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yudility/README.md

๐Ÿš€ YUJIN PARK

Backend Engineer

Typing SVG

Gmail Portfolio

๐Ÿ’ป Tech Stack

๐ŸŽฏ Backend Core

Java Spring Boot Spring Security JPA QueryDSL

๐Ÿ—„๏ธ Database & Cache

PostgreSQL MariaDB

โ˜๏ธ Infrastructure & DevOps

AWS Docker

๐Ÿ”ง Development Tools

Git JUnit5 Mockito

๐ŸŒฑ Learning

Python TensorFlow Kafka Redis


๐ŸŽฏ Featured Projects

Tech: Java Spring Boot JPA PostgreSQL Docker
Role: Backend Developer

๐Ÿš€ N+1 ์ฟผ๋ฆฌ ๋ฌธ์ œ๋ฅผ QueryDSL๋กœ ํ•ด๊ฒฐํ•˜์—ฌ ์ตœ๋Œ€ 17.8๋ฐฐ ์„ฑ๋Šฅ ๊ฐœ์„ 

  • ์ฑ„ํŒ…๋ฐฉ ๋ชฉ๋ก ์กฐํšŒ ์ตœ์ ํ™”: JOIN๊ณผ GROUP BY๋ฅผ ํ™œ์šฉํ•œ ๋‹จ์ผ ์ฟผ๋ฆฌ ๊ตฌํ˜„
  • 100๊ฐœ ๋ฐ์ดํ„ฐ ๊ธฐ์ค€ ๋‹จ์ผ ์‹คํ–‰ 4.8๋ฐฐ, ํ‰๊ท  17.8๋ฐฐ ์„ฑ๋Šฅ ํ–ฅ์ƒ ๋‹ฌ์„ฑ

Tech: Spring Boot QueryDSL PostgreSQL JUnit 5 Docker
Role: Team Leader & Backend

๐Ÿงฉ ํ•˜์ด๋ธŒ๋ฆฌ๋“œ ์œ ์‚ฌ๋„ ์•Œ๊ณ ๋ฆฌ์ฆ˜์œผ๋กœ ๊ด€์‹ฌ์‚ฌ ์ค‘๋ณต ๋ฌธ์ œ ํ•ด๊ฒฐ

  • ์ž์นด๋“œ ์œ ์‚ฌ๋„ + ๋ ˆ๋ฒค์Šˆํƒ€์ธ ๊ฑฐ๋ฆฌ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ์กฐํ•ฉ์œผ๋กœ 80% ์œ ์‚ฌ๋„ ๊ฐ์ง€
  • TDD ๋ฐฉ๋ฒ•๋ก  ์ ์šฉ์œผ๋กœ ๋‹ด๋‹น ๋„๋ฉ”์ธ 85% ํ…Œ์ŠคํŠธ ์ปค๋ฒ„๋ฆฌ์ง€ ๋‹ฌ์„ฑ

๐Ÿ’ฌ Discodeit - Discord Clone 2025.01 ~ 2025.06

Tech: Spring Boot Spring Security SSE JWT Redis Kafka Docker
Role: Backend Developer

โšก ๋ถ„์‚ฐ ์‹œ์Šคํ…œ ๋Œ€๋น„ ์•„ํ‚คํ…์ฒ˜ ๊ตฌ์ถ•

  • Spring Event โ†’ Kafka ๊ธฐ๋ฐ˜ ์ด๋ฒคํŠธ ์ฒ˜๋ฆฌ ์‹œ์Šคํ…œ ์ „ํ™˜
  • SSE ๊ธฐ๋ฐ˜ ์‹ค์‹œ๊ฐ„ ์ฑ„ํŒ… ์‹œ์Šคํ…œ ๊ตฌํ˜„
  • Redis ๋ถ„์‚ฐ ์บ์‹œ๋กœ ์„œ๋ฒ„ ๊ฐ„ ์ผ๊ด€์„ฑ ๋ณด์žฅ

Tech: Java Spring Boot JPA MariaDB OAuth 2.0
Role: Backend Developer

๐Ÿƒโ€โ™‚๏ธ ํ•ด์ปคํ†ค์—์„œ 5์ผ ๋งŒ์— ์ตœ์  ๊ฒฝ๋กœ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ๊ตฌํ˜„

