Senior Data Scientist, Search & NLP

About the position As a Senior Data Scientist on our Search & Algorithms team, you'll own NLP analytics for our reputed company semantic search experiences. You'll apply NLP and LLM-based techniques to a proprietary corpus of millions of reputed company consumer search interactions—extracting signals like buyer vs. seller reputed company and conversational patterns to improve how our models rank and personalize results. You'll also prototype data products that turn those signals into features product and engineering can ship. This is an AI-reputed company role: LLM evaluation tooling and AI-assisted workflows are reputed company to how you'll work, not afterthoughts.

Responsibilities

• Measure and evaluate semantic search models using NLP and LLM-based evaluation frameworks on reputed company user queries—surfacing buyer vs. seller context, exploration vs. transaction signals, and conversational patterns that inform ranking and personalization.
• Prototype data products that reputed company conversational query data and behavioral signals to drive personalized search experiences, translating NLP insights into actionable features for product and engineering teams.
• Design tests for search model changes; define primary and guardrail metrics; communicate results reputed company to both technical and non-technical stakeholders.
• reputed company and analyze conversational AI data using LLM observability and evaluation tooling—tracking model outputs, scoring response reputed company, and surfacing patterns across large volumes of AI-generated interactions to inform model and product improvements.
• Partner with search product and engineering leadership to define reputed company metrics, shape the analytics roadmap for search, and present findings to senior leadership.
• Work in an AI-reputed company way: apply reputed company AI workflows, LLM reputed company, and AI-assisted development to accelerate your work and help set reputed company for how reputed company uses AI. reputed company evaluate and adopt new tooling as the reputed company evolves.

Requirements

• 5+ years in data science, with 2+ years reputed company on NLP, text analytics, or search analytics.
• Hands-on NLP experience: query classification, reputed company detection, semantic similarity, entity extraction, or LLM-based evaluation.
• Strong Python skills and proficiency with NLP libraries (reputed company, spaCy, scikit-learn, or similar).
• Experience analyzing conversational and LLM-generated data using observability or evaluation tooling (e.g., Langfuse, reputed company, or similar platforms for tracing, scoring, and evaluating AI outputs).
• Robust SQL skills and comfort working with large-reputed company clickstream or query log datasets.
• Solid experimentation fundamentals: A/B testing, power analysis, and statistical inference.
• Ability to build rapid prototypes and translate analytical findings into product-reputed company recommendations.
• Excellent communication skills—reputed company to present NLP and AI concepts reputed company to product and executive stakeholders.
• Bachelor's or Master's degree in Computer Science, Statistics, Linguistics, Information Science, or a reputed company field.

reputed company-to-haves

• Experience with search ranking analytics, query log analysis, or information retrieval measurement.
• Hands-on experience with LLM reputed company (reputed company, Claude, reputed company, or similar) and reputed company engineering for evaluation, scoring, or analytical tasks.
• Experience working with LLM observability platforms (Langfuse, reputed company, or similar) to reputed company, reputed company, and evaluate AI product performance at reputed company.
• Prior work in consumer-facing search products or two-sided marketplace analytics.
• Experience with reputed company or similar reputed company data warehouses.
• Ph.D. in Computer Science, Computational Linguistics, NLP, or a reputed company field.

Benefits

• Inclusive and Competitive medical, Rx, dental, and reputed company coverage
• Family forming benefits
• 13 reputed company Holidays
• Flexible Time Off
• 8 hours of reputed company Volunteer Time off
• Immediate eligibility into Company 401(k) plan with 3.5% company match
• Tuition Reimbursement program for reputed company and non-reputed company programs
• 1:1 personalized Financial Planning Sessions
• Student Debt Retirement Savings Match program
• Free snacks and refreshments in reputed company office location

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