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Achievement: QuickdrawAchievement: YOLOAchievement: Pull Sharkx2

Achievements

Achievement: QuickdrawAchievement: YOLOAchievement: Pull Sharkx2

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riicoseo/README.md

Hi ๐Ÿ‘‹, I'm Yoonseo Lee (์ด์œค์„œ)

Backend Developer who solves problems with measurable impact

91% faster response time | 90% faster incident detection | Open Source Contributor

๐Ÿ’ผ About Me

Backend Developer (3Y 7M) โ†’ AI/MLOps Engineer

๋ฌธ์ œ๋ฅผ ๋ฐœ๊ฒฌํ•˜๋ฉด ๊ทธ๋ƒฅ ์ง€๋‚˜์น˜์ง€ ์•Š๋Š” ๊ฐœ๋ฐœ์ž์ž…๋‹ˆ๋‹ค.

  • ๋ชจ๋‹ˆํ„ฐ๋ง ์‹œ์Šคํ…œ์ด ์—†์œผ๋ฉด? โ†’ ์ง์ ‘ ๋งŒ๋“ค์–ด์„œ ์˜คํ”ˆ์†Œ์Šค ๊ธฐ์—ฌ (Scouter Contributor)
  • ์„ฑ๋Šฅ์ด ๋Š๋ฆฌ๋ฉด? โ†’ 3๋‹จ๊ณ„ ์ตœ์ ํ™”๋กœ ์‘๋‹ต์‹œ๊ฐ„ 91% ๊ฐœ์„  (1,400ms โ†’ 120ms)
  • ๋ฐ˜๋ณต ์ž‘์—…์ด ๋ถˆํŽธํ•˜๋ฉด? โ†’ Python 2์ฃผ ๋…ํ•™ ํ›„ ์‚ฌ๋‚ด 150๋ช…์ด ์“ฐ๋Š” ์ž๋™ํ™” ํˆด ๊ฐœ๋ฐœ

ํ˜„์žฌ๋Š” ๋ฐฑ์—”๋“œ ์ตœ์ ํ™” ๊ฒฝํ—˜์„ AI/ML ์„œ๋น„์Šค๋กœ ํ™•์žฅํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค.

๐Ÿ† Key Achievements

Performance Optimization

  • ๐Ÿ“ˆ 80,000 concurrent users game service response time improved by 91% (1,400ms โ†’ 120ms)
  • ๐Ÿ’ฐ Monthly cloud cost reduced by 30% through Redis optimization & infrastructure scale-down

Monitoring & DevOps

  • โšก Incident detection time reduced by 90% (30min โ†’ 3min) with custom Scouter APM plugin
  • ๐Ÿค Open Source Contributor: Merged MS Teams alert plugin to Scouter official repository
  • ๐Ÿ“Š Log analysis time reduced by 83% (30min โ†’ 5min) with Azure Log Analytics + KQL

Automation & Productivity

  • ๐Ÿ”ง Developed internal CDN automation tool (Python) โ†’ 83% work time reduction (3min โ†’ 30sec)
  • ๐Ÿš€ Built end-to-end ML pipeline with Airflow (crawling โ†’ preprocessing โ†’ training โ†’ serving)

๐Ÿ›  Tech Stack

Backend & API

Java Spring Boot Python FastAPI

Database & Cache

Redis MySQL MariaDB

MLOps & Data

MLflow Apache Airflow scikit-learn PyTorch Pandas NumPy

DevOps & Monitoring

Docker Scouter Jenkins GitHub Actions Azure AWS Linux

๐Ÿ“Œ Featured Projects

๐ŸŽฎ Lost Ark Game Platform (80K Concurrent Users)

Performance optimization through 3-stage caching strategy

  • Redis caching + HTML static cache โ†’ 91% response time improvement
  • Apache JMeter load testing for 80,000 concurrent users
  • Monthly cloud cost reduction: 30%

๐Ÿ”” Scouter APM MS Teams Plugin

Real-time monitoring system for 25 servers

  • Developed custom Teams webhook alert plugin
  • Merged to official Scouter repository (Open Source Contributor)
  • Incident detection time: 30min โ†’ 3min (90% reduction)

๐Ÿค– CDN Environment Automation Tool

Eliminating repetitive manual work

  • Python tkinter GUI tool (learned Python in 2 weeks)
  • 83% work time reduction (3min โ†’ 30sec)
  • Used by 150+ employees company-wide

๐ŸŽฌ Movie Recommendation System with MLOps Pipeline

End-to-end ML automation

  • FastAPI model serving + MLflow experiment tracking
  • Airflow DAG: crawling โ†’ preprocessing โ†’ training โ†’ deployment
  • Web UI for non-technical team members to run experiments

๐Ÿ“ซ Let's Connect

"Problems I find don't stay problems for long."

Pinned Loading

  1. scouter-contrib/scouter-plugin-server-alert-teams scouter-contrib/scouter-plugin-server-alert-teams Public

    Java 2 2

  2. cdn_change_public cdn_change_public Public

    cdn_change repository with masking information for public

    Python

  3. mlops-project-mlops-2 mlops-project-mlops-2 Public

    Forked from AIBootcamp14/mlops-project-mlops-2

    aibootcamp14-mlops-project--UpstageAILab-Project-Temlpate created by GitHub Classroom

    Python

  4. upstageailab-ml-competition-ml-2 upstageailab-ml-competition-ml-2 Public

    Forked from AIBootcamp14/upstageailab-ml-competition-ml-2

    aibootcamp14-upstageailab-ml-competition-Upstage-AI-Lab-1-Classroom-Repository-Template created by GitHub Classroom

    Jupyter Notebook

  5. NLP_Dialogue_Summarization NLP_Dialogue_Summarization Public

    Forked from AIBootcamp14/naturallanguageprocessingcompetition-nlp-2

    aibootcamp14-naturallanguageprocessingcompetition-Upstage-AI-Lab-5-Classroom-Repository-Project-Temp created by GitHub Classroom

    Jupyter Notebook

  6. computer_vision_competition-cv4 computer_vision_competition-cv4 Public

    Forked from AIBootcamp14/computervisioncompetition-cv4

    aibootcamp14-computervisioncompetition-Upstage-AI-Lab-1-Classroom-Repository-CV-Template created by GitHub Classroom

    Jupyter Notebook