(USA) Principal, Data Scientist

Walmart • Sunnyvale, CA

3d • $132,000 - $286,000

About The Position

As a Principal Data Scientist at Walmart, you will lead the development and deployment of advanced analytical models Leveraging sophisticated techniques such as Double Machine Learning and Causal Modeling, you will generate robust, data-driven insights that inform strategic decision-making and drive measurable impact. You will collaborate across functions to translate business needs into innovative strategies, mentor team members, and ensure the quality and impact of data insights. Your work will directly influence decision-making and operational efficiency, supporting Walmart’s commitment to excellence and continuous improvement through cutting-edge data science practices. The Sandman/Ad-tech team consists of experienced Machine Learning Engineers, Data Scientists, and Full Stack technologists focused on delivering scalable, data-driven solutions for Walmart. This multidisciplinary group integrates expertise in AI, software engineering, and data science to develop autonomous AI agents, deploy reliable applications, and build core engineering capabilities at enterprise scale. Utilizing data, AI, and agile methods, the team drives innovation that enhances operational efficiency and supports Walmart’s mission. Collaboration within the team fosters the creation of intelligent systems that improve business performance across the organization.

Requirements

• Extensive experience in machine learning algorithms, deep learning, and statistical analysis to develop advanced data models.
• Proficiency in programming languages including Python, SQL, and Java for code development and testing.
• Advanced capability in feature engineering, predictive scoring model development, causal modeling, forecasting, and scenario modeling to support prioritization, and Sales life-stage execution plans.
• Ability to translate complex business requirements into actionable data science strategies aligned with organizational goals.
• Experience deploying scalable models and maintaining model lifecycle management in production environments.
• Proven leadership skills to mentor teams and drive continuous improvement in data science practices.
• Bachelors degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field and 5 years' experience in an analytics related field.
• Masters degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field and 3 years' experience in an analytics related field.
• 7 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, Publications or active peer reviewer in related journals or conference, 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

• Develop, test, and deploy advanced data science solutions using programming languages such as Python and SQL to address complex business challenges.
• Analyze business problems to identify root causes and recommend data-driven approaches aligned with strategic objectives.
• Identify, source, and validate high-quality data from multiple systems to support analytical modeling and insights generation.
• Lead the design and implementation of machine learning models, including feature engineering, model tuning, and validation to ensure accuracy and robustness.
• Collaborate with stakeholders to translate business requirements into actionable data strategies and visualization frameworks.
• Mentor team members on advanced analytical techniques and promote continuous learning and 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.

What This Job Offers

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