Senior, Data Scientist

About the role

Sam's Club is our membership warehouse club, a business model that provides our members with high-quality products at prices that are unrivaled by traditional retail. Sam's Club provides a carefully curated assortment of items, as well as developing and leading technologies and services such as Scan & Go, Club Pickup, and home delivery service in select markets. Sam's Club also provides travel, auto purchasing, pharmacy, optical, hearing aid centers, tire and battery centers, and a portfolio of business operations support services.

Requirements

• Agentic AI Expertise: Proven hands-on experience building and deploying AI agents in production, with deep knowledge of reasoning frameworks, orchestration tools, and memory systems.
• Evaluation & Safety: Experience creating evaluation pipelines and safety guardrails for AI agents, including methods to detect hallucination and ensure factual accuracy.
• Framework Proficiency: Familiarity with agent orchestration frameworks (e.g., LangChain, LlamaIndex, Haystack) and vector databases (FAISS, Pinecone, Weaviate) for RAG and memory.
• Strong ML Foundations: Solid grounding in machine learning, statistics, and causal inference, with experience applying both traditional ML and modern LLM-based methods. Understanding of advance ML topics viz. Deep learning (ENN, CNN, RNN, etc.), GAN, Transformers, NLP;
• Prompting & Fine-Tuning: Expertise in prompt engineering, system instruction design, and fine-tuning techniques (LoRA, PEFT, RLHF/RLAIF a plus).
• MLOps & Observability: Strong background in CI/CD pipelines, monitoring, logging, and observability for deployed AI/ML systems.
• Big Data: Experience working with large datasets, finding insights, and telling stories using data. Good knowledge in working with distributed datastores (e.g., SQL, NoSQL), and Big Data and Cloud technologies like GCP BQ.
• Cloud: Experience with E2E pipeline development experience in cloud environment, preferably with GCP including vertex AI, Dataproc, Airflow, etc.
• Programming Skills: Proficiency in Python, SQL, PyTorch/TensorFlow, HuggingFace, and distributed computing frameworks (PySpark).
• Business Acumen: Ability to translate business challenges into AI solutions and communicate technical concepts clearly to non-technical partners.
• Leadership & Communication: Experience mentoring data scientists and collaborating cross-functionally in agile environments.
• Preferred: Experience in retail and merchandising domain (assortment, pricing, space, planogram etc).
• About Walmart Global Tech

Additional Information

Position Summary... What you'll do... As a Senior Data Scientist at Sam's Club Applied AI/ML Labs , you will lead the design, development, and deployment of AI agents powered by LLMs and ML/DL models . You will be responsible for creating production-grade AI agents that drive measurable business impact in retail - from operations and merchandising to finance, conversational AI, and e-commerce. Success in this role requires not only deep technical expertise but also the ability to collaborate closely with product and business teams to ensure AI solutions are reliable, responsible, and strategically aligned .

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