Sr. Staff, Machine Learning Engineer (Ads Engineering)
Core
Architecting next-generation Agentic AI systems and optimizing ad delivery for Coupang's advertising platform to maximize advertiser ROI.
Role type
Senior Staff Machine Learning Engineer (Ads Engineering)
Builds
Multi-agent orchestration systems, autonomous reasoning pipelines, and reward-based reinforcement learning models for ad campaigns.
Domain
E-commerce / Digital Advertising / Generative AI
Deliverable
production ML models
Required skills
Large-scale production ML system design, Agentic AI (multi-agent orchestration, planning, autonomous reasoning), Python, Reinforcement Learning (RLHF, RLAIF), LLM fine-tuning and distillation, System architecture, Technical leadership, Cross-functional alignment
Preferred skills
Master's or Ph.D. in CS/Math, Large-scale digital advertising systems expertise, Post-training RL experience, LLM serving/inference infrastructure optimization, End-to-end model training pipelines, AI coding agents (Claude Code)
Technologies
LangGraph, ReAct, Python, LLMs, CI/CD
Responsibilities
Design and deploy large-scale Agentic AI systems with multi-agent orchestration and autonomous reasoning; Implement post-training reinforcement learning to optimize ad delivery; Lead LLM fine-tuning, distillation, and high-throughput inference infrastructure; Analyze massive ad datasets to improve performance metrics (CTR, CVR, tROAS); Define technical roadmaps and align global stakeholders via bilingual design docs; Champion engineering excellence and AI development workflows.
Seniority
Senior Staff, high-level IC with technical leadership
