Walmart

Staff Data Scientist – Sponsored Media Mix Modeling, Experimentation

Walmart

full-time

Posted on:

Location Type: Office

Location: BentonvilleCaliforniaUnited States

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Salary

💰 $110,000 - $220,000 per year

Job Level

About the role

  • Build and scale advertiser-ready Media Mix Models (MMM)
  • Design, productize, and deploy granular Sponsored Product Ads MMM solutions that advertisers actively use for budget planning, scenario simulation, and optimization
  • Establish MMM as a core FY27 Joint Business Plan (JBP) measurement capability with strong adoption and credibility
  • Advance incrementality and causal measurement for Sponsored Ads
  • Lead the design and analysis of A/B tests and quasi-experimental frameworks to quantify true incremental lift from media investments
  • Move the organization beyond pre/post reporting toward trusted, decision-grade measurement that informs product launches and advertiser strategy
  • Develop machine learning models that improve advertiser growth and member experience
  • Build advertiser-level segmentation and retention models that drive supplier growth, along with member-level ad response prediction models that optimize performance while protecting the member experience
  • Own experimentation strategy for new ad products and formats
  • Partner with Product, Engineering, and Ads teams to design rigorous experiments for SPA product launches, interpret results, and translate findings into clear recommendations that influence roadmap and go-to-market decisions
  • Productize data science solutions at scale
  • Deliver production-grade modeling systems with robust pipelines, monitoring, and retraining
  • Apply AI-driven approaches to automate workflows, accelerate insights, and ensure measurement solutions are scalable, testable, and repeatable
  • Act as a technical thought partner across MAP
  • Lead cross-functional discussions on measurement and modeling tradeoffs, educate stakeholders, and provide clear, actionable guidance that balances analytical rigor with business impact

Requirements

  • A master’s degree or higher in Computer Science, Machine Learning, Statistics, Mathematics, Operations Research, or a related quantitative field, plus 5+ years of industry experience applying advanced analytics and machine learning to real-world business problems
  • A proven track record of building and scaling production-grade data science systems, including model training pipelines, evaluation, monitoring, and retraining for decision-critical use cases
  • Deep hands-on experience with Media Mix Modeling (MMM) for budget planning and optimization, including saturation curves, diminishing returns, marginal ROAS, and Bayesian or frequentist approaches
  • Strong expertise in causal inference and experimentation, including A/B testing, power analysis, difference-in-differences, matched or synthetic controls, and Bayesian time series methods
  • Solid grounding in machine learning and statistical modeling, including advertiser segmentation, ad response prediction, uplift modeling, and bias–variance tradeoffs
  • High proficiency in Python and SQL, with experience working in large-scale data environments (e.g., BigQuery, Dataproc), distributed data processing, and feature pipeline development
  • Experience with TensorFlow or similar frameworks is preferred
  • Familiarity with modern analytics and measurement tooling, such as Google Meridian or similar MMM platforms, and GenAI / LLM-based tools for automation and scalable insight generation
  • A strong analytical mindset, comfort operating in ambiguity, and a collaborative, impact-driven approach to partnering with Product, Engineering, and Advertising teams
Benefits
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Applicant Tracking System Keywords

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Hard Skills & Tools
Media Mix Modelingmachine learningA/B testingcausal inferencestatistical modelingadvertiser segmentationad response predictionPythonSQLBayesian methods
Soft Skills
analytical mindsetcollaborativeimpact-drivencomfort operating in ambiguityclear communicationtechnical thought partnercross-functional leadershipeducational guidanceactionable recommendationsdecision-making