Technical Product Manager & Full-Stack Developer
AI agents, multi-model orchestration, automation-first web products, and fast product execution.
name: Joungmin Sung
school: Daegu Software Meister High School
role: Technical Product Manager & Full-Stack Developer
focus: AI Agents, Automation, Full-Stack Web Products
working_on: AI multi-model orchestration, RAG, and developer automation"가능할까요?"라고 묻기보다 "구현해봤습니다"라고 답하는 테크니컬 PM 정민성입니다.
I like turning product ideas into working systems: planning the user flow, building the frontend and backend, integrating AI models, and shipping the first usable version quickly.
| Project | What it shows | Stack / Area |
|---|---|---|
| OpenDocuments | Self-hosted RAG platform for document search across GitHub, Notion, Google Drive, local files, and web sources | TypeScript, RAG, MCP, embeddings |
| codex-discord-connector | Run and manage local Codex workflows from trusted Discord channels | TypeScript, Discord, automation, CLI |
| gptcc | Use OpenAI GPT models inside Claude Code through documented extension points | JavaScript, CLI, OpenAI, Claude Code |
| SemanticFS | FUSE-based semantic filesystem for accessing files by meaning instead of path | Rust, semantic search, SQLite |
| job-posting-memo | Chrome extension for memo, rating, and application tracking across job boards | JavaScript, browser extension |
| fun-learn | AI adaptive learning platform with flashcards, quizzes, study analytics, and feedback | Next.js, TypeScript, Supabase, OpenAI |
Multi-model AI chatting service designed around response quality, model routing, and orchestration.
- Role: Frontend Engineer, Backend Engineer, AI Service Planner
- Tech: Next.js 15, TypeScript, PostgreSQL, Redis, Docker, Nginx, OpenAI/Anthropic/Google API
- Key Feature: 11-step orchestration pipeline, intelligent model routing, response synthesis
- Status: Case study preparing
AI portfolio generation and project management platform for IT job seekers.
- Role: Product Manager, AI Service Planner, Frontend Engineer
- Duration: 2025.03 ~ 2025.11, industry-school project, 7 members
- Tech: React, Nest.js, Firestore, Azure SWA, GCP, GPT-5, OpenAI Prompt Optimizer
- Key Feature: Context-aware prompting, multi-prompt chain, user decision layer
Wearable device for heat-illness risk detection and automatic emergency reporting.
- Role: AI Engineer, AI Service Planner
- Duration: 2025.08.01 ~ 2025.08.03, 3 members
- Tech: Python, MODI+, OpenAI API, Isolation Forest, pandas, numpy
- Key Feature: Real-time risk detection using IMU, ENV, and ToF sensor data
- Award: SW·AI 고교 챌린지 대상
100+ free web utility tools for developers, designers, and general users.
- URL: snaputil.app
- Role: Fullstack Engineer, Service Planner
- Duration: 2025.12.04 ~ present
- Key: First revenue experience through Kakao AdFit
QR-based attendance management service for preventing proxy attendance.
- URL: qvick.xyz
- Role: Frontend Engineer, Product Manager
- Duration: 2025.03.04 ~ present
Learning habit platform for rural youth in Gangwon-do.
- Role: Frontend Engineer, AI Service Planner
- Duration: 2025.07.15 ~ 2025.07.16
- Award: 에듀테크 소프트랩 AI 해커톤 최우수상
| Date | Award | Organization |
|---|---|---|
| 2025.10 | 에듀테크 소프트랩 AI 해커톤 최우수상 | 한림대학교 총장상 |
| 2025.09 | ICT 창업가 캠프 본선 금상, 고등부 1등 | 대구광역시교육감상 |
| 2025.08 | SW미래채움 SW·AI 고교 챌린지 대상 | 과학기술정보통신부 장관상 |
| 2025.07 | 교내 해커톤 대상 | 대구소프트웨어마이스터고 교장상 |
| 2024.07 | 교내 해커톤 우수상 | 대구소프트웨어마이스터고 교장상 |
| 2024.05 | 교내 아이디어톤 2위 | 대구소프트웨어마이스터고 |
| Date | Certification | Organization |
|---|---|---|
| 2025.08 | AI 코딩활용능력 1급 | 럭스로보 |
| 2025.11 | TOPCIT 2수준, 370점 | 정보통신기획평가원 |
- 대구대학교 정보보호영재교육원 9기 중등 기초과정 수료, 2022.04 ~ 2022.10
- 대구대학교 정보보호영재교육원 12기 고등 전문과정 수료, 2025.04 ~ 2025.10
- Qvick 개발 동아리 c0nnect 2기 부장, 2024.03 ~ present
- 신규 개설 교육 창체 동아리 Louter 부장, 2025.03 ~ present
- 대구소프트웨어마이스터고 2025학년도 제10기 학생회, 2025.08 ~ present
- 해커그라운드 in 의성 해커톤 참가, 2024.08
- 유슬래시 U/THON 25 참가, 2025.07
- 제12회 SW 융합 해커톤 대회 참가, 2025.08
Contact: joungminsung080830@gmail.com