Role: Senior Data Scientist
Experience: 3 to 5 years.
About the role:
You'll work on the core ranking and retrieval systems behind search, optimizing how user queries map to the product catalog at scale.
What you'll do:
• Develop search ranking models (learning-to-rank, neural ranking, hybrid)
• Improve query understanding:
-Tokenization, normalization, semantic matching
- Embeddings (dual encoders, semantic search)
• Work with implicit feedback signals (click models, dwell time, conversions)
• Design and evaluate ranking metrics (NDCG, MAP, CTR, CVR)
• Run controlled experiments to improve relevance
Current challenges:
• Moving beyond lexical search → semantic retrieval
• Handling long-tail queries and ambiguous intent




• Balancing relevance vs business objectives Tech stack (indicative)
• Python, SQL • Elasticsearch / Open Search (or similar)
• ML frameworks (XGBoost, Light GBM, DL models)
What we're looking for
• Experience in search, ranking, or information retrieval
• Solid feature engineering and modeling skills
• Understanding of trade-offs between offline metrics and online impact
• Product intuition around search UX
Preferable experience in recommender systems or ranking problems

📌 Senior data scientist (Bengaluru)
🏢 Falabella India
📍 Bengaluru