[Remote] Senior Data Scientist I

Note: The job is a remote job and is open to candidates in USA. Nielsen is dedicated to powering a better media future by providing insights that drive client decisions. The Senior Data Scientist I will design and build new measurement products, develop statistical and machine learning models, and collaborate with various teams to translate stakeholder requests into analytical solutions.ResponsibilitiesDesign and build new measurement products by combining Nielsen datasets across National and Local linear TV, Streaming, Audio, and Digital — understanding the weighting rules, projection logic, and methodology differences that make cross-dataset work hard to get rightDevelop statistical and machine learning models that extend or adapt Nielsen methodologies to answer questions that standard products can't addressWrite production-quality SQL, Python, and PySpark to extract, transform, and model data from Nielsen's cloud data environmentBuild reusable data pipelines and ETL workflows that allow custom solutions to be delivered repeatably rather than rebuilt from scratch each timeUse AI tools actively — to validate models, accelerate pipeline development, stress-test logic, and compress the time between concept and deliveryTranslate stakeholder requests into well-scoped analytical problems, push back when the ask is unclear, and deliver with clear documentation of methodology and assumptionsCollaborate with Research, Commercial Sales, and Client Insights teams; communicate complex model decisions in plain languageSkills3+ years working directly with Nielsen datasets (TAM, DAR/N1Ads, DCR, Audio, or similar) with hands-on knowledge of Nielsen's weighting, projection, and audience estimation methodologyProven ability to merge and reconcile multiple Nielsen data sources, navigating differences in sample design, universe estimates, and reporting conventionsSolid grasp of US media research fundamentals across Television, and DigitalAdvanced degree in Statistics, Mathematics, Computer Science, Data Science, or a related quantitative field5+ years in data science or analytical research roles, with a track record of delivering production-grade models — not just analysesStrong foundations in statistical modeling, sampling theory, weighting, and survey-based projections; comfortable with ML techniques where they fitExpert-level Python and SQL; strong PySpark for big data work in cloud environments (AWS preferred)Experience with Databricks for large-scale data processing and ML workflows; familiarity with warehouse-native ML (Databricks ML, Snowflake, or BigQuery ML) is a plusExperience building and maintaining ETL pipelines using Airflow or equivalent orchestration toolsFamiliarity with data warehousing concepts, cloud-native storage (Redshift, S3, or similar), and data engineering principlesActive daily use of AI tools (LLMs, copilot-style assistants) for code generation, model validation, documentation, and workflow acceleration — this is a core expectation of the roleExperience designing agentic AI workflows for automation — chaining tools, validation steps, and outputs to reduce manual effort on repeatable tasksComfortable evaluating where AI outputs need verification versus where they can be trusted; understands the limits as well as the leverageAbility to explain methodology decisions to non-technical stakeholders without oversimplifying the tradeoffsStrong documentation habits — methods, data dictionaries, and assumptions written up so others can reproduce and build on your workProficiency in Tableau, Spotfire, or equivalent visualization tools for QA and client-facing outputBenefitsComprehensive health and wellness plansA 401(k) with a Nielsen company matchA generous paid time off policyAdditional benefits may include a company-provided vehicle and/or discretionary incentive/bonus eligibilityBonuses, equity, or other incentivesCompany OverviewNielsen provides a comprehensive understanding of what consumers watch and buy. It was founded in 1963, and is headquartered in New York, New York, USA, with a workforce of 10001+ employees. Its website is https://www.nielsen.com.Company H1B SponsorshipNielsen has a track record of offering H1B sponsorships, with 5 in 2026, 20 in 2025, 36 in 2024, 74 in 2023, 147 in 2022, 98 in 2021, 144 in 2020. Please note that this does not guarantee sponsorship for this specific role.