Backend engineer at Delivery Hero in Berlin, on the AdTech Display Ads Serving team. I work on the central ad serving platform shared across Delivery Hero brands: ad retrieval and audience targeting, bidding, event pipelines, and the observability around them.
Most of my current work lives in private repositories. The projects below are public.
Now Go · Kubernetes · gRPC · Protobuf · Elasticsearch · Redis / Valkey · Kafka · AWS · GCP · Terraform · Grafana Before Java · Spring Boot · Docker
LogBat · Distributed log collection platform · Aug 2024 Log-collection SDKs for Java and JavaScript, a lock-free multi-producer queue that lifted throughput by 25%, and multi-instance load testing on AWS Lambda. 1st place at Woowa Tech Camp Demo Day · Woowa Brothers engineering blog · demo
Git Challenge · Interactive Git practice platform · Nov–Dec 2023 A Docker-isolated container per user session and an HTTP-based remote terminal, cutting command response time from 950 ms to 180 ms. Selected as 1 of 4 teams out of 32 to present on site at NAVER Boostcamp · demo
B.S. Computer Engineering, Hansung University · 2019–2025, graduated early Woowa Tech Camp 7th, Backend · NAVER Boostcamp Web Backend 8th