Senior Data Scientist

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. Analytical Modeling: 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. Customize communication style based on stakeholder under guidance and leverages rational arguments.

Minimum education and experience required: Master’s degree or the equivalent in Statistics, Computer Science, or a related field plus 1 year of experience in analytics or related experience; OR Bachelor’s degree or the equivalent in Statistics, Computer Science, or a related field plus 3 years of experience in analytics or related experience; OR 5 years of experience in analytics or related experience.

Skills required: Must have experience with: extracting and interpreting data from a web analytics tool (Google analytics or Quantum Metrics); creating visualizations and automated dashboards utilizing Tableau, Power BI and Looker; analyzing data utilizing statistical programming languages R and Python and advanced analytical tools such as Dataiku; Experimental Designing and AB testing (AB Tasty, Test and Learn); Extract Transform Load (ETL) data in relational databases (SQL or DB2); Data Science and Machine Learning Algorithms and Techniques Regression; unsupervised Leaning techniques; enhancing accuracy by Cross Validation; utilizing Cloud Data Analytics serverless warehouse services using Databricks and Big Query to handle large volumes of data quickly and efficiently; collaborating and iterating agile methodology using JIRA framework; utilizing tools such as Excel and Power point for presentations to stakeholders; analyzing Net promoter score (NPS) data to understand customer sentiment, loyalty and areas of improvement; analyzing and evaluating data objectively and providing logical and data-driven strategic solutions. Employer will accept any amount of experience with the required skills.

Wal-Mart is an Equal Opportunity Employer.

About Sam's Club

Sam Walton opened the first Sam's Club in 1983 to meet a growing need among customers who wanted to buy merchandise in bulk. Since then, Sam's Club has grown rapidly, opening more than 600 clubs in the U.S. and 100 clubs internationally. By offering affordable, wholesale merchandise to members, Sam's Club helps make saving simple for families and small business owners.

Sam's Club employs about 110,000 associates in the U.S. The average club is 134,000 square feet and offers bulk groceries and general merchandise. Most clubs also have specialty services, such as a pharmacy, an optical department, a photo center, or a tire and battery center.

Sam’s Club is an Equal Opportunity Employer- By Choice. We believe we are best equipped to help our associates, customers, and the communities we serve live better when we really know them. That means understanding, respecting, and valuing diversity- unique styles, experiences, identities, abilities, ideas and opinions- while being inclusive of all people.