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Curriculum
vitæ.
01
Experience
●current
CEO
Parallax AI LLC · United States
- ↳Applied‑AI consultancy embedding with korean & global enterprises to ship LLM systems in production.
- ↳Writing the playbook teams use for evals, retrieval, and agent guardrails.
previous
CEO
NULL Enterprise PTE. LTD. · Singapore
- ↳Founded and operated a Singapore‑based technology company.
previous
Author
YoungJin.com / 한빛미디어 / Wikibooks / BJ Public / Udemy
- ↳Author of three published books on JavaScript, UX design, and lived experience.
- ↳Long‑form video courses on engineering & product on Inflearn and Udemy.
previous
Programming Instructor
Day One Company (FastCampus) · Inflearn
- ↳Taught web engineering to bootcamp cohorts in Seoul.
previous
Chief Blockchain Officer · CTO
ArtistSum · BLCNT · GoldLabs
- ↳Architected and shipped on‑chain settlement systems across korean retail and entertainment.
- ↳Owned end‑to‑end token issuance, wallet, and custody surface area.
previous
Technical Advisor
SnapX
- ↳Smart‑contract & technology audits for early‑stage teams.
previous
CEO
FlexWeb · AirDesk · Ruach · 109Salon
- ↳Multiple companies founded across web, design, and product — some still operating, some long retired.
previous
Country Manager · Commissioner
MCI Korea · PT. Flexweb Technology (Indonesia)
- ↳Cross‑border operations between Korea and Southeast Asia.
02
Selected writing & teaching
2024살아야 할 이유 · Reasons to Liveebook · marpple
2023Frontend Master Class · Inflearn course32 hrs · 2.1k enrolled
2022쉽게 설명한 자바스크립트 알고리즘kakao gift · gift.kakao.com
2022UX 디자인의 모든 것kyobobook · 2nd printing
2020 →YouTube · hoony_hanlong‑form · UCSQRF8yIhSMVRXhIqLxQnsw
03
Publications · in detail
쉽게 설명한 자바스크립트 알고리즘
JavaScript Algorithms Explained Simply
자바스크립트는 이제 웹 개발의 중심에 서 있는 필수 언어입니다. 이 책은 초보 개발자들이 쉽게 이해할 수 있도록 알고리즘의 기초부터 실용적인 예제까지 다룹니다.
view on kakao gift ↗UX 디자인의 모든 것
User Experience Considerations for UX Designers
제품이 구현해야 할 기능과 추구해야 할 목적은 다릅니다. 이 책은 애플리케이션을 만들고 구현할 때 본연의 목적을 되찾을 수 있도록 도와주는 가이드입니다.
view on kyobo bookstore ↗살아야 할 이유
Reasons to Live
이 글은 나침반이 아니다. 한 인간의 간절한 외침의 기록이다. 살고 싶다고 외치는 한 인간의 짧은 기억들을 엮어 만든 짧은 여정이다.
view on marpple ↗04
Media
m·01SBS 그것이 알고싶다 · 30주년 특집 — 로또 1등 당첨자들의 현재press / tv
m·02내일교육 'Dream Finding Live Interview'press / tv
m·03Issue Maker 'Hidden Champion'press / tv
m·04TV Chosun 추적 60분 시즌press / tv
m·05Startup Info 'Innovators in the COVID Era'press / tv
05
Clients & partners
Woowa Brothers · Samsung SDS · Volvo Korea · MBC · SBS · Hyperconnect · Nongshim · Mnet · SPAO · Kakao · Shinsegae · Kiwoom Securities · LH · Korea Gas Corp. · BespinGlobal · AhnLab Cloud · Tokamak Network · Uppsala Security · EY Han Young · Bain & Company · Deloitte · Samil PwC · Mom's Touch · MEXC · BitUnix — and many more across Korea, Singapore, Indonesia, Australia, and the Philippines.