Lead Engineer · 2024 – 2025
2021Opkit
Co-founderCo-founder/CTO · 2021 – 2024
2019Brex
Software Engineer · New York City Metropolitan Area · 2019 – 2021
2017Speak Genius
Co-founderCo-Founder · Los Angeles Metropolitan Area · 2017 – 2019
2015SpaceX
Intern · Los Angeles Metropolitan Area · 2015 – 2017
2016Amazon
Intern · 2016
Bio
Former early employee at Brex on Growth, Card, and Cash engineering teams. Before that, co-founder of SpeakGenius, an English learning tool. Studied entrepreneurship at the University of Southern California.