Machine Learning Scientist II (Search)

Job description

**Who we are :** Wayfair is moving the world so that anyone can live in a home they love – a journey enabled by more than 3,000 Wayfair engineers and a data-centric culture. The Customer Technology(CT) team builds and owns all the Machine learning (ML) products that power all search, marketing, and recommendations technology across Wayfair. Our algorithms tackle a varied & broad spectrum of challenges in the Wayfair marketplace; from empowering suppliers to easily add products to our catalog, to enabling our customers to discover and purchase a vast & diverse assortment of home goods, to driving marketing experiences customers love all at web scale. We are looking for machine-learning scientists for research and development of the ML systems that power our real-time **Search Typeahead, Search Guidance, Query Understanding & Interpretation, Query Refinement and Recommendations, and emerging GenAI-powered search capabilities** . In this role, you’ll partner with fellow scientists, engineers, analysts, and product managers to apply science and machine learning skills to directly impact Wayfair’s revenue. **What you’ll do :** - Design, build, deploy and refine large-scale machine learning models and algorithmic decision-making systems that solve real-world problems for customers - Work cross-functionally with commercial stakeholders to understand business problems or opportunities and develop appropriately scoped analytical solutions - Collaborate closely with various engineering, infrastructure, and ML platform teams to ensure adoption of best-practices in how we build and deploy scalable ML services - Identify new opportunities and insights from the data (where can the models be improved? what is the projected ROI of a proposed modification?) - Be obsessed with the customer and maintain a customer-centric lens in how we frame, approach, and ultimately solve every problem we work on. **We Are a Match Because You Have:** - 3+ years of industry experience with a Bachelor/ Master’s degree or minimum of 1-2 years of industry experience with PhD in Computer Science, Mathematics, Statistics, or related field. - Strong theoretical understanding of statistical models such as regression, clustering and ML algorithms such as decision trees, neural networks, etc. - Solid understanding of algorithms for search retrieval, ranking, relevance, query understanding, NLP, or recommender systems. - Good proficiency in the Python ML ecosystem (pandas, NumPy, scikit-learn, XGBoost, etc.). - Solid hands-on expertise deploying machine learning solutions into production - Strong written and verbal communication skills. - Intellectual curiosity and enthusiasm about continuous learning. **Nice to have :** - Experience in e-commerce, or online search systems. - Knowledge of modern NLP techniques (transformers, embeddings, semantic search). - Experience applying Generative AI / LLMs (e.g., GPT, LLaMA) to real-world problems such as search, personalization, or content generation. - Experience with deep learning frameworks like PyTorch. - Familiarity with vector databases, information retrieval frameworks (e.g., Elasticsearch, Vespa) - Familiarity with GCP (or AWS, Azure), ML model development frameworks, ML orchestration tools (Airflow, Kubeflow or MLFlow) - Experience with Apache Spark Ecosystem (Spark SQL, MLlib/Spark ML).