Staff Machine Learning Engineer, Personalization
Core
Build scalable offline and online ML platforms to support ranking, recommendation, and business decision-making for Coupang's search and discovery systems.
Role type
Staff Machine Learning Engineer (Search & Personalization)
Builds
Large-scale ML systems for search ranking, semantic retrieval, query understanding, and personalized product discovery.
Domain
E-commerce, Search & Recommendation
Deliverable
production ML models
Required skills
Python, Java, deep learning, statistical modeling, transformer-based models, contrastive learning, vector search, LLMs, embedding-based retrieval, multi-modal learning, Apache Spark, Airflow, Kubeflow, MLflow, TensorFlow, PyTorch, XGBoost, LightGBM
Preferred skills
Search systems, information retrieval, recommendation engines, cloud platforms (AWS, GCP), startup/high-growth environment experience, cross-functional team leadership
Technologies
Apache Spark, Airflow, Kubeflow, MLflow, TensorFlow, PyTorch, XGBoost, LightGBM, H2O.ai, Vertex AI, BigQuery, SageMaker
Responsibilities
Design and implement large-scale ML systems for search ranking and personalized product discovery; Build and optimize ML pipelines ensuring reproducibility and scalability; Define and track key performance metrics to evaluate model impact; Mentor engineering talent and foster a culture of technical excellence.
Seniority
Staff, hands-on IC with mentorship responsibilities