Staff Back-end Engineer [L6-1] (GenAI Creative)
Core
Design and build scalable backend systems and AI agent platforms for Coupang's global ad products, including GenAI video creative generation and automated algorithm improvement pipelines.
Role type
Staff Back-end Engineer (GenAI Creative & Multi-Agent Systems)
Builds
GenAI video creative systems, AIOps platforms, Ranking algo RSI systems, and AI Native SDLC automation tools.
Domain
E-commerce advertising, Generative AI, Large Language Models (LLMs), Multi-Agent Systems
Deliverable
production ML models
Required skills
Distributed system design, Java/Python, LLM architecture (MoE, attention mechanisms), LLM serving, Multi-Agent system architecture, RAG implementation, Agent frameworks (LangChain/LangGraph), High-concurrency backend architecture, System design patterns
Preferred skills
Self-harness implementation, Long-context memory, Planning and tool use, Paper-to-engineering translation
Technologies
Java, Python, LangChain, LangGraph, Deerflow, Claude Code, Hermes
Responsibilities
Lead architecture design and core development for Multi-Agent systems; Implement complex Agent/RAG systems from concept to production; Build high-availability backend services for GenAI video creative; Develop automated pipelines for algorithm improvement and hypothesis testing.
Seniority
Staff, hands-on IC with strategic impact
