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@daily-boj @SURFERTON @SSAFY13th-algorithm @Jungle-12-303 @nodease

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yoonki1207/README.md

Hey, I'm Yoonki Hong, Backend Developer ๐Ÿ‘‹

About me

์ž๊ธฐ์†Œ๊ฐœ

ํŠน์ • ๊ธฐ์ˆ ์— ์–ฝ๋งค์ด์ง€ ์•Š๋Š” ๊ฐœ๋ฐœ์ž๊ฐ€ ๋˜๊ธฐ ์œ„ํ•ด ๋ฐฑ์ค€์—์„œ 1,044๊ฐœ์˜ ๋ฌธ์ œ๋ฅผ ํ’€๋ฉฐ ์ž๋ฃŒ๊ตฌ์กฐ์™€ ์•Œ๊ณ ๋ฆฌ์ฆ˜์˜ ๊ธฐ๋ณธ๊ธฐ๋ฅผ ๋‹ค์กŒ์Šต๋‹ˆ๋‹ค. ์ฝ”๋“œ ๋ ˆ๋ฒจ์—์„œ ๋ฌธ์ œ์˜ ์›์ธ์„ ๋น ๋ฅด๊ฒŒ ์ขํžˆ๋Š” ๊ฐ•์ ์„ ๋ฐ”ํƒ•์œผ๋กœ, ํฌ๋ž˜ํ”„ํ†ค ์ •๊ธ€ 12๊ธฐ ๊ณผ์ •์—์„œ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ํ’€์ด์— ์–ด๋ ค์›€์„ ๊ฒช๋Š” ๋™๋ฃŒ๋“ค์„ ๋„์™€์ฃผ๋ฉฐ ์‹ ๋ขฐ๋ฅผ ์–ป์—ˆ์Šต๋‹ˆ๋‹ค. ์ดํ›„ ํŒ€ ํ”„๋กœ์ ํŠธ ๋ฆฌ๋” ์—ญํ• ์„ ์ˆ˜ํ–‰ํ•˜๋ฉฐ, ์ผ์˜ ์šฐ์„ ์ˆœ์œ„์™€ ์ผ์ •์„ ๊ด€๋ฆฌํ•˜๊ณ  ๊ฒฐ๊ณผ๋ฌผ ์™„์„ฑ์„ ์ฑ…์ž„์กŒ์Šต๋‹ˆ๋‹ค. ๋Œ€๊ทœ๋ชจ ํŠธ๋ž˜ํ”ฝ์„ ์ฒ˜๋ฆฌํ•˜๊ณ  ๋ณต์žกํ•œ ๋ฌธ์ œ๋ฅผ ํ•ด๊ฒฐํ•˜์—ฌ ์‹ ๋ขฐํ•  ์ˆ˜ ์žˆ๋Š” ์„œ๋น„์Šค๋ฅผ ๊ฐœ๋ฐœํ•˜๋Š” ๋ฐฑ์—”๋“œ ๊ฐœ๋ฐœ์ž๋กœ ์„ฑ์žฅํ•˜๊ณ ์ž ํ•ฉ๋‹ˆ๋‹ค.


๊ต์œก / ํ•™๋ ฅ

[๋ถ€ํŠธ์บ ํ”„] Krafton Jungle SW/AI Lab 12๊ธฐ [2026.03.03 ~ 2026.07.30]

  • KRAFTON์—์„œ ์ง„ํ–‰ํ•œ ์ปดํ“จํ„ฐ๊ณตํ•™ ๊ธฐ๋ณธ๊ธฐ๋ฅผ ๊ฐ–์ถ”๋Š” AI-Native ์ธ์žฌ ์–‘์„ฑ ํ”„๋กœ๊ทธ๋žจ ์ง„ํ–‰.
    • mini-Redis, React ํ”„๋ ˆ์ž„์›Œํฌ, ๋””์Šคํฌ๊ธฐ๋ฐ˜ MiniDB ๊ตฌํ˜„.
    • x86-64๊ธฐ๋ฐ˜ ์šด์˜์ฒด์ œ Pintos ๊ตฌํ˜„.
    • Self-Attention๊ธฐ๋ฐ˜ GPT-3 ๋ชจ๋ธ ๊ตฌํ˜„.
    • ์ตœ์ข… ํ”„๋กœ์ ํŠธ ์›Œํฌํ”Œ๋กœ์šฐ ์ž๋™ํ™” ํ”Œ๋žซํผ Nodease ์ง„ํ–‰.

