About Perplexity
Perplexity
Perplexity serves tens of millions of users daily with reliable, high-quality answers grounded in an LLM-first search engine and specialized data sources. The Answer Quality team ensures that our prompts, tools, search, and specialized datasets, combined with both frontier and in-house models, create the best possible experience for our users. As a Data Scientist/Engineer on this team, you will derive online signals from user interactions to bridge the gap between changes in answer quality and observed user behavior.
Responsibilities
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Discover and validate online signals from user interactions that serve as reliable proxies for true answer quality
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Design and implement novel online metrics to be tracked both in A/B testing and on product health dashboards, ensuring alignment with ground-truth evaluations
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Analyze experimental results to validate these metrics, ensuring they accurately predict user satisfaction and drive product decisions
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Build and maintain the data pipelines that calculate these metrics at scale, delivering actionable quality signals to Search, Product, and model training teams
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Communicate findings and bring clarity through close collaboration with Product and Search teams
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Operate in a small, high-impact team where your work directly shapes how Perplexity measures and improves Answer Quality
Qualifications
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MS in a technical field or equivalent experience
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4+ years of experience working as a Data Scientist, Analytics Engineer, or related role
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Experience working on search, recommendation, or LLM-based products, with an emphasis on designing online metrics and analyzing A/B experiments
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Strong proficiency in Python and SQL (expected to write production-grade code)
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Deep knowledge of statistical analysis
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Experience with Business Intelligence (BI) tools for visualization and reporting
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Comfortable with agentic coding workflows and using AI-assisted development tools to iterate faster
Preferred Qualifications
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Proficiency with Apache Spark and Databricks
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Experience with the development or validation of LLM-as-a-judge systems
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Prior work supporting customer-facing products at scale
To apply for this job please visit jobs.ashbyhq.com.
About this role & career path
Working in New York City, New York
New York, often called New York City (NYC), is the most populous city in the United States. It is located at the southern tip of New York State on New York Harbor, one of the world's largest natural harbors. The city comprises five boroughs—Manhattan, Brooklyn, Queens, the Bronx, and Staten Island; each is coextensive with its respective county. It is the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the United States by both population and urban area. New York is a global center of finance and commerc
What people say about Perplexity
- Paul Graham On Two Kinds of Programmers and Painters
- It's all fun and games until someone [XOFF]
- The Unreasonable Effectiveness of Recurrent Neural Networks
- Where's the Generic Insulin?
Recent news
- Perplexity Launches Brain, a Self-Improving Memory System That Builds a Context Graph of an Agent's Work and Learns Overnight - MarkTechPost
- AI Agents and the CFAA: Amazon.Com Services v. Perplexity AI - Reason Magazine
- CNN sues Perplexity over alleged AI copyright theft - CNN
- Perplexity CEO's secret to success is ‘sleeping with that fear’ your competitor will steal your idea - Fortune
- Perplexity CEO tells CNBC one metric will determine who wins the AI race - CNBC
Aggregated from public discussions and news; opinions are the authors’ own.
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