Senior Machine Learning Engineer
Core
Design, build, and productionalize machine learning and Generative AI capabilities for large-scale ecommerce applications, powering intelligent experiences for millions of buyers and sellers.
Role type
Senior IC machine learning engineer (foundation models & GenAI)
Builds
Production-grade AI systems including LLMs, retrieval-augmented generation, embeddings, multimodal models, ranking, and personalization for global ecommerce.
Domain
Ecommerce, Generative AI, Foundation Models
Deliverable
production ML models
Required skills
Machine learning, NLP, Large Language Models, neural architectures, embeddings, retrieval, ranking, multimodal modeling, reinforcement learning, preference learning, reward modeling, bandits, Python, PyTorch, TensorFlow, scalable data processing, distributed systems, cloud infrastructure, model-serving platforms
Preferred skills
None stated
Technologies
LLMs, PyTorch, TensorFlow
Responsibilities
Design and build ML/GenAI systems for ecommerce; optimize systems involving LLMs, RAG, embeddings, and multimodal models; develop learning systems using feedback signals (RL, preference optimization, reward modeling); partner with researchers to turn prototypes into production; build training, fine-tuning, evaluation, and deployment pipelines; improve model quality, latency, cost, and observability; integrate AI capabilities into platform experiences; apply software engineering practices for code quality and operational excellence.
Seniority
Senior, hands-on IC