[๋ถ€ํŠธ์บ ํ”„] SSAFY 13๊ธฐ [2025.01 ~ 2025.03]

  • SSAFY(์‚ผ์„ฑ์ฒญ๋…„SW ยท AI์•„์นด๋ฐ๋ฏธ). ์ทจ์—… ์ค€๋น„์ƒ ๋Œ€์ƒ ์†Œํ”„ํŠธ์›จ์–ด ๋ฐ AI ์ธ์žฌ ์–‘์„ฑ ํ”„๋กœ๊ทธ๋žจ ์ง„ํ–‰
    • ์‚ผ์„ฑ ์—ญ๋Ÿ‰ํ…Œ์ŠคํŠธ Bํ˜• ์ทจ๋“

[๊ต์œก] ๊ฐ•๋‚จ๋Œ€ํ•™๊ต-๋ฒค์ฒ˜์Šคํƒ€ํŠธ์—…์•„์นด๋ฐ๋ฏธ [2024.03 ~ 2025.02]

  • ๋ฒค์ฒ˜์Šคํƒ€ํŠธ์—… ์ฃผ๊ด€ ์›น ๊ฐœ๋ฐœ์ž ์–‘์„ฑ ํ”„๋กœ๊ทธ๋žจ
    • SpringBoot, Flask ํ”„๋ ˆ์ž„์›Œํฌ ๊ต์œก ์ด์ˆ˜

[ํ•™๋ ฅ] ๊ฐ•๋‚จ๋Œ€ํ•™๊ต [2019.03 ~ 2025.02]

  • ๊ฐ•๋‚จ๋Œ€ํ•™๊ต ํ•™์‚ฌ ์กธ์—… ยท ํ•™์  4.23 / 4.5
    • [์ฃผ์ „๊ณต] ์†Œํ”„ํŠธ์›จ์–ด์ „๊ณต / [๋ณต์ˆ˜์ „๊ณต] ๋ฐ์ดํ„ฐ์‚ฌ์ด์–ธ์Šค

์ˆ˜์ƒ

  • [์ค‘์†Œ๋ฒค์ฒ˜๊ธฐ์—…๋ถ€] 2024 ๋ฒค์ฒ˜์Šคํƒ€ํŠธ์—… ์•„์นด๋ฐ๋ฏธ ํ•ด์ปคํ†ค | ์žฅ๋ ค์ƒ
  • [๊ฐ•๋‚จ๋Œ€ํ•™๊ต] 2024 ํ•™์ˆ ์„ธ๋ฏธ๋‚˜ ํŒ€-๋ผ๋”” | ์ตœ์šฐ์ˆ˜์ƒ
  • [๊ฐ•๋‚จ๋Œ€ํ•™๊ต] 2019 ํ•™์ˆ ์„ธ๋ฏธ๋‚˜ ํŒ€-์ž์œจ์ฃผํ–‰ | ์žฅ๋ ค์ƒ

์ž๊ฒฉ์ฆ

  • ์‚ผ์„ฑ SW ์—ญ๋Ÿ‰ํ…Œ์ŠคํŠธ Bํ˜• (์‚ผ์„ฑ / 2025.02)
  • SQLD (ํ•œ๊ตญ๋ฐ์ดํ„ฐ์‚ฐ์—…์ง„ํฅ์› / 2025.06.27)
  • ์ •๋ณด์ฒ˜๋ฆฌ๊ธฐ์‚ฌ (ํ•œ๊ตญ์‚ฐ์—…์ธ๋ ฅ๊ณต๋‹จ / 2024.06.18)

