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Research Scientist
NYC (NY), San Francisco (CA) or Paris (FR) · Full-time · Posted Nov 6, 2025
- Experience
- 5 years minimum.
- Education
- MS required; PhD preferred.
About the job
Leads research and builds retrieval, ranking, and modeling systems that provide factual search and multimodal understanding for AI agents.
What you'll do
- Design, implement, and evaluate retrieval and ranking systems and models.
- Build research pipelines and run experiments from development through deployment and iteration.
- Drive research roadmaps, modeling and evaluation decisions, and cross-functional initiatives.
What they ask for
- At least 5 years of experience in research in information retrieval, computer science, or machine learning.
- MS degree required; PhD preferred.
- Hands-on experience with LLMs, NLP, embeddings, or information retrieval systems.
- Familiarity with HNSW and ANNs.
Nice to have
- PhD.
Tools
Node.js, NestJS, Python, Java, PostgreSQL, OpenSearch, Vespa, Apache Storm
AI focus
Develops retrieval and ranking systems, factual search and multimodal models, and a reinforcement-learning framework for incorporating AI preferences into ranking.
Model-written summary · the original posting is authoritative