Staff, Data Scientist - Health & Wellness - Consumer Health & Data Solutions

Walmart • Sunnyvale, CA

1d • Onsite

About The Position

Join Walmart’s Consumer Health & Data Solutions team to build data science products that help customers eat healthier and make more informed wellness choices. As a Staff Data Scientist, you’ll develop recommendation systems, behavioral “signals” models, and health-focused chatbot capabilities—taking work from data sourcing and experimentation through evaluation and production partnership. You’ll collaborate closely with product and data engineering while owning model quality, insights, and measurable impact.

Requirements

• Ph.D. or master’s degree in computer science, statistics, mathematics, data science, or a related field.
• Strong applied ML background, including deep learning and embeddings; GenAI experience is a plus.
• Experience with recommendation and/or search-style problems beyond collaborative filtering-only approaches.
• Proficiency in Python and SQL with large-scale data (e.g., BigQuery).
• Demonstrated skill in model testing/tuning/validation and production-minded measurement.
• Bachelors degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field and 4 years' experience in an analytics related field.
• Masters degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field and 2 years' experience in an analytics related field.
• 6 years' experience in an analytics or related field

Nice To Haves

• Experience with bias analysis, fairness metrics, and model explainability techniques.
• Experience with time-series or other temporal modeling.
• Experience building personalization systems for recommendations and/or search.
• Experience with generative AI methods and/or recommendation + generative approaches.
• Experience with big data and orchestration tools (e.g., Spark, Airflow, BigQuery).
• Familiarity with health and wellness products, services, or research environments.
• Experience in retail, eCommerce, and/or omnichannel domains.
• Knowledge of privacy and compliance considerations for health-related data (e.g., HIPAA concepts).
• Experience working in an Agile environment.
• Data science, machine learning, optimization models, PhD in Machine Learning, Computer Science, Information Technology, Operations Research, Statistics, Applied Mathematics, Econometrics
• Successful completion of one or more assessments in Python, Spark, Scala, or R
• Using open source frameworks (for example, scikit learn, tensorflow, torch)
• We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly.
• The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.

Responsibilities

• Build and improve ML systems for recommendations, behavioral signals, and nutrition-focused chatbot experiences.
• Lead the design and implementation of predictive models, recommender systems, customer segmentation and other advanced analytics projects.
• Develop and execute data-driven solutions for various initiatives, such as personalized product and content recommendations, health coaching, customer segmentation in the consumer health space, and product assortment in retail space.
• Experience creating, finetuning and validating boosted tree-based models, for balanced as well as imbalanced problems.
• Collaborate with cross-functional teams to integrate data insights into product development, educational and outreach campaigns, and operational processes.
• Identify fit-for-purpose data sources, run initial data quality checks, and translate product questions into modeling approaches.
• Evaluate and tune models using appropriate metrics (e.g., ROC, RMSE) and robust validation practices.
• Partner with data engineering to deploy, scale, and monitor models in production.
• Communicate results through clear visualizations and stakeholder-ready narratives.

Benefits

• competitive pay
• performance-based bonus awards
• medical coverage
• vision coverage
• dental coverage
• 401(k)
• stock purchase
• company-paid life insurance
• PTO (including sick leave)
• parental leave
• family care leave
• bereavement
• jury duty
• voting
• short-term disability
• long-term disability
• company discounts
• Military Leave Pay
• adoption and surrogacy expense reimbursement
• PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes
• Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities. Programs range from high school completion to bachelor's degrees, including English Language Learning and short-form certificates. Tuition, books, and fees are completely paid for by Walmart.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior