Full-Stack & Data Platform Engineer
Building scalable SaaS platforms, distributed cloud architectures, and high-performance data systems
📍 Korea
🌐 Portfolio: https://www.yeschan119.com
📫 Email: yeschan119@gmail.com
• Large-scale SaaS platforms
• Distributed cloud architectures (AWS / Azure)
• High-performance database & analytics systems
• End-to-end data platforms and reporting pipelines
Experience across the entire system lifecycle
Architecture → Development → Deployment → Production Optimization
Cloud-native analytics platform with embedded AWS QuickSight dashboards
Tech
Angular • .NET • AWS • MySQL
https://github.com/yeschan119/aws-bi-reporting-system
Migrated enterprise analytics pipeline from Azure to AWS distributed architecture
Tech
AWS (Lambda • Step Functions • SQS • EC2 • DynamoDB • S3 • RDS • QuickSight)
Azure (Event Hubs • Stream Analytics • Data Factory • Databricks • SQL Server)
https://github.com/yeschan119/Cloud-Data-Platform-Migration
Real-time reporting system supporting thousands of organizations
Tech
Angular • .NET • AWS • DynamoDB • MySQL
https://github.com/yeschan119/incident-management-system
Internal monitoring platform using OpenTelemetry
Tech
Angular • ASP.NET Core • OpenTelemetry • AWS
https://github.com/yeschan119/APM-Dashboard
More Projects
High-performance real-time chat system
Tech
Angular • .NET 8 • SignalR • AWS
https://github.com/yeschan119/real-time-messaging-service
large-scale Insurance Claim Lifecycle Tracking & Monitoring System built on top of the Stedi EDI platform.
Tech
Angular • .NET 8 • AWs(Lambda, EventBridge)
MySQL • DynamoDB
https://github.com/yeschan119/insurance-claim-tracking-system
Automated query optimization system for database performance tuning
Tech
C++ • Query Optimizer • Database Engine
https://github.com/yeschan119/SQL_Tuning_Advisor
Edge-based object detection pipeline
Tech
Python • YOLO • Computer Vision
Ko&Clo 2026.05 ~ Present
- Designed and automated apparel sales, inventory, ordering, settlement, and store operations as a unified apparel distribution management system
- Applied Software Architecture principles to the apparel company system, separating domain, API, data, and deployment layers
- Built an AI Agent-based environment that connects system queries, controls, and automation tasks so operators can control the software more directly
Tech
Fastapi • Python • Vue • Docker • Postgres • AWS
Kokomo Solutions Inc — Chicago 2024 – 2026.04
- Developed SaaS platforms and analytics dashboards
- Designed scalable REST APIs and backend systems
- Optimized production database queries and performance
Tech
Angular • .NET • MySQL • MSSQL • DynamoDB • AWS
TmaxData (Tibero DBMS Lab)
2022 – 2024
• Developed RDBMS query optimizer components
• Implemented statistics collection and SQL tuning features
• Delivered enterprise SQL performance optimization
Tech
C • C++ • Tibero • Oracle
AIWORKX
2021
• Built object detection pipelines
• Implemented segmentation and annotation systems
Tech
Python • Computer Vision
