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๐Ÿบ
๐Ÿบ
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Achievements

Achievement: Pair Extraordinairex2Achievement: Starstruckx2Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLOAchievement: Arctic Code Vault Contributor

Achievements

Achievement: Pair Extraordinairex2Achievement: Starstruckx2Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLOAchievement: Arctic Code Vault Contributor

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@runmarket-cc

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GHGHGHKO/README.md

Hi there, I'm ๊ณ ํ˜•๊ทœ (Hyung-gyu Ko) ๐Ÿบ

Backend Engineer at GS Retail, building scalable logistics and CRM systems serving millions of customers.

GS Retail์—์„œ ์ˆ˜๋ฐฑ๋งŒ ๊ณ ๊ฐ์„ ๋Œ€์ƒ์œผ๋กœ ํ•œ ๋ฌผ๋ฅ˜ยทCRM ์‹œ์Šคํ…œ์„ ์„ค๊ณ„ํ•˜๊ณ  ์šด์˜ํ•˜๋Š” ๋ฐฑ์—”๋“œ ์—”์ง€๋‹ˆ์–ด์ž…๋‹ˆ๋‹ค.

๐Ÿ›  Tech Stack

Languages Java Kotlin Rust Python TypeScript

Backend Spring Boot Spring Batch Spring Security

Database & Cache PostgreSQL Oracle Redis

Infrastructure AWS Kubernetes Docker Airflow Datadog

๐Ÿš€ Open Source Projects / ์˜คํ”ˆ์†Œ์Šค ํ”„๋กœ์ ํŠธ

Project Description Stars Tech
dalgona ๐Ÿฆ€ Cross-platform GIF meme finder (Windows & macOS) โญ 117
Tauri, Next.js, Rust
klassic-quote-api ๐ŸŽฌ Korean classic movie quotes REST API โญ 21
Rust, Axum, Docker
klassic-quote ๐ŸŽฌ Korean movie quotes frontend โญ 9 TypeScript
upptime ๐ŸŸข Self-hosted uptime monitoring - GitHub Actions

๐Ÿ’ผ What I Do / ์ฃผ์š” ์—…๋ฌด

EN

  • Designed a delivery backend monorepo serving 6 systems and 18,000+ field devices, secured with JWE + AWS KMS
  • Migrated 5 logistics services from IDC to AWS, converting Oracle SQL to ANSI SQL with zero downtime
  • Modernized batch architecture from @Scheduled to Airflow + KubernetesPodOperator for isolated, observable execution
  • Built Datadog logging standards โ€” CUD audit trails, PII segregation via Logback Marker, distributed request tracing
  • Stabilizing a 20-million-user CRM platform โ€” recovering dead batches, fixing data sync bugs, building privacy-compliant APIs

KR

  • 6๊ฐœ ์‹œ์Šคํ…œยท์ „๊ตญ 18,000๋Œ€ ํ˜„์žฅ ๊ธฐ๊ธฐ๋ฅผ ์ง€์›ํ•˜๋Š” ํƒ๋ฐฐ ๋ฐฑ์—”๋“œ ๋ชจ๋…ธ๋ ˆํฌ ์„ค๊ณ„ (JWE + AWS KMS ๋ณด์•ˆ)
  • 5๊ฐœ ๋ฌผ๋ฅ˜ ์„œ๋น„์Šค IDC โ†’ AWS ์ด๊ด€, Oracle SQL โ†’ ANSI SQL ๋ฌด์ค‘๋‹จ ์ „ํ™˜
  • @Scheduled ๋ฐฐ์น˜๋ฅผ Airflow + KubernetesPodOperator ๊ตฌ์กฐ๋กœ ๊ฐœ์„  โ€” ์•ฑ ์žฌ๋ฐฐํฌ์™€ ๋ฐฐ์น˜ ์‹คํ–‰ ๋ถ„๋ฆฌ
  • Datadog ๋กœ๊ทธ ์ˆ˜์ง‘ ์ฒด๊ณ„ ๊ตฌ์ถ• โ€” CUD ๊ฐ์‚ฌ ๋กœ๊ทธ, Logback Marker ๊ธฐ๋ฐ˜ ๊ฐœ์ธ์ •๋ณด ๋ถ„๋ฆฌ, ๋ถ„์‚ฐ ํŠธ๋ ˆ์ด์‹ฑ
  • 2,000๋งŒ ํšŒ์› CRM ํ”Œ๋žซํผ ์•ˆ์ •ํ™” โ€” ์žฅ๊ธฐ ์ค‘๋‹จ ๋ฐฐ์น˜ ๋ณต๊ตฌ, ๊ฐœ์ธ์ •๋ณด ๋™๊ธฐํ™” ๋ฒ„๊ทธ ์ˆ˜์ •, ํ”„๋ผ์ด๋ฒ„์‹œ ์ค€์ˆ˜ API ๊ฐœ๋ฐœ

๐Ÿ“ซ Links

Portfolio
Instagram
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Pinned Loading

  1. dalgona dalgona Public

    Forked from agmmnn/tauri-ui

    ๐Ÿฆ€Tauri desktop app with shadcn/ui, Next.js, GIF meme finder app for Windows and macOS. (dalgona)

    TypeScript 114 1

  2. klassic-quote klassic-quote Public

    A REST API for Korean classic movies quotes

    TypeScript 9

  3. klassic-quote-api klassic-quote-api Public

    Korean movie quotes API

    Rust 21 2

  4. goose-auth-api-server goose-auth-api-server Public

    https://ghghghko.github.io/slate/#introduction

    Java

  5. pepega-blog-kotlin pepega-blog-kotlin Public

    https://pepega.tistory.com/category/Kotlin

    Kotlin 3

  6. upptime upptime Public

    Are you dead or alive?

    Markdown