Han Joo Chae
CTO & Head of Global Business · Oncosoft

Han Joo Chae

채한주

Medical AI only earns its place when it clears the regulators and reaches patients at global scale. I build the teams, products, and go-to-market that get it there.

LinkedIn Scholar Email
$1B+
Long-term contracts secured
FDA / CE
Regulatory clearances achieved
25%
Domestic market share (Oncosoft)
15+
Granted US patents
Professional portrait
Partnered with
Google CloudAWS
Spoke at
AAPM Int'l SymposiumGoogle Cloud Startup SummitAWS Public Sector SummitNaverSamsung SSDCKAIST
Featured in
Google Cloud CustomersChosun Biz

About

Medical AI leader with deep expertise bridging R&D with global commercialization across startups and enterprises. I build and scale AI organizations from zero, lead cross-functional teams across Korea and the US, and take products from rapid prototyping to regulated global launch (FDA/CE) — securing $1B+ in contracts and expanding across the US, Asia, the Middle East, and Latin America through partnerships with Google Cloud and AWS.

Medical AIHuman-AI InteractionHuman-Computer InteractionComputer VisionMachine LearningAugmented / Mixed RealityGlobal Go-to-MarketRegulatory (FDA/CE/MFDS)MLOps
Education
Seoul National University
Ph.D., Computer Science and Engineering
Human-Computer Interaction Lab
2015–2020
Carnegie Mellon University
M.S. & B.S., Electrical and Computer Engineering
B.S. with University Honors
2005–2010

Impact

Now · Current Role

Bringing AI to Radiation Oncology

Oncosoft · CTO & Head of Global Business · 2024–present

As CTO and Head of Global Business, I lead the technology and global expansion of Oncosoft — an end-to-end AI software ecosystem bringing precision and efficiency to radiation oncology.

Oncosoft — overview
25%
Domestic market share
#1
Japan clinical benchmark
300K+
Patient cases processed
~1 min
Organ auto-contouring
Regulatory clearances
Korea (MFDS)2022.02US (FDA)2025.02Japan2025.04Singapore2025.10Brazil2025.12
Problem

Radiation therapy planning depends on manual organ and tumor contouring on CT/MR — slow, variable between clinicians, and a bottleneck to treating more patients.

Approach

OncoStudio auto-contours organs-at-risk and tumors in about a minute through a zero-click workflow integrated with PACS, TPS, and EMR. It anchors a full platform — OncoFlow, OncoStudio, OncoPlan, and OncoRPT — spanning imaging, planning, delivery, and follow-up.

Impact

Captured 25% domestic market share and ranked #1 in clinical performance benchmarks by leading Japanese research institutions, with 300,000+ patient cases processed. I lead R&D and global expansion across the US, Latin America, Southeast Asia, and the Middle East.

OncoStudio — AI auto-contouring of organs and tumors on CT/MR
Meeting clinicians and partners at a global oncology conference
Meeting clinicians and partners at a global oncology conference
Receiving the International Symposium Award — 5th KSMP-JSMP-KAMPiNA Joint Symposium at AAPM, 2025
Receiving the International Symposium Award — 5th KSMP-JSMP-KAMPiNA Joint Symposium at AAPM, 2025
With the Oncosoft team on-site
With the Oncosoft team on-site
Oncosoft ↗
Flagship Career Impact · 2020–2023

AI Cloud Platform for 3D-Bioprinted Wound Regeneration

ROKIT Healthcare · CAIO & Vice President · 2020–2023

An AI platform that turns a single tablet photo of a wound into a ready-to-print 3D patch model in seconds — then bio-prints it at the point of care to treat diabetic foot ulcers, deployed across the US, Asia, the Middle East, and Latin America.

ROKIT Healthcare — overview
$1B+
Long-term contracts
FDA + CE
Regulatory clearance
0→15
AI team built
~30 sec
Photo → printable 3D model
Problem

Personalized regenerative patches require precise scanning, CAD modeling, and bioprinting — work that a surgical team anywhere in the world cannot realistically do at the point of care. To reach patients globally, the hard part had to disappear into software.

Approach

We built an AI platform (AiD Regen) that, from a single tablet RGB-D photo, segments the wound, reconstructs its 3D surface, and generates a ready-to-print 3D model in about 30 seconds. Production-grade MLOps on Google Cloud (Vertex AI, GKE) delivers identical quality at any clinical site — no on-site AI specialist required.

Impact

Founded and scaled the AI department from zero to 15, achieved both FDA and CE clearance, and drove the full commercial cycle from MVP to $1B+ in long-term contracts across the US, India, Turkey, the Middle East, and Latin America. Launched on AWS in 6 months, then migrated to Google Cloud in 3 — the work became a featured Google Cloud customer story.

