Backend & Data Engineer focused on Java/Spring services, event-driven systems, and data pipelines.
- Backend engineer interested in building reliable service flows with clear boundaries between user requests, background jobs, and data pipelines.
- Served as Technical Coach at SSAFY (2024.12 - 2025.12), mentoring 40+ teams and 200+ developers on backend architecture, CI/CD, database design, and system troubleshooting.
- Open-source contributor to LINE Armeria and Apache SeaTunnel, with production-oriented changes merged through maintainer review.
| Project | Contribution | PR | Status |
|---|---|---|---|
| LINE Armeria | Added support for custom Athenz token headers while preserving existing authentication behavior. | #6604 | ✅ Merged |
| LINE Armeria | Added FlagsProvider-based default ClientFactory customization while keeping lifecycle behavior unchanged. |
#6671 | ✅ Merged |
| Apache SeaTunnel | Fixed Doris sink retry backoff and scheduler leak behavior during Doris BE failures. | #10772 | ✅ Merged |
| Apache SeaTunnel | Implemented a new MQTT Source connector for ingesting MQTT messages into SeaTunnel pipelines. | #10935 | ✅ Merged |
Technical Coach (실습 코치) | 2024.12 - 2025.12
- Mentored 40+ project teams on backend architecture, API design, database schema design, and code quality.
- Guided teams through issues in distributed systems, concurrency, CI/CD pipelines, and deployment workflows.
- Introduced practical development processes using Jira, GitHub Actions, Jenkins, and review-based iteration.
| Area | Stack |
|---|---|
| Backend | Java, Spring Boot, JPA, QueryDSL, FastAPI, Python |
| Data Flow | Kafka, Redis Streams, Spark, Hadoop HDFS |
| Search / AI | Elasticsearch, RAG, LangChain, Vector DB |
| Cloud / Infra | AWS EC2, AWS S3, Docker, Docker Compose |
| DevOps | GitHub Actions, Jenkins, CI/CD, REST Docs |
| Architecture | Event-driven Architecture, Microservices, Worker Pattern |
Java Track | 2024.01 - 2024.12
- Awards: Capstone Project 1st Place, Community Leadership Award
- Coursework: Algorithms, Java, Spring Backend Development
University in South Korea
- Profitlab Hackathon - Excellence Award
- Engineer Information Processing (정보처리기사)
- Samsung SW Competency Test - Level B (Top 2%)
- FastCampus Builderthon - Finalist