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dahyeon1216/README.md

Hi, I'm Dahyeon πŸ‘‹

I am a backend developer interested in information security and system architecture, with hands-on experience in backend development and cloud infrastructure.

I focus on understanding how systems work internally and how security can be applied by design.


πŸ› οΈ Tech Stacks




πŸ§‘β€πŸ’» Contact me




⭐ What I can help with ⭐

Area Skills
Backend Spring Boot, REST API, Backend System Design
Database MySQL, Redis, Schema Design
Cloud AWS (EC2, RDS, S3), Docker
System Linux, Networking basics
Testing API Testing, Postman, Swagger
Development Bug fixing, Debugging
Documentation Technical Documentation
Collaboration GitHub Project Management

Available for freelance and remote technical support opportunities.

πŸ’‘ Focus Areas

Backend Development | Cloud Infrastructure | System Architecture | Security Engineering


πŸ€ Projects


πŸ“š NetLibrary – IoT Library Management System

πŸ”— GitHub Repository
https://github.com/SMWU-2025-02-Network/2025-02-Network-Server

Backend system integrating seat management, real-time chat, and sensor monitoring.

βš™οΈ Tech Stack

πŸš€ Key Contributions

βœ” Designed TCP socket communication server
βœ” Implemented multi-thread architecture
βœ” Built real-time message routing system
βœ” Designed seat management logic
βœ” Applied role-based access control


✈️ UniTrip – Travel Platform Backend

πŸ”— GitHub Repository
https://github.com/SoluxteamMerge/30th_1_Merge_UniTrip_Backend

REST API based travel service backend.

βš™οΈ Tech Stack

πŸš€ Key Contributions

βœ” Developed REST APIs
βœ” Designed database schema
βœ” Built AWS deployment environment
βœ” Implemented authentication features


πŸ›  Actionary – Productivity Platform

πŸ”— GitHub Repository
https://github.com/sm-solux/30th_2_solux_Actionary_back

All-in-one productivity platform for habit and study management.

βš™οΈ Tech Stack


πŸš€ Key Contributions

βœ” Led project planning and team coordination
βœ” Developed backend APIs
βœ” Supported AWS infrastructure setup
βœ” Managed GitHub collaboration workflow


🧠 Q&B – Book Q&A Community Platform

πŸ”— GitHub Repository
https://github.com/q-n-b/BackEnd

Backend service integrating ML recommendation and cloud infrastructure.

βš™οΈ Tech Stack

πŸš€ Key Contributions

βœ” Built backend server architecture
βœ” Designed AWS infrastructure
βœ” Integrated ML server API
βœ” Implemented internal API authentication


πŸ” CrackMe – Reverse Engineering Security Project

πŸ”— GitHub Repository
https://github.com/dahyeon1216/2025_2_system_security

Security project analyzing attack techniques and implementing defense logic.

βš™οΈ Tech Stack

πŸš€ Key Contributions

βœ” Reverse engineered authentication logic
βœ” Designed attack simulation programs
βœ” Implemented defense detection logic
βœ” Improved detection rate through behavior analysis


Pinned Loading

  1. reversing-core-principles-study reversing-core-principles-study Public

    γ€Œλ¦¬λ²„μ‹± 핡심원리」λ₯Ό 기반으둜 ν•œ 리버싱 ν•™μŠ΅ 기둝 및 μ‹€μŠ΅ μ €μž₯μ†Œ / Reverse engineering study based on Reversing Core Principles, including binary analysis, debugging notes, and hands-on labs

  2. SoluxteamMerge/30th_1_Merge_UniTrip_Backend SoluxteamMerge/30th_1_Merge_UniTrip_Backend Public

    Backend of UniTrip

    Java 1 1

  3. q-n-b/BackEnd q-n-b/BackEnd Public

    Spring Boot backend for a book Q&A service with JWT authentication and ML integration

    Java

  4. sm-solux/30th_2_solux_Actionary_back sm-solux/30th_2_solux_Actionary_back Public template

    λͺ¨λ“  갓생 μŠ΅κ΄€μ„ ν•œ 곳에 담은 μ˜¬μΈμ› 생산성 ν”Œλž«νΌ (BE)

    Java 2

  5. SMWU-2025-02-Network/2025-02-Network-Server SMWU-2025-02-Network/2025-02-Network-Server Public

    Team project repository for the 2025-2 Network Programming course (NetLibrary).

    Java

  6. smwu-aws-cloud-club/under_the_com smwu-aws-cloud-club/under_the_com Public

    컴퓨터 λ°‘λ°”λ‹₯의 λΉ„λ°€(μ €: λ£¨μƒ€μ˜€νŽ‘) μŠ€ν„°λ”” 기둝 λ ˆν¬μ§€ν† λ¦¬μž…λ‹ˆλ‹€ :)

    C 2