์ฃผ์š” ํ”„๋กœ์ ํŠธ

[Krafton Jungle] LLM ์›Œํฌํ”Œ๋กœ์šฐ ์ž๋™ํ™” ํ”Œ๋žซํผ โ€” Nodease

n8n ์Šคํƒ€์ผ์˜ ๋…ธ๋“œ ๊ธฐ๋ฐ˜ ์›Œํฌํ”Œ๋กœ์šฐ์— LLMOps์™€ ๊ธฐ์—…์šฉ RBAC๋ฅผ ๊ฒฐํ•ฉํ•œ AI ์›Œํฌํ”Œ๋กœ์šฐ ์ž๋™ํ™” ์„œ๋น„์Šค์ž…๋‹ˆ๋‹ค.

Screenshot 2026-09-18 at 12 56 30โ€ฏAM

๊ธฐ๊ฐ„/์ธ์›: 2026.06.19 - 2026.07.25 ยท 5์ฃผ ยท 5๋ช…

์—ญํ• : ํŒ€์žฅ(์ผ์ • ๊ด€๋ฆฌ, ๋ฐœํ‘œยท๋ฐ๋ชจ ์ค€๋น„), RBAC ๋ฐ RAG ๊ถŒํ•œ ๊ฒฝ๊ณ„ ์ผ๋ถ€ ์„ค๊ณ„ยท๊ตฌํ˜„

์Šคํ‚ฌ: Python3.11, FastAPI, PostgreSQL, NextJS, Docker compose, AWS

GitHub: https://github.com/yoonki1207/nodease

๋ฐœํ‘œ ์˜์ƒ: https://www.youtube.com/watch?v=HAmCgrVxbWM

  • ๋Œ€๊ทœ๋ชจ Markdown ๋ฌธ์„œ ๊ฐœ๋ฐœ ๋ฐฉ๋ฒ•๋ก ์—์„œ TDD ๋„์ž…์œผ๋กœ ๋ฌธ์„œ 5์‹œ๊ฐ„ ์ž‘์„ฑ -> ๋ณ‘ํ•ฉ ์ฃผ๊ธฐ 3์‹œ๊ฐ„์œผ๋กœ ๋‹จ์ถ•.
  • LLM model routing ๋น„์šฉ 57% ์ ˆ๊ฐ, ์‘๋‹ต ์‹œ๊ฐ„ 20% ๋‹จ์ถ•.
  • ์‚ฌ์šฉ์ž ๊ถŒํ•œ ๊ธฐ๋ฐ˜ RAG ๊ฒ€์ƒ‰ ์ œํ•œ ๊ตฌํ˜„.
  • ์ด๋ฒคํŠธ ์œ ์‹ค ๋ฌธ์ œ์—์„œ ์‚ฌ์šฉ์ž ํ–‰๋™๊ณผ ๊ฐ์‚ฌ๋กœ๊ทธ๋ฅผ ๊ฐ™์€ ํŠธ๋žœ์žญ์…˜์œผ๋กœ ์ฒ˜๋ฆฌํ•˜๋Š” dual write๋ฌธ์ œ๋ฅผ outbox ํŒจํ„ด์œผ๋กœ ํ•ด๊ฒฐ.
  • ํ”„๋กฌํ”„ํŠธ๋งŒ์œผ๋กœ ์›Œํฌํ”Œ๋กœ์šฐ๋ฅผ ๊ตฌ์„ฑํ•˜๋Š” Agent Builder ๊ตฌํ˜„.

