Experience

Work history, education, and certifications.

Work Experience

IEG Co., Ltd.

Full-time

Designed and developed a NestJS-based monolithic backend grounded in Domain-Driven Design (DDD), implementing JWT authentication/authorization, DTO/Pipe validation, and global exception handling. Deployed and operated the service on AWS (EC2/ECS) with ALB and HTTPS, resolved CORS/network issues, and collaborated with frontend engineers to define API contracts and ensure reliable integration.

NestJS DDD JWT PostgreSQL Docker AWS GitHub Actions Cloudflare

Team Data 21

Intern

Developed a .NET Umbraco CMS–based website with custom content and backend functionality.

.NET Umbraco CMS

Education

Gyeongbuk Software Meister High School

Learned fundamental programming languages, data structures, and computer systems.

Seoul National University — Data Mining (K-MOOC)

Studied large-scale data mining algorithms such as PCY, Multistage Hash, Multihash, and Apriori, and gained hands-on project experience by developing a Market Basket Model based on market analysis.

Certifications

MongoDB

Building AI Agents with MongoDB

Designed and implemented AI agents with persistent memory using MongoDB, enabling multi-step task execution and tool invocation.

MongoDB

Building RAG Applications Using MongoDB

Built retrieval-augmented generation applications with stateful conversation management on top of MongoDB.