Senior Back-end Engineer (Eats Ads Engineering)
Core
Designing, building, and operating end-to-end backend systems for Coupang's Ads platform, covering the full lifecycle from serving and indexing to ranking, mixing, inference, tracking, charging, and attribution.
Role type
Senior IC back-end engineer (ads platform)
Builds
Scalable, high-performance advertising systems and advertiser platforms
Domain
E-commerce, advertising technology, large-scale distributed systems
Deliverable
production ML models | product features
Required skills
Java, algorithm design, system design, large-scale distributed systems, performance optimization, scalability, trade-off analysis, ownership, rapid prototyping
Preferred skills
Ads/Recommendation/Search systems, CTR/CVR metrics, Harness engineering, AWS (S3, Kafka, EMR), ML system collaboration
Responsibilities
Develop features linking ranking/recommendation/search algorithms to ad serving; build and improve advertiser platforms; optimize system performance and scalability for high traffic; collaborate with data scientists and PMs on data-driven decisions; utilize A/B testing and user behavior analysis to improve ad quality and revenue.
Seniority
Senior, hands-on IC