[Krafton Jungle] KAIST Pintos

KAIST Pintos๋Š” x86-64 ์•„ํ‚คํ…์ฒ˜ ๊ธฐ๋ฐ˜ ๊ต์œก์šฉ ์šด์˜์ฒด์ œ๋ฅผ ๊ตฌํ˜„ํ•˜๋Š” ์‹ค์Šต ๊ณผ์ œ์ž…๋‹ˆ๋‹ค. ์ปค๋„ ์Šค๋ ˆ๋“œ์˜ ์Šค์ผ€์ฅด๋ง๊ณผ ๊ฐ€์ƒ ๋ฉ”๋ชจ๋ฆฌ๋ฅผ ๊ตฌํ˜„ํ–ˆ์Šต๋‹ˆ๋‹ค.

Screenshot 2026-09-18 at 12 57 35โ€ฏAM

๊ธฐ๊ฐ„: 2026.04.24 - 2026.05.21 ยท 4์ฃผ

์—ญํ• : ์šฐ์„ ์ˆœ์œ„ ์„ ์  ์Šค์ผ€์ค„๋ง, SemaphoreยทCondition Variable ์šฐ์„ ์ˆœ์œ„ ์ฒ˜๋ฆฌ

๊ธฐ์ˆ : C

GitHub: https://github.com/Jungle-12-303/week09-team-05-pintos-threads

  • ์ดˆ๊ธฐ ๋ฉ”๋ชจ๋ฆฌ ์ ์žฌ ๋น„์šฉ์„ ์ค„์ด๊ธฐ ์œ„ํ•ด page fault๋ฅผ ํ†ตํ•ด ํ•„์š”ํ•œ ํŽ˜์ด์ง€๋งŒ ์ ์žฌํ•˜๋Š” demand paging(lazy loading) ๊ตฌํ˜„.
  • Priority donation ์—ญ์ „ ๋ฐฉ์ง€ ๊ตฌํ˜„ ์ค‘ ์“ฐ๋ ˆ๋“œ ๋Œ€๊ธฐ์—ด์˜ ์„ ํƒ ๋ณต์žก๋„๋ฅผ O(n log n)์—์„œ O(n)์œผ๋กœ ๊ฐœ์„ .
  • swap ๋ฉ”๋ชจ๋ฆฌ๋ฅผ ์œ„ํ•ด ๋ฌผ๋ฆฌ ๋ฉ”๋ชจ๋ฆฌ frame eviction์„ second-chance/clock ๋ฐฉ์‹์œผ๋กœ ๊ตฌํ˜„.

[๊ฐ•๋‚จ๋Œ€ํ•™๊ต] ๋ชจ์—ฌ๋ผ ์ง€๊ธˆ(MOJI)

์‚ฌ์šฉ์ž๊ฐ€ ์ฆ‰์„ ๋ชจ์ž„์„ ๋งŒ๋“ค๊ณ  ์ฐธ์—ฌํ•  ์ˆ˜ ์žˆ๋Š” ์›น ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜์ž…๋‹ˆ๋‹ค.

