Project Portfolio

Architecture design for OAuth 2.0-based microservices authentication/authorization system. Built an authentication framework enabling dozens of microservices to communicate securely and efficiently.

Nike legacy application modernization project. Performance improvements through Spring 4.2 (10 years old) → Spring Boot 3.5, Java 8 → Java 21 upgrade along with comprehensive quality and security enhancements including vulnerability scanning, image scanning, code coverage, and bug detection.

Modified global payment system for Korean environment and developed microservices to integrate with Korean payment vendors like KakaoPay, NaverPay, and domestic PG companies. Added Korea-specific features and introduced Stored Payments domestically.

Developed high-volume traffic processing system for Nike Korea official online store on GS SHOP Breeze Platform. Built a system that stably processes massive traffic during limited edition sneaker releases and manages complex transactions linking orders, inventory, and payments in real-time.

Fully automated CI/CD pipeline and DevOps platform construction for Nike environment. Development-operations process modernization and productivity enhancement through Git trigger-based automated builds, multi-environment deployment, zero-downtime deployment, and real-time Slack notifications.

Complete CloudMOA system architecture design. A solution for integrated monitoring and management of Kubernetes clusters in multi-cloud environments, introducing leading architecture in the K8s monitoring field.

Flamingo big data solution architecture design and AI integration development. An intelligent platform providing real-time monitoring of the entire Hadoop ecosystem, AI-based anomaly detection, and workflow management. An innovative AI monitoring system from 2016 that automatically detects abnormal logs and metrics by integrating with machine learning models.

Financial legal workflow automation platform through IBK (Industrial Bank of Korea) electronic approval system and court system integration. Implemented digital transformation of the entire process including Java legacy modernization (6→8), Spring Batch-based large-scale electronic document migration, automatic interest calculation, HWP document auto-generation, and court document delivery.

Complete architecture design and development of enterprise groupware platform. Provides flexible collaborative environments tailored to each organization's requirements through generative bulletin board systems, dynamic menu management, and user-customized portlet dashboards. Pioneered implementation of current Low-Code/No-Code platform concepts.