Principal, Data Scientist

Position Summary...

What you'll do...

As a Principal Data Scientist, you will serve as a senior technical leader within Walmart International's Data Science organization, driving the design and deployment of large-scale AI, ML, and Generative AI solutions across critical retail domains including Inventory Management, Pricing, Supply Chain, Last-Mile Delivery, and Space & Assortment. This role is a high-impact individual contributor position that operates at enterprise scale. You will lead complex, ambiguous problem spaces end-to-end—shaping technical strategy, building production-grade systems, mentoring senior scientists, and partnering closely with product and engineering leaders. You will be instrumental in advancing agentic AI systems, decision intelligence platforms, and LLM-powered applications that power Walmart’s global operations.

About Team:
Focusing on customer, associate and business needs, this team works with Walmart International, which includes more than 5,200 retail units, operating in 23 countries such as Canada, Central America, Chile, China, India, Mexico and South Africa to name a few.

What you'll do:

• Lead End-to-End AI Systems Development
  Design, build, and productionize large-scale AI/ML and Gen AI systems that deliver measurable business impact across pricing, inventory, supply chain, space , assortment and store operations.
• Architect Agentic AI & Decision Systems
  Build intelligent, agent-based AI systems that translate business objectives into autonomous, goal-directed workflows for optimization, forecasting, and operational decision-making.
• Apply Optimization, Forecasting  & Decision Science
  Design and deploy optimization,  simulation, forecasting, reinforcement learning, and prescriptive analytics models to drive revenue growth, cost reduction, and operational efficiency.
• Own the Full ML Lifecycle
  Lead model development, evaluation, deployment, monitoring, drift detection, and continuous improvement using modern MLOps and CI/CD practices.
• Drive Experimentation & Causal Learning
  Establish rigorous experimentation frameworks (A/B testing, causal inference, multi-armed bandits) to validate impact and guide product and model evolution.
• Advance Applied Research & Innovation
  Contribute to applied research in ML, GenAI, optimization, and decision intelligence through internal research programs, patents, and external publications.
• Partner Across Functions
  Work closely with product, engineering, design, and operations teams to translate complex business challenges into scalable AI solutions with clear outcomes.

What you'll bring:

• 10+ years of applied data science and machine learning experience (or 8+ years with a PhD), with a strong foundation in statistics, optimization, and deep learning.
• 5+ years of experience leading end-to-end ML products from concept to large-scale production.
• Proven experience building and deploying mission-critical AI systems at enterprise scale.
• Deep hands-on expertise in Python and SQL, with strong experience in PyTorch or TensorFlow.
• Demonstrated expertise in experimentation design, causal inference, and real-world model evaluation.
• Strong experience with MLOps, including CI/CD pipelines, monitoring, and drift detection.
• Solid understanding of retail and operational domains, including pricing, inventory, and supply chain.

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. For information about PTO, see