Screenshot 2026-09-18 at 1 25 38โ€ฏAM

๊ธฐ๊ฐ„/์ธ์›: 2023.07.01 - 2024.02.20 ยท 7๊ฐœ์›” ยท 6๋ช…

์—ญํ• : ๋ฐฑ์—”๋“œ โ€” ๋ฒˆ๊ฐœ ๋ชจ์ž„ API, ์‹ค์‹œ๊ฐ„ ์ฑ„ํŒ…

๊ธฐ์ˆ : Java 17, Spring Boot 3.1, STOMP/WebSocket, MongoDB

GitHub: https://github.com/AUNAE-WEB-Dev

  • STOMP์™€ MongoDB๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ ์ฑ„ํŒ…๋ฐฉ ์žฌ์ ‘์† ์‹œ ์ด์ „ ๋Œ€ํ™” ๋‚ด์—ญ ์กฐํšŒ ๊ตฌํ˜„.
  • ์ฑ„ํŒ… ์ด๋ ฅ ์กฐํšŒ๋ฅผ ๋ฌดํ•œ ์Šคํฌ๋กค ์ปค์„œ ๊ธฐ๋ฐ˜ ์ฑ„ํŒ… ์ด๋ ฅ ์กฐํšŒ ๊ธฐ๋Šฅ ๊ตฌํ˜„.
  • ์ฑ„ํŒ…๋ฐฉ ์ƒ์„ฑ ๋ฐ ์‚ฌ์šฉ์ž ์ฐธ์—ฌยทํ‡ด์žฅ ์ด๋ฒคํŠธ ๋ฐœ์ƒ ์‹œ ํ•ด๋‹น ์ฑ„ํŒ…๋ฐฉ์— ์‹œ์Šคํ…œ ์•Œ๋ฆผ ๋ฉ”์‹œ์ง€๊ฐ€ ์ „์†ก๋˜๋„๋ก ๊ตฌํ˜„.

[๋ฒค์ฒ˜์Šคํƒ€ํŠธ์—…์•„์นด๋ฐ๋ฏธ ํ•ด์ปคํ†ค] ๋Œ€ํ•™์ƒ ์‹ฌ๋ถ€๋ฆ„ ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜ โ€” Took

โ€œ์šฐ๋ฆฌ ํ•™๊ต๋ฟ ์•„๋‹ˆ๋ผ ์ฃผ๋ณ€ ํ™˜๊ฒฝ์— ๋„์›€์ด ๋˜๋Š” ๋น„์ฆˆ๋‹ˆ์Šค ์„œ๋น„์Šค๋ฅผ ๋งŒ๋“œ์‹œ์˜คโ€๋ผ๋Š” ์ฃผ์ œ์—์„œ ํ•™์ƒ ๊ฐ„ ์‹ฌ๋ถ€๋ฆ„ ์š”์ฒญ๊ณผ ์ˆ˜ํ–‰์„ ์—ฐ๊ฒฐํ•ด ์ฃผ๋Š” ์ค‘๊ฐœ ์„œ๋น„์Šค๋ฅผ ๊ฐœ๋ฐœํ–ˆ์Šต๋‹ˆ๋‹ค.

Screenshot 2026-09-20 at 12 04 31โ€ฏAM

๊ธฐ๊ฐ„/์ธ์›: 2024.08.19 - 2024.08.20 ยท 1๋ฐ• 2์ผ ยท 4๋ช…

์—ญํ• : ๋ฐฑ์—”๋“œ โ€” ๋กœ๊ทธ์ธยทํšŒ์›๊ฐ€์ž…, ์ •์‚ฐ, ์‹ฌ๋ถ€๋ฆ„ ์š”์ฒญยท์ˆ˜ํ–‰

๊ธฐ์ˆ : Flutter, Dart, Python, FastAPI

GitHub: https://github.com/SURFERTON/backend

  • ์ค‘๊ฐ„์— ๊ธฐํš์ด ๋ณ€๊ฒฝ๋  ์ˆ˜ ์žˆ๋Š” ์ƒํ™ฉ์„ ๊ณ ๋ คํ•˜์—ฌ, ์งง์€ ์‹œ๊ฐ„ ์•ˆ์— API๋ฅผ ์žฌ๊ตฌ์„ฑํ•˜๊ธฐ ์œ„ํ•ด FastAPI๋ฅผ ์„ ํƒํ•˜์—ฌ ๊ฐœ๋ฐœ.
  • ์š”์ฒญ์ž์™€ ์ˆ˜ํ–‰์ž์˜ ์ฑ…์ž„์„ ๊ตฌ๋ถ„ํ•  ์ˆ˜ ์žˆ๋„๋ก ์š”์ฒญยท์ˆ˜ํ–‰ยท์™„๋ฃŒยท์ •์‚ฐ์˜ ์ƒํƒœ ํ๋ฆ„๊ณผ ๋‹จ๊ณ„๋ณ„ ์™„๋ฃŒ ์กฐ๊ฑด์„ ์„ค๊ณ„.
  • ์ผ๋ฐฉ์ ์ธ ์™„๋ฃŒ ์ฒ˜๋ฆฌ์™€ ์ค‘๋ณตยท๋ˆ„๋ฝ ์ •์‚ฐ์„ ๋ฐฉ์ง€ํ•˜๊ณ , ์ง„ํ–‰ ์ด๋ ฅ์œผ๋กœ ๋ถ„์Ÿ ์ƒํ™ฉ์„ ํ™•์ธํ•  ์ˆ˜ ์žˆ๊ฒŒ ์„ค๊ณ„.

