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Hi! I'm Juno πŸ‘‹

Full-stack developer specializing in Legacy Migration, System Stabilization, and AI-driven Service Evolution.

πŸ‡¬πŸ‡§ English Version

I am a software engineer with 8 years of experience, skilled in transforming legacy systems into modern architectures while maintaining business continuity. I focus on solving structural constraints and building cost-effective, scalable solutions.

πŸ’Ό Experience & Contributions

  • Refactored tightly coupled Classic ASP monoliths into a Layered Architecture with ASP.NET RESTful APIs, significantly improving maintainability and decoupling frontend dependencies.
  • Successfully built a real-time video lesson platform by overcoming legacy infrastructure limits (e.g., HTTP/2 unsupported servers) and reducing costs by 80%.
  • Designed an on-demand AI feedback pipeline using Gemini API, STT, and TTS, automating lesson reviews and minimizing manual workload for instructors.
  • Standardized complex Payment Gateway (PG) integrations and developed automated back-office tools to streamline operations and ensure data integrity.

πŸš€ Current Focus & Projects

  • Building Scalable Backend Systems with Java, Spring Boot, and JPA/Hibernate.
  • Developing Interactive Front-end applications using Next.js, TypeScript, and Tailwind.
  • Implementing High-concurrency ticketing systems to demonstrate expertise in lock management and traffic handling.

🌱 Development Philosophy

  • I don't just write code; I find the most practical solution to business problems.
  • I prioritize features that provide real value to end-users and operational teams.
  • I believe in gradual, stable modernization over risky "big bang" rewrites.

ꡬ쑰적 ν•œκ³„λ₯Ό 기술둜 λŒνŒŒν•˜κ³ , λΉ„μ¦ˆλ‹ˆμŠ€ κ°€μΉ˜λ₯Ό λ†’μ΄λŠ” μ‹œμŠ€ν…œμ„ λ§Œλ“œλŠ” κ°œλ°œμžμž…λ‹ˆλ‹€.

πŸ’Ό 이런 일을 ν•΄μ™”μ–΄μš”

  • κ°•κ²°ν•©λœ Classic ASP μ‹œμŠ€ν…œμ„ κ³„μΈ΅ν˜• μ•„ν‚€ν…μ²˜ 기반의 RESTful API둜 μ „ν™˜ν•˜μ—¬ ν”„λ‘ νŠΈμ—”λ“œ μ˜μ‘΄μ„±μ„ μ œκ±°ν•˜κ³  ν™•μž₯성을 ν™•λ³΄ν–ˆμŠ΅λ‹ˆλ‹€.
  • 인프라 μ œμ•½(HTTP/2 미지원 λ“±)을 기술적으둜 ν•΄κ²°ν•˜μ—¬ WebRTC 화상 μˆ˜μ—… ν”Œλž«νΌμ„ κ΅¬μΆ•ν•˜κ³ , 운영 λΉ„μš©μ„ 80% μ ˆκ°ν–ˆμŠ΅λ‹ˆλ‹€.
  • Gemini API / STT / TTSλ₯Ό ν™œμš©ν•œ 'μžλ™ ν”Όλ“œλ°± νŒŒμ΄ν”„λΌμΈ'을 κ΅¬μΆ•ν•˜μ—¬, κ°•μ‚¬μ˜ 업무 뢀담을 쀄이고 ν•™μŠ΅μžμ—κ²ŒλŠ” μ‹€μ‹œκ°„ 볡슡 κ²½ν—˜μ„ μ œκ³΅ν–ˆμŠ΅λ‹ˆλ‹€.
  • 톡합 결제 λͺ¨λ“ˆμ„ ν‘œμ€€ν™”ν•˜κ³  운영 μžλ™ν™” 도ꡬ(Back-office)λ₯Ό κ°œλ°œν•˜μ—¬ 데이터 정합성을 ν™•λ³΄ν•˜κ³  운영 νš¨μœ¨μ„ λ†’μ˜€μŠ΅λ‹ˆλ‹€.

πŸš€ 이런 μ€€λΉ„λ₯Ό ν•˜κ³  μžˆμ–΄μš”

  • Backend: Java, Spring Boot, JPA, QueryDSL (Transitioning from .NET)
  • Frontend: Next.js, TypeScript, Tailwind, Zustand
  • Architecture: MSA, Docker, CI/CD pipelines
  • Project: λŒ€κ·œλͺ¨ νŠΈλž˜ν”½ 처리λ₯Ό κ³ λ €ν•œ μˆ˜κ°• μ‹ μ²­/예맀 μ‹œμŠ€ν…œ (Concurrency Control)

🌱 이런 κ°œλ°œμ„ μ§€ν–₯ν•΄μš”

  • κΈ°μˆ μ„ μœ„ν•œ 기술이 μ•„λ‹Œ, μ‹€μ œ 문제λ₯Ό ν•΄κ²°ν•˜λŠ” κΈ°μˆ μ„ μ”λ‹ˆλ‹€.
  • λ¬΄λ¦¬ν•œ μž¬κ°œλ°œλ³΄λ‹€λŠ” μ•ˆμ •μ μΈ μ„œλΉ„μŠ€ μš΄μ˜μ„ μ „μ œλ‘œ ν•œ 단계적 ν˜„λŒ€ν™”λ₯Ό μ„ ν˜Έν•©λ‹ˆλ‹€.
  • λ³΅μž‘ν•œ 기술적 문제λ₯Ό λΉ„κ°œλ°œμž λ™λ£Œλ„ 이해할 수 μžˆλ„λ‘ μ‰½κ²Œ μ„€λͺ…ν•˜κ³  λ¬Έμ„œν™”ν•©λ‹ˆλ‹€.

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