Senior, Data Scientist

Walmart · Retail · Crossman Respect Building CA SUNNYVALE, San Bruno, CA

Senior Data Scientist role focused on advancing demand forecasting and machine learning solutions within Walmart's OneDemand Forecasting organization. The role involves designing and improving models for large-scale forecasting systems, collaborating with cross-functional teams, and applying advanced statistical and ML techniques to enhance accuracy, scalability, and explainability. Responsibilities include building and improving forecasting models, experimenting with ML/statistical techniques, collaborating with engineering on pipelines and deployment, prototyping new methods, integrating data sources, monitoring/evaluating models, and participating in responsible AI practices.

What you'd actually do

  1. Build and improve forecasting models to support demand planning across multiple levels, including item, store, and location.
  2. Experiment with and implement advanced ML/statistical techniques (e.g., regression, time series analysis, probabilistic modeling) to improve forecast accuracy.
  3. Collaborate with engineering teams to define feature pipelines, improve model training workflows, and deploy forecasts into production environments.
  4. Assist with prototyping new forecasting methods, such as ensembling models or incorporating deep learning architectures, under the guidance of senior team members.
  5. Integrate additional data sources (e.g., promotions, events, macroeconomic indicators) to enhance inputs for generating more accurate forecasts.

Skills

Required

  • machine learning
  • data analysis
  • forecasting
  • Python
  • R
  • Scikit-learn
  • TensorFlow
  • PyTorch
  • SQL
  • large datasets
  • cloud computing environments
  • time series forecasting techniques
  • collaborate with interdisciplinary teams
  • translate business problems into data science solutions
  • Strong communication skills

Nice to have

  • probabilistic models
  • deep learning architectures
  • containerization
  • MLOps tools

What the JD emphasized

  • large-scale forecasting systems
  • advanced forecasting methods
  • machine learning models
  • improve forecast accuracy
  • prototyping new forecasting methods
  • responsible AI practices

Other signals

  • improving forecast accuracy
  • large-scale forecasting systems
  • advanced forecasting methods
  • machine learning models