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  • LTMetric
  • Seoul

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@springdoc

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Achievement: Pair ExtraordinaireAchievement: Public SponsorAchievement: Pull Sharkx2Achievement: Quickdraw

Achievements

Achievement: Pair ExtraordinaireAchievement: Public SponsorAchievement: Pull Sharkx2Achievement: Quickdraw

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jisub-dev/README.md

Operating Production Systems · Open Source Contributor

👋 About

Backend engineer operating a 24/7 high-availability public service system. Contributing to Spring Framework, MyBatis, and Reactor projects.

Focus areas: Transaction processing · Memory management · Reactive programming · Production operations

🌟 Open Source Contributions

✅ Merged

MyBatis · PR #3636

  • Fixed ThreadLocal memory leak in lazy loading proxy implementations
  • Resolved 4-year-old issue affecting thread pool environments
  • Added ErrorContext cleanup in 3 proxy classes

Reactor · PR #4207 (Co-author)

  • Enhanced subscription patterns documentation
  • Added warnings about fire-and-forget anti-patterns
  • Included in Reactor 3.7.17 milestone

🔄 In Review

Spring Framework · PR #36323

  • Enhanced transaction management documentation with programmatic configuration
  • Added Java and Kotlin examples alongside XML
  • Extracted code to separate files following Spring's documentation patterns

📚 View detailed retrospectives →

💼 Experience

Backend Engineer @ LT Metric

2026.02 - Present

Operating a 24/7 road name address public service system.

  • Production infrastructure: Spring Boot, Redis, Oracle
  • Redis caching layer and session management
  • Oracle database operations and query optimization
  • GitLab CI/CD automated deployment pipeline
  • System monitoring and incident response

Stack: Spring Boot · Redis · Oracle · GitLab CI/CD · Docker · Linux

Backend Developer @ Allforland

2025.09 - 2025.12

Backend development and server-side implementation.

🛠️ Tech Stack

Production

Spring Redis Oracle Docker Linux

Languages & Tools

Java C C++ MySQL Git GitHub

🏆 Achievement

12th Korea SW Convergence Hackathon - Excellence Award Ministry of Science and ICT (과학기술정보통신부)

📫 Contact

Email: kimjiseob1209@gmail.com

Instagram Velog Notion

📊 Stats

GitHub stats Top Langs

🧮 Algorithm

Solved.ac Mazandi

Pinned Loading

  1. YONDU-Backend YONDU-Backend Public

    연두 애플리케이션 - 백엔드 팀

    Java

  2. BarkingSolver BarkingSolver Public

    백준 풀이

    C++

  3. reactor/reactor-core reactor/reactor-core Public

    Non-Blocking Reactive Foundation for the JVM

    Java 5.2k 1.2k

  4. LandMark-all4land/landmark LandMark-all4land/landmark Public

    랜드마크 Repository입니다.

    TypeScript 1

  5. mybatis-3 mybatis-3 Public

    Forked from mybatis/mybatis-3

    MyBatis SQL mapper framework for Java

    Java

  6. spring-framework spring-framework Public

    Forked from spring-projects/spring-framework

    Spring Framework

    Java