ํ™œ๋™

[์ธํ„ด] ์•„์ด๋‚˜๋น„์‹œ์Šคํ…œ์ฆˆ โ€” LiDAR ๋ทฐ์–ด

  • ๊ธฐ๊ฐ„: 2024.07.01 - 2024.07.26 ยท 4์ฃผ
  • ๊ธฐ์ˆ : C++, MFC
  • ์ž์œจ์ฃผํ–‰ ์ž๋™์ฐจ์˜ LiDAR ์„ผ์„œ๊ฐ€ ์ƒ์„ฑํ•œ LAS ํŒŒ์ผ์˜ ์ด์ง„ ๊ตฌ์กฐ๋ฅผ ์กฐ์‚ฌํ•˜๊ณ , #pragma pack์„ ์ ์šฉํ•œ ๊ตฌ์กฐ์ฒด๋กœ ๋ฐ์ดํ„ฐ๋ฅผ ์ฝ์–ด 2D ์‹œ๊ฐํ™” ํ”„๋กœ๊ทธ๋žจ ์ œ์ž‘.
  • ์ตœ์†Œ ์š”๊ตฌ์‚ฌํ•ญ์ธ 2D ์‹œ๊ฐํ™”๋ฅผ ์™„์„ฑํ•œ ๋’ค ์‚ฌ์šฉ์ž์˜ ํŽธ์˜๋ฅผ ๊ณ ๋ คํ•ด Camera ๊ตฌ์กฐ์ฒด, ํ–‰๋ ฌ ๋ณ€ํ™˜๊ณผ ์‚ผ๊ฐํ•จ์ˆ˜๋ฅผ ์ ์šฉํ•ด 3D ๋ทฐ์–ด๋กœ ํ™•์žฅ ๊ตฌํ˜„.
  • ๋งˆ์šฐ์Šค์™€ ํ‚ค๋ณด๋“œ ์ž…๋ ฅ์œผ๋กœ ์‹œ์  ์ด๋™ยทํšŒ์ „ยทํ™•๋Œ€ยท์ถ•์†Œ ๊ธฐ๋Šฅ์„ ๊ตฌํ˜„ํ•˜๊ณ , ๋ Œ๋”๋งํ•  ํฌ์ธํŠธ ์ˆ˜๋ฅผ ์กฐ์ ˆํ•ด ์ƒํ˜ธ์ž‘์šฉ ์‹œ ๋ฐœ์ƒํ•˜๋Š” ์ง€์—ฐ ๊ฐ์†Œ.

[์™ธ์ฃผ] ํฌ๋ชฝ ๊ฐœ์ธ ์™ธ์ฃผ

  • ๊ธฐ๊ฐ„: 2023.12 - 2024.03 ยท 3๊ฐœ์›”
  • Python ์ด๋ฏธ์ง€ ์ผ๊ด„ ํŽธ์ง‘ ํ”„๋กœ๊ทธ๋žจ ์ œ์ž‘.
  • ๊ด‘๊ณ  ๊ธฐํš ๋ฐ ์ œ์ž‘ ์ „๋ฌธ ๊ธฐ์—… rmsid.net ์›น ํŽ˜์ด์ง€ ํผ๋ธ”๋ฆฌ์‹ฑ.
  • ์š”๊ตฌ์‚ฌํ•ญ์— ๋”ฐ๋ผ Java์™€ Spring Boot๋กœ ๊ธฐ์กด ์„œ๋น„์Šค์— AppleยทFacebookยทGoogleยทNaverยทKakao ์†Œ์…œ ๋กœ๊ทธ์ธ ์—ฐ๋™.

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