[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 through powerful insights that drive client decisions. They are seeking a Senior Data Scientist I to design and build new measurement products, develop statistical and machine learning models, and collaborate with various teams to deliver custom solutions using Nielsen datasets. Responsibilities • Design 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 right • Develop statistical and machine learning models that extend or adapt Nielsen methodologies to answer questions that standard products can't address • Write production-quality SQL, Python, and PySpark to extract, transform, and model data from Nielsen's cloud data environment • Build reusable data pipelines and ETL workflows that allow custom solutions to be delivered repeatably rather than rebuilt from scratch each time • Use AI tools actively — to validate models, accelerate pipeline development, stress-test logic, and compress the time between concept and delivery • Translate stakeholder requests into well-scoped analytical problems, push back when the ask is unclear, and deliver with clear documentation of methodology and assumptions • Collaborate with Research, Commercial Sales, and Client Insights teams; communicate complex model decisions in plain language Skills • 3+ 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 methodology • Proven ability to merge and reconcile multiple Nielsen data sources, navigating differences in sample design, universe estimates, and reporting conventions • Solid grasp of US media research fundamentals across Television, and Digital • Advanced degree in Statistics, Mathematics, Computer Science, Data Science, or a related quantitative field • 5+ years in data science or analytical research roles, with a track record of delivering production-grade models — not just analyses • Strong foundations in statistical modeling, sampling theory, weighting, and survey-based projections; comfortable with ML techniques where they fit • Expert-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 plus • Experience building and maintaining ETL pipelines using Airflow or equivalent orchestration tools • Familiarity with data warehousing concepts, cloud-native storage (Redshift, S3, or similar), and data engineering principles • Active 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 role • Experience designing agentic AI workflows for automation — chaining tools, validation steps, and outputs to reduce manual effort on repeatable tasks • Comfortable evaluating where AI outputs need verification versus where they can be trusted; understands the limits as well as the leverage • Ability to explain methodology decisions to non-technical stakeholders without oversimplifying the tradeoffs • Strong documentation habits — methods, data dictionaries, and assumptions written up so others can reproduce and build on your work • Proficiency in Tableau, Spotfire, or equivalent visualization tools for QA and client-facing output Benefits • Comprehensive health and wellness plans • A 401(k) with a Nielsen company match • A generous paid time off policy • Company-provided vehicle if applicable • Discretionary incentive/bonus eligibility if applicable • Bonuses • Equity • Other incentives Company Overview • Nielsen 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 Sponsorship • Nielsen 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. Apply To This Job