Dooho Lee

Dooho Lee

Co-Founder @ Nums AI

I build foundation models for structured data.

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About

I am Co-Founder at Nums AI and a second-year M.S. student in Electrical Engineering at KAIST, conducting research at the DataAI Lab under the supervision of Prof. Jaemin Yoo and Prof. Kijung Shin. My research focuses on machine learning for structured data, including graphs, time series, and tabular data, with a recent focus on foundation models.

Outside academia, I have co-founded and worked as a software engineer and designer in multiple startups, building products around foundation models, LLM-powered workflows, finance, and mobile applications.

Education

2019 - 2024

B.S. in Electrical Engineering and Computer Science, KAIST

Double major. Daejeon, Republic of Korea. Cum laude, GPA: 3.77.

Publications

ICML 2026

View Space: Learning Representation across Arbitrary Graphs

Dooho Lee, Myeong Kong, Minho Jeong, and Jaemin Yoo

Paper Code
ICML 2026

Generalizing Multi-Scale Time-Series Modeling with a Single Operator

Cheonwoo Lee, Dooho Lee, Doyun Choi, and Jaemin Yoo

Paper Code
UAI 2026

A Probabilistic Circuit Framework for Interpretable Graph PU Learning

Sagad Hamid, Dooho Lee, Myeong Kong, Tanya Braun, and Jaemin Yoo

ICML 2025

Aggregation Buffer: Revisiting DropEdge with a New Parameter Block

Dooho Lee, Myeong Kong, Sagad Hamid, Cheonwoo Lee, and Jaemin Yoo

Paper Code

Experience

Work Experience

Co-Founder and CTO Nums AISeoul, Republic of KoreaApr 2026 - Present Building foundation models for structured data.

Co-founded Nums AI to build tabular foundation models for structured data and leads technology strategy and engineering as CTO.

Founding Engineer & Designer Pensieve Inc.Berkeley, CANov 2022 - Aug 2023 Built LLM workflow tools used by 3 organizations.

Co-founded a US-based startup with two UC Berkeley students and worked across engineering and product design for LLM-powered workflow tools. Built Pensieve Extension for real-time note taking from Chrome highlights and Pensieve Notes for Zoom transcription and automatic meeting notes, which was used by 3 organizations.

Korean Augmentation to the United States Army (KATUSA) US ArmyUSAG Humphreys, Republic of KoreaNov 2021 - May 2023 Served as a KATUSA supporting communication across US and Korean personnel.

Served as a KATUSA at Bravo Company, 602nd Aviation Support Battalion, 2nd Combat Aviation Brigade, 2nd Infantry Division. Supported communication and coordination between US and Korean personnel while serving as the only KATUSA in the largest company of the unit.

Founding Engineer & Designer LayUsSeoul, Republic of KoreaMar 2022 - Jul 2022 Built a mobile ticket-to-coupon redemption product for exhibition visitors.

Built a mobile application for exhibition visitors to upload ticket information and redeem F&B coupons. Contributed to product implementation for a ticket-based redemption workflow connecting cultural events with local customer benefits.

Co-Founder, Software Engineer & Designer WARDSep 2020 - Oct 2021 Launched an ML-based stock information beta with 200+ users.

Co-founded and built a machine learning-based stock information service. The team was selected as one of the top 12 teams in 2021 E*5 KAIST under Blue Point Partners mentorship, launched a private beta with 200+ users, and gathered feedback through fund manager sessions, interviews, and surveys.

Industrial Project

Graph-Based Tracking of News Propagation on Social Media Using LLMs National Cyber Security Research InstituteRepublic of Korea2025 Developed graph-based analysis for tracking social-media news propagation with LLMs.

Worked on an industrial research project for graph-based tracking of news propagation on social media using LLMs.

Teaching Experience

Teaching Assistant, Programming Structures for Electrical Engineering EE209, KAISTSpring/Fall 2025 Developed auto-graded programming assignments for 200+ EE majors each semester.

Developed a data structures programming assignment with auto-grading for 200+ Electrical Engineering majors each semester.

Teaching Assistant, Foundation of Big Data Analytics EE412, KAISTFall 2025 Supported course operation and instruction for big data analytics.

Supported course operations and instruction for Foundation of Big Data Analytics.

Invited Talk

Professional Service

Awards & Honors

  • 2026 Recipient, Outstanding Master’s Student Scholarship (₩2.5M per semester), Korea Student Aid Foundation (KOSAF)
  • Jun 2024 2024 Team KAIST Global Challenge Program, $15,000 funding
  • Oct 2023 2nd place, 2023 Korea SW Startup Ideathon, ₩1.5M prize
  • Apr 2023 1st place, 8th Army ROKA Support Group Insignia Competition
  • Apr 2023 1st place, Creative Space G A.I & IoT Hackathon, ₩1M prize
  • Nov 2022 2nd place, Art Service Follow-up Growth Support Project, ₩20M prize
  • Aug 2021 1st place, Pre-Startup Package, Daejeon CCEI
  • Aug 2021 Bronze Medal, NH Investment Securities Big Data Competition

Skills

Languages: Korean, English

Machine Learning

PyTorch, PyTorch Geometric, DGL, Weights & Biases

Programming

Python, C, C++, Java, JavaScript, TypeScript

Front-End & UI

HTML, CSS, React, React Native, Flutter

Back-End & Data

MySQL, Neo4j, Chroma, Firebase, Google Cloud Platform

Design & Tools

Figma, Adobe XD, Adobe Illustrator, Git, Chrome Extensions, Zoom Apps