Tech lead experience in a product ML team driving research and technical direction Experience with ads retrieval modeling, ranking or recommendation systems Experience with deep learning models for retrieval (two tower, GNNs, transformers, LLMs) 8+ years of end-to-end experience of training, evaluating, testing, and deploying machine learning models 5+ years of experience building machine learning models with Tensorflow/Pytorch Experience with large scale data processing & pipeline orchestration tools like Spark, Dataflow, Kubeflow, Airflow, BigQuery Experience working with nearest-neighbor search systems is a big plus Experience working with cross functional stakeholders to productize ML research Experience with deep learning, representation learning or transfer learning is preferred Tech lead experience in a product team is strongly preferred