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Walmart Logo

(USA) Senior, Data Scientist

Walmart

$108,000 - $216,000
Aug 21, 2025
Reston, VA, US
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Enhance financial planning and strategic decision-making for Walmart's US stores and eCommerce business through data-driven solutions and Generative AI.

Requirements

  • Experience with training and inference of large-scale AI models such as Large Language Models (LLMs), multimodal models, and reasoning models.
  • Knowledge of advanced model optimization techniques, including quantization, pruning, distillation, Low-Rank Adaptation (Lora), and Parameter-Efficient Fine-Tuning (PEFT) for cloud deployment.
  • Solid understanding of LLMs and Genai ecosystems, including GPT, LLaMA, Mistral, Claude, Gemini, AWS Sonnet, and related frameworks/tools.
  • Hands-on experience with RAG (Retrieval-Augmented Generation), AI agent development, and frameworks such as Lang Chain, Langgraph etc.,
  • Experience with Big Data processing and feature engineering using Spark
  • Experience with training machine learning models through Cloud Services including Google Cloud Platform and Microsoft Azure
  • Hands on experience of designing and training large DL models on GPU farm

Responsibilities

  • Utilize LLMs/Genai systems and architectures to build and deploy state-of-the-art Genai systems.
  • Develop data science systems and tools for retail; e-commerce applications:
  • Leverage LLMS to summarize and build large scale applications
  • Experience with training and inference of large-scale AI models such as Large Language Models (LLMs), multimodal models, and reasoning models.
  • Knowledge of advanced model optimization techniques, including quantization, pruning, distillation, Low-Rank Adaptation (Lora), and Parameter-Efficient Fine-Tuning (PEFT) for cloud deployment.
  • Hands-on experience with RAG (Retrieval-Augmented Generation), AI agent development, and frameworks such as Lang Chain, Langgraph etc.,
  • Experience with Big Data processing and feature engineering using Spark

Other

  • Establish cross-functional relationships to maintain win-win situation for the corporation
  • Collaborate with various product stake holders and business owners to formulate and productionize a solution.
  • Problem solver with can-do attitude, not afraid of facing new problems, technical challenges, delivery pressures
  • Ability to clearly define problems, models and constraints from informal and flexible business requirements
  • Form collaborative working environment.