(USA) Staff, Data Scientist

Walmart • Sunnyvale, CA

4d

About The Position

Role summary: We are looking for a passionate, creative full‑stack Staff Data Scientist to join Walmart's fraud detection team. You will have the unique opportunity to lead the development of advanced ML/AI systems that leverage massive business and social data generated by Walmart Inc.’s unparalleled online and offline commerce ecosystem. About the team: You will be responsible for driving technical strategy and using state‑of‑the‑art deep learning, machine learning, data mining, and anomaly detection techniques to architect, prototype, and guide the production of robust, scalable predictive models and analytic solutions. You will collaborate closely with and provide technical mentorship to a cross‑functional team of Data Scientists, Engineers, Product managers, and Business partners that operate at the intersection of Data Science, Big Data, IT infrastructure, and business operations. In addition to hands‑on modeling, you will shape the team’s technical direction, elevate modeling standards, and guide junior scientists through research and production best practices.

Requirements

• Deep expertise in machine learning, statistics, experimentation, and clear technical communication. Advanced degree (Master or PhD) plus 6+ years of related experience.
• Advanced Python ML proficiency and ability to guide modeling best practices.
• Extensive experience with large‑scale data and distributed systems (GCP/BigQuery preferred).
• Strong programming skills in Java or JavaScript on Linux/UNIX and comfort working with engineering on production deployment.
• Proven experience deploying ML systems and driving MLOps rigor.
• Experience with GenAI/Agentic AI, deep learning, and evaluating emerging research to guide team innovation.
• 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

• 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

• Deep expertise in machine learning, statistics, experimentation, and clear technical communication.
• Advanced Python ML proficiency and ability to guide modeling best practices.
• Extensive experience with large‑scale data and distributed systems (GCP/BigQuery preferred).
• Strong programming skills in Java or JavaScript on Linux/UNIX and comfort working with engineering on production deployment.
• Proven experience deploying ML systems and driving MLOps rigor.
• Experience with GenAI/Agentic AI, deep learning, and evaluating emerging research to guide team innovation.

Benefits

• At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet.
• Health benefits include medical, vision and dental coverage.
• Financial benefits include 401(k), stock purchase and company-paid life insurance.
• Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting.
• Other benefits include short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more.
• You will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable.
• 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.
• Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to a specific plan or program terms.

What This Job Offers

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