Senior, Data Scientist MLE

Position Summary...

What youll do...

The Senior Data Scientist will design build and productionize machine learning solutions end-to-end with a strong emphasis on ML engineering best practices and agentic AI systems (VLM/LLM-powered agents tool use orchestration evaluation). You will partner with product engineering and business stakeholders to deliver measurable impact through scalable models and intelligent workflows.

About Team:
Our team works closely with our US stores and eCommerce business to better serve customers by empowering team members stores and merchants with technological innovation. From groceries and entertainment to sporting goods and crafts Walmart U.S. offers an extensive selection that our customers value whether they shop online at through one of our mobile apps or in-store. Focus areas include customers stores and employees in-store service merchant tools merchant data science and search and personalization.

What youll do:

• Build production ML systems: develop robust training/inference pipelines model serving patterns CI/CD for ML and observability (drift performance cost).
• Develop agentic AI solutions: design and implement LLM-based agents (planning tool/function calling retrieval memory multi-agent patterns) to automate workflows and decision support.
• RAG and knowledge systems: build retrieval-augmented generation pipelines (indexing chunking embeddings reranking) and optimize for latency quality and cost.
• Evaluation and experimentation: create offline/online evaluation frameworks for ML and LLM/agent systems (golden sets human-in-the-loop review A/B tests guardrail metrics).
• Data and platform collaboration: work closely with data engineering and platform teams to ensure data quality lineage governance and scalable infrastructure.
• Stakeholder communication: translate complex technical results into clear business outcomes and recommendations.

What youll bring:

• Bachelors degree in Computer Science Statistics Mathematics Engineering or related field (Masters/PhD preferred) or equivalent practical experience.
• 5 years of experience building and deploying ML solutions in production environments.
• Strong proficiency in Python and common ML libraries (e.g. scikit-learn XGBoost/LightGBM PyTorch/TensorFlow).
• Demonstrated ML engineering experience:
  • Pipeline orchestration (e.g. Airflow Dagster Prefect)
  • Model packaging/serving (e.g. FastAPI BentoML TorchServe)
  • Containerization and deployment (Docker Kubernetes)
  • CI/CD and testing practices for ML
  • Monitoring/observability (model metrics drift logging)
• Solid understanding of statistics experimental design and causal/measurement thinking.
• Experience with agentic AI / LLM systems including:
  • Tool/function calling and agent orchestration frameworks (e.g. LangGraph/LangChain Semantic Kernel LlamaIndex custom orchestrators)
  • Prompting strategies structured outputs and reliability techniques
  • RAG design and optimization
  • LLM/agent evaluation methodologies
• Strong SQL skills and experience working with large-scale datasets.

About Walmart Global Tech
Imagine working in an environment where one line of code can make life easier for hundreds of millions of people. Thats what we do at Walmart Global Tech. Were a team of software engineers data scientists cybersecurity experts and service professionals within the worlds 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. Walmarts culture is a competitive advantage and its fostered by being together. Working together in person allows us to collaborate align quickly and innovate with greater speed. We use our campuses to create purposeful connection rooted in deepening understanding and investing in the development of our associates.
Our hubs: Walmart is a global company with offices across the United States and around the world. Our global headquarters is in Bentonville Arkansas with primary hubs in the San Francisco Bay area and New York/New Jersey.

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 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 Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sams Club facilities. Programs range from high school completion to bachelors 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 .
The annual salary range for this position is $90000.00 - $180000.00 Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include :
- 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 3 years experience in an analytics related field. Option 2- Masters degree in Statistics Economics Analytics Mathematics Computer Science Information Technology or related field and 1 years experience in an analytics related field. Option 3 - 5 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 Masters 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 Walmarts accessibility standards and guidelines for supporting an inclusive culture.

Primary Location...

2501 Se J St Ste A Bentonville AR 72716-3724 United States of America

Walmart and its subsidiaries are committed to maintaining a drug-free workplace and has a no tolerance policy regarding the use of illegal drugs and alcohol on the job. This policy applies to all employees and aims to create a safe and productive work environment.