Kosin

Boarding house search platform built on OpenStreetMap data.

Overview

Kosin is a full-stack web platform for discovering boarding houses (kos-kosan). It pulls boarding house data from OpenStreetMap via the Overpass API, stores it in PostgreSQL, and presents it through an interactive dashboard with a live map — making the search for a place to stay data-driven and visual.

Role

Full-Stack Developer

Key Contributions

• Built interactive map dashboard with Vue
• Implemented Overpass API data ingestion from OpenStreetMap
• Designed PostgreSQL schema for geospatial data
• Developed backend data processing pipelines with Python

Impact

Tech Stack