Data Scientist III - Machine Learning Platform

Position Summary...

What you'll do...

About The Team :

You can get further details about the nature of this opening, and what is expected from applicants, by reading the below.

We invite you to become part of a team that is dedicated to the development of data-driven models and services. Our primary focus is on driving high-quality demand from a plethora of digital platforms, including Google, Bing, Facebook, and Pinterest, to Walmart's E-Commerce sites.

What you will do :

• The development and deployment of a foundational AI layer along with Gen AI models for online inferencing. This is crucial for supporting applications such as Ads moderation, social commerce, etc.
• The development and maintenance of a robust, scalable machine learning platform, facilitating end-to-end machine learning operations from model development and versioning to deployment.
• The creation, deployment, and maintenance of high-quality web-based dashboard systems to draw visual insights from our ever-expanding dataset, monitor machine learning models, and evaluate model performance via A / B testing.
• The development, testing, and deployment of big-data and machine learning pipelines, encompassing data ingestion, model production, and visualization.
• Efficient management of public cloud services, using public cloud tools and resources to scale our storage and computation capabilities on the Google Cloud Platform.

What you will bring :

We are looking for individuals who possess :

• Proficiency in at least one programming language such as Python, Java, C++, or JavaScript.
• A solid understanding of data structures and algorithms.
• Extensive knowledge and experience in distributed inferencing in GPUs, LLM serving framework, and PyTorch / Tensorflow, etc.
• Knowledge and experience in Linux, public cloud computing, Docker, and Kubernetes.
• Experience in the development of REST API services.
• Data Strategy : Requires knowledge of understanding of business value and relevance of data and data enabled insights / decisions;

Appropriate application and understanding of data ecosystem including Data Management, Data Quality Standards and Data Governance, Accessibility, Storage and Scalability, etc.

Understanding of the methods and applications that unlock the monetary value of data assets. To understand, articulate, and apply principles of the defined strategy to routine business problems that involve a single function.

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.

Model Deployment and Scaling : Requires knowledge of impact of variables and features on model performance; understanding of servers, model formats to store models.

To support efforts to ensure that analytical models and techniques used can be deployed into production. Support evaluation of the analytical model.

Support the scalability and sustainability of analytical models.

Code Development and Testing : Requires knowledge of coding languages like SQL, Java, C++, Python and others; Testing methods such as static, dynamic, software composition analysis, manual penetration testing and others;

Business, domain understanding. To write 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.

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.

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 Support the development of business cases and recommendations.

Drive delivery of project activity and tasks assigned by others. Support process updates and changes. Support, under guidance, in solving business issues.

Data Source Identification : Requires knowledge of Functional business domain and scenarios; Categories of data and where it is held;

Business data requirements; Database technologies and distributed datastores (e.g. SQL, NoSQL); Data Quality; Existing business systems and processes, including the key drivers and measures of success.

To Understand the appropriate data set required to develop simple models by developing initial drafts. Support the identification of the most suitable source for data Maintains awareness of data quality.

Model Assessment and Validation : Requires knowledge of model fit testing, tuning, and validation techniques (e.g., Chi square, ROC curve, root mean square error etc.

Impact of variables and features on model performance To support model fit testing and statistical inferences to evaluate performance.

Assess the impact of variables and features on model performance.

Data Visualization : Requires knowledge of Visualization guidelines and best practices for complex data types; Multiple data visualization tools (for example, Python, R libraries, GGplot, Matplotlib, Ploty, Tableau, PowerBI etc.

• Advanced visualization techniques / tools; Multiple story plots and structures (OABCDE); Communication & influencing technique;
• Emotional intelligence. To generate appropriate graphical representations of data and model outcomes under guidance. Support the understanding of customer requirements and design data representations for simple data sets;

Present to and influence the team using the appropriate data visualization frameworks and convey messages through basic business understanding.

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.

At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet.

Health benefits include medical, vision and dental coverage. Financial benefits include 401(k), stock purchase and company-paid life insurance.

Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting.

Other benefits include short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more.

You will also receive PTO and / or PPTO that can be used for vacation, sick leave, holidays, or other purposes. The amount you receive depends on your job classification and length of employment.

It will meet or exceed the requirements of paid sick leave laws, where applicable.

For information about PTO, see https : / / one.walmart.com / notices.

Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities.

Programs range from high school completion to bachelor's degrees, including English Language Learning and short-form certificates.

Tuition, books, and fees are completely paid for by Walmart.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 a specific plan or program terms.

For information about benefits and eligibility, see One.Walmart.

The annual salary range for this position is $117,000.00-$234,000.00Additional compensation includes annual or quarterly performance bonuses.

Additional compensation for certain positions may also include : - Stock 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 2 years' experience in an analytics or related field.

Option 2 : Masters degree in Statistics, Economics, Analytics, Mathematics, Computer Science, Information Technology or related field.

Option 3 : 4 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, Master’s degree 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), We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.

2 AA standards, assistive technologies, and integrating digital accessibility seamlessly. The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.

Primary Location... 680 West California Avenue, Sunnyvale, CA 94086-4834, United States of America

J-18808-Ljbffr