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Walmart

Principal Data Scientist

Walmart

. Lead the design and development of Walmart Connect's next-generation ads incrementality measurement platform .

Posted 9/16/2026full-timeSunnyvale • California • United StatesLead💰 $132,000 - $286,000 per yearWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in causal inference methodologies and incrementality measurement, with proficiency in Python and SQL for large-scale data analysis. Capable of leading complex projects, mentoring teams, and presenting technical findings to senior leadership.

Highest-signal resume keywords
Causal Inference ExpertiseIncrementality-Based OptimizationPython ProficiencySQL ProficiencyExperiment Design at Scale

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Causal InferenceIncrementality MeasurementData AnalysisRandomized Control TrialsUplift DNNRegression DiscontinuityPower AnalysisVariance ReductionBias CorrectionMachine Learning
Soft Skills
MentoringPresentation SkillsProblem-Solving
Tools & Technologies
SparkBigQuery
Industry Keywords
Ads Industry ExperienceQuantitative ResearchAnalytics

Tech Stack

Tools & technologies
BigQueryPythonSparkSQL

About the role

Key responsibilities & impact
  • Lead the design and development of Walmart Connect's next-generation ads incrementality measurement platform
  • Design and implement large-scale causal inference methodologies to measure true incremental advertising lift across campaigns, channels, and segments
  • Establish evaluation frameworks, exit criteria, and solution readiness standards for causal inference methodologies
  • Ground approaches in hypotheses and data validations
  • Author technical design documents and whitepapers
  • Present technical work to senior leadership
  • Define the science roadmap for incrementality and causal measurement
  • Prioritize high-leverage problems and make principled trade-offs
  • Develop event-grain incrementality models, including Uplift DNN, to power ads bidding optimization decisions
  • Partner with engineers on data pipelines and schemas meeting causal-measurement precision requirements at scale
  • Mentor senior and mid-level scientists
  • Serve as the team's go-to authority on complex measurement problems and carry solutions into production with engineering and product

Requirements

What you’ll need
  • Bachelor's degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field and 5 years' experience in an analytics related field; or Master's degree in these fields and 3 years' experience; or 7 years' experience in an analytics or related field
  • 5+ years in data science or quantitative research
  • Deep, specialized expertise in causal inference and/or incrementality-based optimization
  • Experience with randomized control trials, PIE model, instrumental variables, uplift DNN, regression discontinuity and related methods
  • Strong command of experiment design at scale, including power analysis, variance reduction, interference and spillover handling, and bias correction
  • Proficiency in Python and SQL for large-scale data analysis
  • Experience with distributed data platforms such as Spark or BigQuery, or equivalent
  • Strong statistical foundations and machine learning knowledge
  • Ads industry experience preferred
  • PhD in a related quantitative field strongly preferred

Benefits

Comp & perks
  • Performance-based bonus awards
  • Medical, vision and dental coverage
  • 401(k)
  • Stock purchase
  • Company-paid life insurance
  • PTO, including sick leave
  • Parental leave
  • Family care leave
  • Bereavement leave
  • Jury duty leave
  • Voting leave
  • Short-term and long-term disability
  • Company discounts
  • Military Leave Pay
  • Adoption and surrogacy expense reimbursement
  • PTO and/or PPTO for vacation, sick leave, holidays, or other purposes
  • Live Better U Walmart-paid education benefit program
  • Fully paid tuition, books, and fees for eligible education programs
  • English Language Learning and short-form certificate programs
  • Stock compensation may be included for certain positions