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Justin Ko

Software Engineer at 11x

Justin Ko is a software engineer currently at 11x, focusing on the development of Alice 2.0 since November 2024. Prior to this role, Justin co-founded and served as CTO of Opkit, a Y Combinator-backed startup that developed a HIPAA-compliant software platform for automating essential healthcare phone calls from June 2021 to November 2024. Justin's experience also includes working as a software engineer at Brex, where work involved rebuilding B2B financial products from April 2019 to June 2021, and co-founding Speak Genius from 2017 to 2019. Earlier career experiences include internships at SpaceX and Amazon in 2015 and 2016, respectively. Justin holds a Bachelor's degree from the University of Southern California (2013-2017) and participated in Y Combinator's S21 program in 2021.

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