- Core backend data serving layer
- Delegates product/order/member/benefit/eats data from DB layer to Front API layer including cache refresh pipelines.
- Handle most of Coupang user traffics as a data intermediator
- Elasticsearch expert
- Develop ES based search system layer.
- Maintain all ES clusters including indexing pipelines, recovery jobs and system optimizations.
- ETL processing
- Develop and maintain data processing system with Spark, Hive and Kafka on Airflow.
- Built data pipeline of products from feeding to processing for expose to search engine in NAVER shopping platform.
- Experienced in build data pipeline of feeding massive data, processing and delivering.
- Skilled in building and operating Elastic Stack for massive indexing, real time searching and visualization.
- Familiar with Hadoop Ecosystem based ETL processing.
- Adepted in running and deploying applications on container system.
- English: Sungjun_Lee_resume.pdf
- Korean: 이력서.pdf
- Build monitioring system using Elastic Stack + Lambda
- Written on D2 (Naver tech blog)
- Configure Kubernetes pods autoscaling by detecting Kafka comsumer lag
- Presented in NAVER Engineering Day 2019
- 2021 Elastic Bronze Contributor
- 2022 Elastic Gold Contributor
- 2023 Elastic Silver Contributor
