Project

Selected work and personal projects.

Work

NestJS DDD Backend Platform

IEG Co., Ltd.

Monolithic backend built with NestJS and Domain-Driven Design, featuring JWT auth, DTO/Pipe validation, and global exception handling. Deployed on AWS EC2/ECS behind an ALB with HTTPS, with CORS and network issues resolved in collaboration with frontend engineers.

NestJS DDD PostgreSQL Docker AWS GitHub Actions Cloudflare
Personal

MongoDB AI Agent & RAG Application

Building AI Agents / RAG Applications with MongoDB

Designed and implemented AI agents with persistent memory using MongoDB, supporting multi-step task execution, tool invocation, and stateful conversation management for retrieval-augmented generation.

MongoDB RAG AI Agents
Club

DUCAMi × ADA

Intercollegiate IT Technology Club

Built a map-based web page using the Kakao Map API as part of a collaboration between the ADA club and DUCAMi, later showcased with Microsoft and presented at Apple Developer Academy Showcase 2024.

Kakao Map API Web
School

GBSW Capstone Project

1st Place, GBSW Capstone Project (2024)

Award-winning capstone project at Gyeongbuk Software Meister High School, built and presented as a team over the course of the program.

Capstone Team Project