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(USA) Principal Data Scientist

Company: Walmart
Location: Dallas
Posted on: February 25, 2021

Job Description:

Position Summary... What you'll do... Data Source Identification: Understands the priority order of requirements and service level agreements. Defines and identifies the most suitable
sources for required data that is fit for purpose, referring to external sources as required. Performs initial data quality checks on the extracted data.
Reviews the deliverables of junior associates and provides guidance.
Data Strategy: Understands, articulates, interprets, and applies the principles of the defined strategy to unique, moderately complex business
problems that may span one or main functions or domains.
Problem Formulation: Analyzes the business problem within one's discipline and questions assumptions to help the business identify the root cause.
Identifies and recommends approach to resolve the business problem. Sets data analytics, big data analytics, automation goals, and deliverables
based on the established success criteria and define key metrics to measure progress and effectiveness of the solution. Quantifies business impact.
Analytical Modeling: Selects appropriate modeling techniques for complex problems with large scale, multiple structured and unstructured data sets.
Selects and develops variables and features iteratively based on model responses in collaboration with the business. Conducts exploratory data
analysis activities (for example, basic statistical analysis, hypothesis testing, statistical inferences) on available data. Identifies dimensions and
designs of experiments and creates test and learn frameworks. Interprets data to identify trends to go across future data sets. Creates continuous,
online model learning along with iterative model enhancements. Develops newer techniques (for example, advanced machine learning algorithms,
auto ML) by leveraging the latest trends in machine learning, artificial intelligence to train algorithms to apply models to new data sets. Guides the
team on feature engineering, experimentation, and advanced modeling techniques to be used for complex problems with unstructured and multiple
data sets (for example, streaming data, raw text data).
Model Deployment & Scaling: Deploys models to production. Continuously logs and tracks model behavior once it is deployed against the defined
metrics. Identifies model parameters which may need modifications depending on scale of deployment.
Code Development & Testing: Writes code to develop the required solution and application features by determining the appropriate programming
language and leveraging business, technical, and data requirements. Creates test cases to review and validate the proposed solution design. Creates
proofs of concept. Tests the code using the appropriate testing approach. Deploys software to production servers. Contributes code documentation,
maintains playbooks, and provides timely progress updates.
Applied Business Acumen: Evaluates proposed business cases for projects and initiatives. Influences business stakeholder decision making.
Translate business requirements into strategies, initiatives, and projects and aligns them to business strategy and objectives, and drives the execution
of deliverables. Builds and articulates the business case and return on investment and delivers work that has demonstrable value. Challenge
business assumptions on topics related to one's domain expertise. Develops new organization-wide processes and ways of working. Teaches and
guides others on best practices. Proactively engages in the external community to build Walmart's brand and learn more about industry practices.
Model Assessment & Validation: Identifies and reviews model evaluation metrics based on analytical requirements. Applies suitable techniques for
model testing and tuning, to assess accuracy, fit, validity, and robustness. Ensures testing information is documented and maintained by the team.
Data Visualization: Identifies and recommends the most suitable visualization tools based on context. Generates appropriate graphical
representations of data and model outcomes. Understands customer requirements to design appropriate data representation for complex data sets
and drive User Experience designers and User Interface engineers to build front end applications. Defines application design based on customer
requirements. Builds compelling stories based on context to integrate multiple pieces of information into cohesive insights. Presents to and influences
diverse audiences using the appropriate frameworks and conveys clear messages through deep business and stakeholder understanding.
Customizes communication style based on stakeholders and leverages relationships to drive behavioral change. Guides and mentors junior
associates on story types, structures, and techniques based on context.
Drives the execution of multiple business plans and projects by identifying customer and operational needs; developing and communicating business
plans and priorities; removing barriers and obstacles that impact performance; providing resources; identifying performance standards; measuring
progress and adjusting performance accordingly; developing contingency plans; and demonstrating adaptability and supporting continuous learning.
Provides supervision and development opportunities for associates by selecting and training; mentoring; assigning duties; building a team-based work
environment; establishing performance expectations and conducting regular performance evaluations; providing recognition and rewards; coaching
for success and improvement; and ensuring diversity awareness.
Promotes and supports company policies, procedures, mission, values, and standards of ethics and integrity by training and providing direction to
others in their use and application; ensuring compliance with them; and utilizing and supporting the Open Door Policy.Ensures business needs are being met by evaluating the ongoing effectiveness of current plans, programs, and initiatives; consulting with business partners, managers, co-workers, or other key stakeholders; soliciting, evaluating, and applying suggestions for improving efficiency and costeffectiveness; and participating in and supporting community outreach events. Minimum Qualifications... Outlined below are the required minimum qualifications for this position. If none are listed, there are no minimum qualifications. Option 1: Bachelors degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field and 5 years' experience in an analytics related field. Option 2: Masters degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field and 3 years' experience in an analytics related field. Option 3: 7 years' experience in an analytics or related field Preferred Qualifications... Outlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications. Data science, machine learning, optimization models, PhD in Machine Learning, Computer Science, Information Technology, Operations Research, Statistics, Applied Mathematics, Econometrics, Publications or active peer reviewer in related journals or conference, Successful completion of one or more assessments in Python, Spark, Scala, or R, Using open source frameworks (for example, scikit learn, tensorflow, torch) About Walmart At Walmart, we help people save money so they can live better. This mission serves as the foundation for every decision we make, from responsible sourcing to sustainability-and everything in between. As a Walmart associate, you will play an integral role in shaping the future of retail, tech, merchandising, finance and hundreds of other industries-all while affecting the lives of millions of customers all over the world. Here, your work makes an impact every day. What are you waiting for?

Walmart, Inc. 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, ideas and opinions - while being inclusive of all people. All the benefits you need for you and your family

  • Financial benefits including 401(k), stock purchase plans, life insurance and more
  • Associate discounts in-store and online
  • Education assistance for Associate and dependents
  • Pay during military service
  • Paid Time off - to include vacation, sick, parental
  • Short-term and long-term disability for when you can't work because of injury, illness, or childbirth Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific plan or program terms. For information about benefits and eligibility, see One.Walmart.com/Benefits . Frequently asked questions On average, how long does it take to fill out an application? Can I change my application after submitting? How do you protect my personal information?

Keywords: Walmart, Dallas , (USA) Principal Data Scientist, Other , Dallas, Texas

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