Principal Data Analyst, Information Retrieval

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 ...