Senior Data Scientist

at Wal-Mart Associates, Inc. in Bentonville, Arkansas, United States

Job Description

Duties: Understands, articulates, and applies principles of the defined strategy to routine business problems that involve a single function. Supports the understanding of the priority order of requirements and service level agreements. Helps identify the most suitable source for data that is fit for purpose. Performs initial data quality checks on extracted data. Selects the analytical modeling technique most suitable for the structured, complex data and develops custom analytical models. Conducts exploratory data analysis activities (for example, basic statistical analysis, hypothesis testing, statistical inferences) on available data. Defines and finalizes features based on model responses and introduces new or revised features to enhance the analysis and outcomes. Identifies the dimensions of the experiment, finalizes the design, tests hypotheses, and conducts the experiment. Perform trend and cluster analysis on data to answer practical business problems and provide recommendations and key insights to the business. Mentors and guides junior associates on basic modeling and analytics techniques to solve complex problems. Identifies the model evaluation metrics. Applies best practice techniques for model testing and tuning to assess accuracy, fit, validity, and robustness for multi-stage models and model ensembles. Supports efforts to ensure that analytical models and techniques used can be deployed into production. Supports evaluation of the analytical model. Supports the scalability and sustainability of analytical models. Writes code to develop the required solution and application features by using the recommended programming language and leveraging business, technical, and data requirements. Test the code using the recommended testing approach. Generates appropriate graphical representations of data and model outcomes. Understands customer requirements to design appropriate data representation for multiple data sets. Work with User Experience designers and User Interface engineers as required to build front end applications. Presents to and influences the team and business audience using the appropriate frameworks and conveys clear messages through business and stakeholder understanding.

Minimum education and experience required: : Master’s degree or the equivalent in Computer Science, Analytics, Engineering, or related field plus 1 year of experience in analytics or a related field; OR Bachelor’s degree or the equivalent in Computer Science, Analytics, Engineering, or related field plus 3 years of experience in analytics or a related field.

Skills required: Must have experience with: Advanced-SQL development skills to analyze data and automate data pulls using stored procedures (SQL); Conducting exploratory data analysis activities to get insights on data (R/Python/Tableau Prep); Building Machine Learning, optimization, clustering and time-series models for prediction and other use cases for various business contexts (Python scikit-learn packages/R); Conducting hypothesis tests and correlation tests using concepts of statistics and probability (Python/R); Applying and analyzing the Workforce Planning ecosystem to generate labor budgeting and demand solutions using forecasted and static metrics; Aggregating structured and unstructured bigdata from different repositories and conducting data mining on large-scale dataset (Python/Hadoop); Visualizing data, building dashboards and automating reports to discover trends and patterns for various KPIs (Tableau, PowerBI, PowerQuery, DAX, GGPlot, or Matplotlib); Version controlling and source code management to track code changes for collaborating (Git/Visual Studio); Developing modular and reusable code, test and deploy models to production in order to deliver an end-to-end system (Python/R); Agile project management using Scrum methodology to plan and iterate through the project stages and deliverables (Jira/Confluence). Employer will accept any amount of experience with the required skills.

To apply for this position: Send your resume to and reference the following Job ID number R-1783936

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Job Posting: 4115266

Posted On: Feb 17, 2024

Updated On: Mar 19, 2024

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