What are the responsibilities and job description for the Senior Data Scientist position at Wal-Mart Stores , Inc.?
Location BENTONVILLE, AR Career Area Data Analytics and Business Intelligence Job Function Data Science Employment Type Regular / Permanent Position Type Salary Requisition WD2074218 What you'll do at What you'll do...Position : Senior Data ScientistJob Location : 702 SW 8th St, Bentonville, AR 72716Duties : Performs data visualization : visualization guidelines and best practices for complex data types; Multiple data visualization tools (Python, R libraries, GGplot, Matplotlib, Ploty, Tableau, PowerBI etc.); Advanced visualization techniques / tools; Multiple story plots and structures (OABCDE); Communication & influencing technique; Emotional intelligence. Generates appropriate graphical representations of data and model outcomes. Understand 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. Present to and influence the team and business audience using the appropriate data visualization frameworks and conveys clear messages through business and stakeholder understanding. Customize communication style based on stakeholder under guidance and leverages rational arguments. Guide and mentor junior associates on story types, structures, and techniques based on context. Understanding Business Context : Requires knowledge of Industry and environmental factors; Common business vernacular; Business practices across two or more domains such as product, finance, marketing, sales, technology, business systems, and human resources and in-depth knowledge of related practices; Directly relevant business metrics and business areas. To Provide recommendations to business stakeholders to solve complex business issues. Develop business cases for projects with a projected return on investment or cost savings. Translate business requirements into projects, activities, and tasks and aligns to overall business strategy and develops domain specific artifact. Serve as an interpreter and conduit to connect business needs with tangible solutions and results. Identify and recommend relevant business insights pertaining to their area of work. Tech. Problem Formulation : Requires knowledge of Analytics / big data analytics / automation techniques and methods; Business understanding; Precedence and use cases; Business requirements and insights. To translate / co-own business problems within one's discipline to data related or mathematical solutions. Identify appropriate methods / tools to be leveraged to provide a solution for the problem. Share use cases and gives examples to demonstrate how the method would solve the business problem. Analytical Modeling : Requires knowledge of feature relevance and selection; Exploratory data analysis methods and techniques; Advanced statistical methods and best-practice advanced modelling techniques (e.g., graphical models, Bayesian inference, basic level of NLP, Vision, neural networks, SVM, Random Forest etc.); Multivariate calculus; Statistical models behind standard ML models; Advanced excel techniques and Programming languages like R / Python; Basic classical optimization techniques (e.g., Newton-Rapson methods, Gradient descent); Numerical methods of optimization (e.g. Linear Programming, Integer Programming, Quadratic Programming, etc.) To select the analytical modeling technique most suitable for the structured, complex data and develops custom analytical models. Conduct exploratory data analysis activities (for example, basic statistical analysis, hypothesis testing, statistical inferences) on available data. Define and finalize features based on model responses and introduces new or revised features to enhance the analysis and outcomes. Identify the dimensions of the experiment, finalize the design, test hypotheses, and conduct the experiment. Perform trend and cluster analysis on data to answer practical business problems and provide recommendations and key insights to the business. Mentor and guide junior associates on basic modeling and analytics techniques to solve complex problems.Minimum education and experience required : Master's degree or the equivalent in Computer Science, Statistics, or related field plus 1 year of experience in analytics or a related field; OR Bachelor's degree or the equivalent in Computer Science, Statistics, or related field plus 3 years of experience in analytics or a related field.Skills required : Must have experience with : Coding in an object-oriented programming language : Python; Building production-ready code set for continuous integration and deployment (CI / CD); Statistical Modeling using regression-based algorithms Ridge / Lasso and elastic net regression; Leveraging time series models like Prophet / Arima and prediction / classification models to improve business operations; Training ML models using ML frameworks like Scikit learn and PyTorch; Pre-processing data and Feature Engineering with Pandas and Numpy libraries; Designing ETL practices and using PySpark or Spark SQL for faster data querying; Designing SQL schema for faster data retrieval; Developing advanced ML models using cloud environments like Azure, Google Cloud; Solid MLOps practices including good design documentation, unit testing, and source code control using Git; Designing and deploying REST API services to host ML models; Creating ML architecture diagrams and optimized system design; Agile methodologies using project planning and tracking management tools e.g., JIRA; Deep-learning frameworks using PyTorch on structured and unstructured data. Employer will accept any amount of experience with the required skills.#LI-DNP #LI-DNIWal-Mart is an Equal Opportunity Employer.
