(USA) Senior, Data Scientist

Walmart • Sunnyvale, CA

3d • $117,000 - $234,000 • Onsite

About The Position

The Senior Data Scientist leads the development of advanced machine learning solutions that power Search relevance, Personalization, and customer discovery experiences. This role independently drives complex modeling initiatives, partners across cross-functional teams, and delivers production-scale AI solutions that improve customer experience and business performance. The Applied AI Search & Personalization team develops scalable AI systems that transform how millions of customers discover products. We build intelligent retrieval, ranking, recommendation, and personalization models while leveraging Generative AI to create next-generation shopping experiences.

Requirements

• Strong experience building production machine learning systems.
• Expertise in supervised learning, deep learning, feature engineering, and model optimization.
• Strong Python, SQL, and distributed data processing experience.
• Familiarity with cloud-based ML platforms and MLOps.
• Experience designing experiments and interpreting business impact.
• Ability to independently lead complex technical initiatives.
• Bachelor’s degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology, or related field and 3 years' experience in an analytics related field.
• Master’s degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology, or related field and 1 years' experience in an analytics related field.
• 5 years' experience in an analytics or related field.

Nice To Haves

• Experience with Search, Recommendation Systems, Personalization, NLP, or Ranking is preferred.
• Data science, machine learning, optimization models, Master’s degree 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

• Design and deploy machine learning models for Search, Ranking, Recommendations, and Personalization.
• Apply deep learning, NLP, and Generative AI techniques to improve customer discovery.
• Lead experimentation using offline metrics and online A/B testing.
• Optimize model performance, scalability, and inference efficiency.
• Collaborate with Product Managers, Engineers, and Applied Scientists to define AI roadmaps.
• Mentor junior data scientists and contribute to engineering and modeling best practices.
• Drive production monitoring and continuous model improvements.
• Communicate technical recommendations to leadership and business stakeholders.

Benefits

• 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
• PPTO that can be used for vacation, sick leave, holidays, or other purposes
• Walmart-paid education benefit program (Live Better U) for full-time and part-time associates
• Tuition, books, and fees are completely paid for by Walmart

What This Job Offers

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