  • ์ž์ฒด ๊ตฌํ˜„ํ•œ ๋ฐฉ๋ฌธ ์ˆœ์„œ ์ตœ์ ํ™” + Tmap API ๋„๋ณด ์‹œ๊ฐ„ ๊ณ„์‚ฐ
  • Spring Security + JWT + OAuth 2.0 ์ธ์ฆ ์‹œ์Šคํ…œ

Tech: Java Spring Boot JPA MariaDB
Role: Backend Developer

โšก 2์ผ๋งŒ์— ๋‹ค์ต์ŠคํŠธ๋ผ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ๊ธฐ๋ฐ˜ ๊ฒฝ๋กœ ์„œ๋น„์Šค ์™„์„ฑ

  • ๊ต๋‚ด ์‹œ์„ค์„ ๋…ธ๋“œ, ๋„๋ณด ๊ฒฝ๋กœ๋ฅผ ์—ฃ์ง€๋กœ ํ•˜๋Š” ๊ทธ๋ž˜ํ”„ ๊ตฌ์กฐ ์„ค๊ณ„
  • ์‹ค์ œ ์‚ฌ์šฉ ๊ฐ€๋Šฅํ•œ ์ˆ˜์ค€์˜ MVP ์„œ๋น„์Šค ๊ตฌํ˜„

Tech: Lua Game Modding
Role: Solo Developer

๐ŸŒŸ ๊ฐœ๋ฐœ ์ง€์‹ ์—†์ด ๋…ํ•™์œผ๋กœ ๊ฒŒ์ž„ ์ปค์Šคํ…€ ์บ๋ฆญํ„ฐ ๊ตฌํ˜„

  • Steam Workshop 6,200๋ช… ๊ตฌ๋… ๋‹ฌ์„ฑ
  • ์ปดํ“จํ„ฐ๊ณตํ•™๊ณผ ํŽธ์ž… ๊ฒฐ์‹ฌ์˜ ๊ณ„๊ธฐ๊ฐ€ ๋œ ์ฒซ ๊ฐœ๋ฐœ ํ”„๋กœ์ ํŠธ

๐ŸŽ“ Education & Career

๐Ÿ’ผ Experience

ํ”„๋กœ๊ทธ๋ž˜๋ฐ ๊ฐ•์‚ฌ | ์ƒ์ƒ์•„์ด ํ‚น์ฝฉ์„œ์  | 2024.08 ~ ํ˜„์žฌ

  • ์ดˆ๋“ฑ~๊ณ ๋“ฑ ๋Œ€์ƒ Python, Scratch, Roblox Studio ์ˆ˜์ค€๋ณ„ ๋งž์ถคํ˜• ์ปค๋ฆฌํ˜๋Ÿผ ์„ค๊ณ„ ๋ฐ ๊ต์œก

๐Ÿ“š Education

  • ์ฝ”๋“œ์ž‡ ์Šคํ”„๋ฆฐํŠธ | AWS ํ™œ์šฉ Spring Backend 1๊ธฐ | 2024.12 ~ 2025.07
  • ์ดํ™”์—ฌ์ž๋Œ€ํ•™๊ต | ์ปดํ“จํ„ฐ๊ณตํ•™๊ณผ | 2021.03 ~ 2024.08

๐Ÿ… Certifications

  • SQLD (2024.09)
  • ์ •๋ณด์ฒ˜๋ฆฌ๊ธฐ์‚ฌ (2024.06)
  • ๋„คํŠธ์›Œํฌ ๊ด€๋ฆฌ์‚ฌ 2๊ธ‰ (2020.01)

๐Ÿ† Awards

  • ์šฐ์ˆ˜์ƒ | ๊ต๋‚ด ์บก์Šคํ†ค ๋””์ž์ธ ํ”„๋กœ์ ํŠธ ๋Œ€ํšŒ | 2023.05

๐Ÿ“Š GitHub Analytics

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๐Ÿ’ซ "๋™๋ฃŒ๋“ค๊ณผ ํ•จ๊ป˜ ์„ฑ์žฅํ•ด๋‚˜๊ฐ€๋Š” ๊ฒƒ์— ์ฆ๊ฑฐ์›€์„ ๋А๋ผ๋Š” ๊ฐœ๋ฐœ์ž์ž…๋‹ˆ๋‹ค."

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