# Member of Technical Staff

**Company:** [Perplexity](https://hotfix.jobs/companies/perplexity)
**Location:** Belgrade, Serbia, London, United Kingdom, Berlin, Germany
**Role:** Data Science
**Experience:** 4+ years
**Skills:** Python, SQL, A/B Testing, Statistics, Search Quality, Business Intelligence, Spark, Databricks, Llm-As-A-Judge
**Posted:** 2026-08-05

> The Product Data Scientist will analyze user behavior and A/B experiments to improve search quality, develop product metrics and dashboards, and build data-labeling pipelines. The role requires 4+ years of relevant experience, strong Python and SQL skills, and deep statistical knowledge.

## Job Description

## Responsibilities
- Develop data-driven insights from user behavior to inform the product roadmap and accelerate adoption.
- Formulate hypotheses and validate them by designing, running, and analyzing A/B tests.
- Determine appropriate metrics and visualizations for tracking, and implement them in dashboards.
- Design new pipelines to improve ranking quality, including discovering new signals, producing metrics, and creating data-labeling pipelines with human and large language model feedback.

## Requirements
- 4+ years of experience working as a data analyst or in a related role.
- Experience working on search-related products, with emphasis on designing online metrics and analyzing A/B experiments.
- Strong Python skills, including the ability to write production-grade code.
- Proficiency with SQL.
- Experience with business intelligence tools.
- Deep knowledge of statistics.

## Nice-to-haves
- Proficiency with Apache Spark.
- Experience with Databricks.
- Experience developing LLM-as-a-judge systems.

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**Canonical:** https://hotfix.jobs/jobs/3b92b9b0-9ecf-47cf-bb15-b43bed77f792