Senior Back-end Engineer (Operational Intelligence)
Core
Design and build agentic AI applications and high-performance backend infrastructure to automate catalog operations, ensuring data quality and operational efficiency for Coupang's e-commerce ecosystem.
Role type
Senior IC backend engineer (agentic AI & distributed systems)
Builds
Agentic AI applications, high-availability backend systems, and AI pipelines for catalog intelligence
Domain
E-commerce, Large-scale distributed systems, AI/LLM engineering
Deliverable
production ML models
Required skills
Backend system design and development, LLM-based application development, Large-scale distributed systems design, Real-time data pipeline construction, Technical trade-off decision-making, Cross-functional collaboration
Preferred skills
Multi-agent framework development, Vector database and streaming infrastructure experience, LLM evaluation and automated assessment infrastructure, High-traffic e-commerce domain experience, Microservice architecture and CI/CD setup
Technologies
Java, Kotlin, Python, Go, LangChain, LlamaIndex, AutoGen, LangGraph, CrewAI, Milvus, Pinecone, Qdrant, Kafka, EMR, S3, AWS
Responsibilities
Design and build agentic AI applications using LLMs and multi-agent systems; Design and operate high-availability backend systems for real-time/batch data processing; Build AI pipelines for catalog data extraction, classification, and anomaly detection; Integrate LLM orchestration frameworks with existing backend services; Monitor and optimize performance, latency, and costs for LLM inference and backend services; Collaborate with product managers, data scientists, and domain experts to define AI product requirements
Seniority
Senior, hands-on IC
