(USA) Principal, Data Scientist

Position Summary...

What you'll do...

• Lead the development and deployment of machine learning models across Walmart’s Marketplace but with core focus on offerings which are fulfilled by the sellers themselves. Drawing on your extensive experience, you will work on large-scale data challenges, design innovative algorithms, and collaborate with cross-functional teams to drive measurable business outcomes.
• Lead the end-to-end lifecycle of AI/ML projects, from ideation to deployment, ensuring alignment with Walmart’s Marketplace strategic goals.
• Develop novel algorithms and leverage data science frameworks (e.g., TensorFlow, PyTorch, Sagemaker, etc.) to solve complex problems in promise optimization, abuse detection, return optimization and other business areas.
• Drive data-derived insights across a wide range of retail challenges by developing advanced statistical models, machine learning algorithms and computational algorithms/.
• Direct the gathering of data, assessing data validity and synthesizing data into large analytics datasets to support project goals
• Utilize big data analytics and advanced data science techniques to identify trends, patterns, and discrepancies in data. Determine additional data needed to support insights
• Build and train statistical models and machine learning algorithms, ready for deployment
• Monitor model performance and refine/tune the model parameters to achieve pre-defined outputs at scale. Communicate insights to business partners in WBRs/MBR’s/QBRs, and influence future data-science roadmap.
• Collaborate with teams across business, product, and engineering to understand forward-looking roadmap, and integrate data science solutions seamlessly.
• Advocate for best practices in software development, including continuous integration/continuous deployment, unit testing, and documentation, to ensure robust and reliable systems.
• Mentor junior data scientists and contribute to building a culture of innovation and learning within the data science community at Walmart.

• Bachelor’s degree with 10+ years of experience / master’s degree with 7+ years of experience. Educational qualifications should be preferably in Computer Science/ Data Science/ Industrial Engineering/ Mathematics/ Statistics or a related area.
• Proven track record in designing and implementing AI/ML solutions for large-scale, high-performance systems.
• Proven track record of building and maintaining APIs for machine learning or data-driven applications.
• Hands on experience building data-science, machine learning or AI based products/solutions.
• Experience in applying causal learning and anomaly detection in ecommerce domain.
• Experience in machine learning, supervised and unsupervised and deep learning.
• Experience in analyzing complex/ambiguous problems and translating it into data science algorithms/solutions.
• Experience in Python with excellent knowledge of Data Structures
• Experience with big data analytics and platforms (using software like PyTorch, TensorFlor, Hive, Spark)
• Experience with SQL and relational databases, data warehouse.

• Masters or Ph.D. in a related discipline.
• 5+ years' experience in e-commerce, Marketplace, or Supply Chain/ Operations optimization.
• Experience with Neural Networks, LLMs, AI is a plus.
• Hands-on experience in network optimization or distributed computing framework like Spark.

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.

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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.

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

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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.

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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.

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

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The annual salary range for this position is $143,000.00-$286,000.00

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Additional compensation includes annual or quarterly performance bonuses.

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Additional compensation for certain positions may also include:

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- Stock

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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), 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...

840 W California Ave, Sunnyvale, CA 94086-4828, United States of America