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Walmart Canada · 6 months ago

Principal, Software Engineer - AI

Bentonville, AR

Full-time

Onsite

Senior Level, Lead/Staff

$132K/yr - $264K/yr

5+ years exp

Walmart Canada is a leading retailer seeking a Principal Software Engineer - AI to drive innovation in associate experiences through advanced technology. The role involves designing and implementing machine learning solutions and developing systems that enhance productivity for over 2 million users globally.

DeliveryRetailShopping

Responsibilities

Develop and deploy machine learning models using decision trees, random forests, and gradient boosting techniques (e.g., XGBoost), with a focus on scalability, interpretability, and hyperparameter optimization

Apply unsupervised learning techniques such as topic modeling (LDA, BERTopic) and clustering (K-means, HDBSCAN) to extract insights from unstructured data

Build and refine Retrieval-Augmented Generation (RAG), Conversational-Aware Generation (CAG), and Knowledge-Augmented Generation (KAG) systems, utilizing advanced chunking, hybrid retrieval, and reranking strategies

Design and orchestrate multi-agent LLM systems using paradigms like ReAct, self-reflection, and plan & execute, integrating tool usage and agent-to-agent communication protocols

Fine-tune and optimize large language models using methods like LoRA, QLoRA, quantization, prompt tuning, and distillation

Develop automated and human-in-the-loop evaluation frameworks for NLP tasks such as summarization, question answering, and code generation

Work across cloud-native AI platforms (Azure, AWS, GCP) to deploy scalable ML/AI solutions, using modern MLOps tools to streamline experimentation and production workflows

Qualification

Machine LearningGenerative AILarge Language ModelsCloud AI PlatformsPythonMLOps ToolsModel InterpretabilityTeam CollaborationProblem SolvingCommunication Skills

Required

Bachelor's degree in computer science, computer engineering, computer information systems, software engineering, or related area and 5 years' experience in software engineering or related area

7 years' experience in software engineering or related area

Preferred

Master's degree in computer science, computer engineering, computer information systems, software engineering, or related area and 3 years' experience in software engineering or related area

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

Knowledge of accessibility best practices and Walmart's accessibility standards and guidelines for supporting an inclusive culture