Technology overview — CVPR 2022 (wound segmentation & 3D reconstruction)
Wound capture → AI segmentation & 3D reconstruction
Wound capture → AI segmentation & 3D reconstruction
Personalized 3D-bioprinted regeneration patch
Personalized 3D-bioprinted regeneration patch
Point-of-care application in the operating room
Point-of-care application in the operating room
Google CloudAWS
Google Cloud customer story ↗Interview — Chosun Biz ↗Paper — CVPR 2022 ↗

Ventures & Research

Kai Health — product
Medical AI

Vita Embryo — AI Embryo Assessment

Kai Health · 2023–2024

Led AI diagnostic R&D for embryo assessment (Vita Embryo) to MFDS (Korean FDA) clinical-trial approval, and rebuilt the product lifecycle to cut release cycles from ~2 months to 2–3 weeks.

DiagnosticsRegulatoryMLOps
Research roots

AR / HCI research at SNU & CMU

Seoul National University · Carnegie Mellon · 2007–2020

A decade of human-computer interaction and augmented-reality research — IoT-device interaction in AR, 3D interaction techniques, and mobile sensing — published at ACM and IEEE venues including UIST and CHI. The technical foundation behind the products above.

Experience

CTO & Head of Global Business

Nov 2024 — Present
Oncosoft · Seoul, Korea
  • Lead 20+ staff across R&D and global sales in Seoul and the US, driving AI-powered radiation therapy solutions that captured 25% domestic market share and ranked #1 in clinical performance benchmarks by leading Japanese research institutions.
  • Spearhead international expansion across the US, Latin America, Southeast Asia, and the Middle East, securing 10+ distribution partnerships and targeting 100% year-over-year revenue growth.

CTO

Nov 2023 — Oct 2024
Kai Health · Seoul, Korea
  • Led a 10+ member R&D team and established a structured product development lifecycle, reducing release cycles from ~2 months to 2–3 weeks through overlapping, parallelized workflows.
  • Elevated AI model accuracy and reliability by enforcing data integrity standards and advancing model architecture, culminating in MFDS (Korean FDA) clinical trial approval.

CAIO & Vice President

Oct 2020 — Aug 2023
ROKIT Healthcare · Seoul, Korea
  • Founded and scaled the AI department from zero to 15 members, leading the development of an AI-powered cloud platform for 3D bioprinted wound regeneration targeting diabetic foot ulcers (DFU).
  • Drove the full commercial cycle from MVP to $1B+ in long-term contracts across the US, India, Turkey, the Middle East, and Latin America, achieving both FDA and CE clearance for the solution.
  • Launched the AI cloud service on AWS in 6 months, then migrated to Google Cloud under a strategic partnership, establishing production-grade MLOps infrastructure in 3 months to support global commercial deployment.

PM, Doctoral Researcher

May 2016 — Apr 2020
HCI Lab @ Seoul National University · Seoul, Korea
  • Led and completed 4-year AR/MR research projects for Samsung Research, securing grants and publishing top-tier conference papers (UIST, CHI).

Software Developer

Oct 2014 — Dec 2015
Bluegg (startup) · Seoul, Korea
  • Developed Android and web applications for a social donation campaign platform.

UX Researcher

Aug 2010 — Dec 2013
Samsung Electronics · Suwon, Korea
  • Designed interfaces for mobile, tablet, TV, and smartwatch, developing prototypes for proof-of-concept across convergence scenarios.

Intern, HCI Development Team

Jun 2009 — Aug 2009
Samsung R&D Center Silicon Valley · San Jose, CA
  • Created a mobile 3D interface using sensors and image processing; resulting work was recognized with a Samsung Best Paper Award and a granted US patent.

Speaking & Teaching

Speaking on stage — conference photo
Invited talks
Teaching

Research & Patents

Full list on Google Scholar →

Granted patents (14)
  • US12035277B2Method and apparatus for providing notification2024
  • US11445475B2Method and apparatus for providing notification2022
  • US11443611B2Method of providing activity notification and device thereof2022
  • US11057866B2Method and apparatus for providing notification2021
  • US10924147B2Wearable device for transmitting a message comprising strings associated with a state of a user2021
  • US10852841B2Method of performing function of device and device for performing the method2020
  • US10748409B2Method of providing activity notification and device thereof2020
  • US10674193B2Content providing method and device2020
  • US10638452B2Method and apparatus for providing notification2020
  • US10638451B2Method and apparatus for providing notification2020
  • AU2016235039B2Method of performing function of device and device for performing the method2017
  • US9629120B2Method and apparatus for providing notification2017
  • US9338620B2Method and apparatus for executing alarm with respect to missed received call for mobile communication terminal2016
  • US8310537B2Detecting ego-motion on a mobile device displaying three-dimensional content2012

Awards & Honors

Press & Media

Contact

hanjoo.chae@gmail.com
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