Backend Engineer
who builds, improves
& automates.
Focused on MSA architecture, AI/DX platform integration, and legacy system improvement.
About
I build B2B back-office and platform systems with Java/Kotlin on Spring Boot. Interested in MSA and DDD-based design, I work on domain-centric architecture improvements with experience in GPU-based LLM serving and AI dev environment setup.
I aim for architecture-first thinking over simple implementation, improving both developer productivity and system structure from an AX(AI Experience) + DX(Developer Experience) perspective.
Stack
Backend
- ● Java / Kotlin
- ● Spring Boot (Web, WebFlux, Security)
- ● JPA · QueryDSL
Architecture
- ● MSA · DDD
- ● API Gateway · BFF
- ● Keycloak
Infra
- ● Docker · Nginx
- ● PostgreSQL · MySQL
- ● Prometheus · Grafana
AI / LLM
- ● vLLM 모델 서빙
- ● OpenAI-compatible API
Experience
B2B Platform & Back-office Systems
Merchant onboarding, e-contracts, KYC/review process design · Biz Space domain modeling · External API integration
MSA Architecture Design & Improvement
Multi-module structure · Gateway routing/auth (Keycloak) · DB separation strategy · Shared module extraction
AI/DX Developer Productivity
GPU vLLM server setup · OpenAI-compatible internal service · QA Automation Agent · IDE AI integration
Legacy System Improvement & Refactoring
Structural refactoring · Logging/service flow improvements · Incremental modernization
Projects
Internal LLM server with OpenAI-compatible API for developer productivity
Automated code generation from QA requests with Git integration
Performance review system with RBAC and data visualization
AI English vocabulary learning app for Toss
Writing