Skip to content

—— Selected Outcomes

< 1 mo
Core E2E flow shipped
Quest-On · Initial validation · Individual ownership
~80%
Grading workload reduced
~10h → ~2h · Product outcome
3
Universities in pilot operation
Quest-On · Team adoption
~400
Students using the operations system / semester
3D printer operations · Product usage

—— Selected Work

—— Experience

Quest-On — Co-Founder & Lead Product Engineer
Seoul, Korea · Aug 2025 – Present
  • Translated university assessment workflows into product requirements and implemented the core E2E flow of an AI assessment SaaS within one month to begin initial validation. Then hardened the product to a level ready for live university exams within about three months.
  • Designed and implemented the full-stack system across exam authoring, submissions, role-based access, AI-assisted rubric evaluation, and result review using Next.js, PostgreSQL/Supabase, Clerk, and an OpenAI-powered evaluation layer.
  • Partnered with the business-development co-founder and instructors to convert field requirements into product features and operated the service in live university exam environments.
  • Reduced grading work from approximately 10 hours to about 2 hours through automated rubric-based evaluation and structured feedback.

—— How I Work

Scope the problem

Turn ambiguous operational pain points into a concrete product scope, user flow, and measurable outcome.

Build end-to-end

Design and implement the frontend, backend, data model, permissions, AI workflow, and deployment path.

Deploy and iterate

Operate software in real usage environments, collect feedback, and convert repeated needs into reusable product capabilities.

Use Cursor, Claude Code, and Codex to accelerate implementation and review while retaining explicit test, diff-review, and acceptance criteria.

—— Open Source & Additional Work

—— Lab / In Progress

—— Education

Gyeonggi University of Science and Technology
Department of Design Engineering
2023 – Present

Interdisciplinary coursework across product design, digital fabrication, embedded systems, and software prototyping.

—— Awards & Selections

Grand Prize — AI-based Gyeonggi Local Creator Startup Competition2026
AX Talent War — Top 10% AI Talent Selection2026
KTVF Startup Level Up Project — Top 12 Finalist2026
SNAAC (Seoul National University Accelerator) — Final Round2025
Startup Express (Korea University) — Final Round2025
KoreaIT Academy — Web Service Development Competition 1st Place2019

—— Technical Skills

Core Engineering

TypeScriptJavaScriptPythonSQL

Product & Frontend

Next.jsReactReact Native / ExpoTailwind CSSThree.js

Backend & Data

Node.jsFastAPIPostgreSQLSupabaseConvexPrisma

Applied AI

LLM orchestrationOpenAI APIVercel AI SDKRubric-based evaluation

AI Coding Tools

CursorClaude CodeCodex

Infrastructure

DockerVercelGit

Embedded / Edge

Raspberry PiC/C++ESP8266YOLO (working knowledge)ByteTrack (working knowledge)

Have an operational problem that needs to become a working product?

I’m interested in AI Product Engineering, Product Engineering, FDE, and AX opportunities.