Staff Data Scientist - Data Ventures

Key Skills

Algorithms, Machine learning techniques, Python Programming, PyTorch, Scala Programming, Scikit-learn, Spark-SQL, TensorFlow

Job Description

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.

Problem Formulation:

• Analyses 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

Model Deployment & Scaling:

• Ability to work with MLOps to push ML 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.
• 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 and Storyteller:

• 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 cost effectiveness; and participating in and supporting community outreach events.

What you'll bring:

• Deep knowledge and understanding of machine learning, statistics, data science in general.
• Strong programming skill in at least one of python/R
• Ability to execute projects end to end along with junior associates.
• Implement best practices in ML Ops, coding standards, etc.
• Clearly communicate with business, product, and program partners
• Ability to translate complex algorithm's analysis in simple language.
• Ability to present to leadership including external clientele.

About Walmart Global Tech

Imagine working in an environment where one line of code can make life easier for hundreds of millions of people. That’s what we do at Walmart Global Tech. We’re a team of software engineers, data scientists, cybersecurity expert's and service professionals within the world’s leading retailer who make an epic impact and are at the forefront of the next retail disruption. People are why we innovate, and people power our innovations. We are people-led and tech-empowered. We train our team in the skillsets of the future and bring in experts like you to help us grow. We have roles for those chasing their first opportunity as well as those looking for the opportunity that will define their career. Here, you can kickstart a great career in tech, gain new skills and experience for virtually every industry, or leverage your expertise to innovate at scale, impact millions and reimagine the future of retail.

Flexible, hybrid work:

We use a hybrid way of working that is primarily in office coupled with virtual when not onsite. Our campuses serve as a hub to enhance collaboration, bring us together for purpose and deliver on business needs. This approach helps us make quicker decisions, remove location barriers across our global team and be more flexible in our personal lives.

Benefits:

Benefits: Beyond our great compensation package, you can receive incentive awards for your performance. Other great perks include 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and much more.

Equal Opportunity Employer:

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.

The above information has been designed to indicate the general nature and level of work performed in the role. It is not designed to contain or be interpreted as a comprehensive inventory of all responsibilities and qualifications required of employees assigned to this job. The full Job Description can be made available as part of the hiring process.

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 4 years' experience in an analytics related field. Option 2: Masters degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field and 2 years' experience in an analytics related field. Option 3: 6 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, Successful completion of one or more assessments in Python, Spark, Scala, or R, Using open source frameworks (for example, scikit learn, tensorflow, torch)

Primary Location...

2901 SE I STREET, STE TBD, BENTONVILLE, AR 72712-0000, United States of America