Riiid
Auth Server & Gateway Redevelopment
Designed JWT-based authentication and gateway entry flows around safer service boundaries and clearer traffic routing.
Kotlin
Spring
JWT
Gateway
Backend engineer focused on Kotlin, Spring, system architecture, and AI service pipelines.
CV
Career history with emphasis on system architecture, high-performance infrastructure, and AI service pipelines.
Career History
Architecture Impact
Riiid
Learning Hub & TOEFL AI Features
Integrated OpenAI-backed learning services with backend flows for recommendation delivery, prompt orchestration, and release readiness.
OpenAI
AI Pipeline
Backend Integration
CJ CheilJedang
Computational Biology Platform
Reduced search latency from roughly 20 seconds to under 1 second and improved integrated lookup performance with Redis caching.
Elasticsearch
Redis
Performance
Monitoring
Hanghae Plus
Concert Reservation Architecture
Applied clean architecture, TDD, Redis distributed locking, and Kafka event flows to a traffic-heavy reservation domain.
Clean Architecture
TDD
Redis
Kafka
Personal Infrastructure
Personal OCI/k3s Platform
Operates public personal services through OCI, container automation, k3s orchestration, and deployment scripts.
OCI
k3s
Docker
Terraform
SolidIT
OpenGL 3D Interface Recovery
Improved rendering performance from near-unusable frame rates to a stable interactive range for 3D platform workflows.
OpenGL
Performance
Web Platform
Core Stack
Kotlin
Java
Spring Boot
Python
FastAPI
Redis
Kafka
RabbitMQ
PostgreSQL
MySQL
Docker
KubernetesTerraform
OCI
RAG Pipelines
