Dohyeon Baik

- Developed kiosk user interfaces in React for on-site exhibition and conference operations - Built admin system with Next.js - Designed integration structures between event websites and APIs - Implemented a hybrid REST API + tRPC architecture to separate internal and external APIs with improved type safety - Managed AWS-based deployment and CI/CD for the admin and front-end environment

- Developed and operated backend services for an OTT and membership platform - Built AI-enabled features including RAG-based chatbot and AWS Personalize recommendation system - Improved platform payments by supporting PG migration, in-app payment flows - Added Elasticsearch-based search features and improved search quality - Introduced Datadong monitoring and logging/alert workflows

- Participated in an MVP project as an outsourced backend developer - Supported service features including messaging and recommendation-related functionality

- Worked on industrial control systems projects including smart logistics and airport facility systems