Staff, Data Scientist

Walmart Walmart · Retail · Bentonville, AR

Staff Data Scientist at Walmart focusing on Decision Sciences, using machine learning, statistical modeling, simulation, and optimization to solve complex business problems in areas like Supply Chain and Store Operations. The role involves developing and refining algorithms, ensuring model scalability, and collaborating with various teams to deliver analytical solutions.

What you'd actually do

  1. Identifying opportunities and business problems and framing them into advanced optimization models (e.g. linear programming, mixed-integer programming).
  2. Performing in-depth data exploration and analysis to uncover insights, trends and patterns that inform optimization strategies.
  3. Developing and refine algorithms for process improvements, resource allocation and cost optimization.
  4. Ensuring optimization and simulation models are scalable and robust for production deployment.
  5. Developing dashboards and visualizations to communicate model performance and recommendations to stakeholders.

Skills

Required

  • 5+ years of experience in utilizing advanced analytics to solve business problems
  • Demonstrated expertise in developing advanced data science models and leading data-driven projects from conception to implementation, driving and influencing project roadmaps
  • Expertise in mathematical modeling, linear programming, mixed-integer programming, constraint programming, or stochastic optimization
  • Proficiency in programming languages like Python, Java, C, C++
  • experience using optimization libraries (e.g., CPLEX, Gurobi)
  • Strong experience with simulation frameworks and techniques (e.g., Monto Carlo, discrete-event, agent-based simulation)
  • Solid understanding of statistical methods and machine learning concepts
  • Proficient coding in one or more languages: Java, C++, Python, Spark, Scala, or R
  • Strong proficiency in SQL for data manipulation and querying
  • Proficient with data warehouse like BigQuery and cloud platforms (GCP, Azure)
  • Exceptional analytical and problem-solving skills
  • Excellent verbal and written communication skills
  • Track record of successfully interacting with business stakeholders
  • Experience mentoring junior operations research or machine learning scientists

Nice to have

  • Mentorship: Guiding and mentoring junior associates on story types, structures, and techniques based on context.

What the JD emphasized

  • advanced optimization models
  • optimization and simulation models
  • mathematical modeling
  • linear programming
  • mixed-integer programming
  • constraint programming
  • stochastic optimization
  • simulation frameworks and techniques
  • Monto Carlo
  • discrete-event
  • agent-based simulation

Other signals

  • modeling complex business problems
  • machine learning
  • statistical modeling
  • simulation
  • optimization