Backend Engineer specializing in Distributed Systems, Messaging Architecture, and Infrastructure Automation.

I focus on building reliable backend platforms and solving real-world performance and scalability problems.

• Backend Engineer @ SECUI (Samsung SDS Affiliate)
• Experienced in Spring Boot, Python (Flask), Redis, Celery, Elasticsearch
• Interested in Large Scale System Architecture and High-Performance Backend Systems

Tech Blog
https://velog.io/@msw0909/posts

Email
mhg10181018@gmail.com

Recently reinforced backend fundamentals with a focus on code quality, maintainability, and design principles.

• Explored what "pythonic code" means in practice (readability, simplicity, and consistency)
• Applied pythonic design principles to improve backend code readability and maintainability
• Applied SOLID principles in Java and Spring-based backend development
• Improved code structure through proper layering, dependency management, and interface-based design
• Focused on writing maintainable and scalable backend services rather than only implementing features

Recently expanded frontend capability using Vue ecosystem:

• Experienced with Vue 2 and Vue 3 architecture differences
• Build tool understanding:
  • Vite (Dev Server + Modern Build Pipeline)
  • Webpack (Legacy Enterprise Build Systems)
  • Rollup (Library / Plugin Bundling Optimization)

Able to understand and collaborate on full frontend build pipelines and performance optimization.

Experienced in applying Claude AI for development workflow automation.

• Designed and maintained Claude Skills for reusable development workflows
• Built Agent-based automation flows for coding and debugging tasks
• Authored CLAUDE.md to standardize AI collaboration context and improve response quality
• Applied AI-assisted development for code generation, debugging, and architecture design support

Focus area:

• AI-assisted Development Workflow
• Agent-based Coding Automation
• Prompt Engineering for Stable Output

Sejong University — Software Engineering
(2019.03 ~ 2025.02)

Samsung SSAFY 13th
(2025.01 ~ 2025.07)

Bluemax TAMS (Traffic Analysis & Management System)

Responsible for maintaining and improving backend microservices in a large-scale traffic analysis platform.

• Stabilized TAMS 2.8.x through QA validation and hotfix deployment
• Contributed to TAMS 2.9.0 architecture and feature improvements
• Maintained an internal backend framework built on Python Flask, Redis, MariaDB, Socket Communication, and Celery

• Designed and implemented Spring Boot backend architecture
• Built Redis-based phone authentication system
• Implemented JWT + Spring Security authentication architecture
• Improved DB performance using QueryDSL and JPQL optimization
• Built AWS EC2 + RDS infrastructure
• Implemented CI/CD pipelines using GitHub Actions

Platform for database schema visualization and automated synchronization.

• ERD Visualization Engine
• Schema Diff Detection
• Migration Script Auto Generation
• Spring Boot Starter based DB Metadata Sync
• Vue / Nuxt Workspace UI

• Migrated Redis Pub/Sub → Redis Streams architecture
• Implemented Consumer Group for message durability and reliability
• Designed asynchronous Elasticsearch indexing pipeline
• Implemented search APIs using Spring Data Elasticsearch

Flutter + Arduino + Firebase Realtime DB

• Implemented real-time sensor → cloud → mobile pipeline
• Production deployment and competition award-winning project

GitHub
https://github.com/Munhangyeol/Boombim_makerstar

• Built YouTube API + Selenium data collection APIs
• Optimized database query performance
• Improved CI/CD build speed by applying build cache strategy (50%+ improvement)

GitHub
https://github.com/ICT-Dev-Route/Dev-Route-BE

SMTP / IMAP + TLS Socket Communication

GitHub
https://github.com/SejongComputerNetwork8/webSocket

Spring Backend + Unreal Server Integration

Contributed to stability, dependency compatibility, and library upgrades.

CSL Format Test Fix (JabRef/jabref#13465)
Dependency Compatibility Fix (JabRef/jabref#13511)
okhttp Version Upgrade (JabRef/jabref#13521)

Repository
https://github.com/JabRef/jabref

• Korea Maker Star Contest — Awarded
• Sejong Startup Camp — Excellence Award
• Hanium ICT Mentoring — Selected Project
• Sejong Software Convergence Academic Festival — Grand Prize

• Engineer Information Processing (정보처리기사)
• SQL Developer (SQLD)

• Java, Spring Boot, JPA, QueryDSL
• Python, Flask, Celery

• AWS EC2, RDS
• Docker, GitHub Actions CI/CD
• Prometheus, Grafana

• Redis (Pub/Sub, Streams)
• Elasticsearch

• Distributed Systems Architecture
• Messaging Queue Internals
• Backend Performance Optimization
• Platform Engineering