Principal, Software Engineer - Fraud and Risk Platform

Position Summary

As a Principal Engineer in Walmart’s Fraud and Risk platform, you will define and drive the architecture of next-generation fraud and risk prevention systems at massive scale. You will lead the design of platforms that combine real-time decisioning, entity intelligence, agentic AI, and human‑in‑the‑loop workflows.

• Lead system design for real‑time fraud detection and policy enforcement
• Architect entity resolution and graph intelligence systems
• Design agentic AI platforms for automated fraud analysis and reasoning
• Shape case management and orchestration systems for investigations

• Define patterns for integrating ML models and AI agents into production
• Lead development of explainability frameworks for fraud decisions
• Enable scalable systems for model deployment, evaluation, and iteration

• Align architecture across Gateway, Platform, and Data Science teams
• Define integration patterns for real‑time and batch systems
• Ensure systems meet requirements for latency, reliability, and scalability

• Drive architectural standards, design patterns, and engineering best practices
• Guide teams through complex technical decisions and tradeoffs
• Establish long‑term technical vision aligned with business goals

• Mentor senior and staff engineers across teams
• Influence hiring, engineering culture, and technical excellence
• Act as a thought leader in fraud, risk, and AI‑driven systems

Proven track record of architecting and scaling large distributed systems

• Deep expertise in system design, platform engineering, and microservices architecture
• Strong experience with real‑time decision systems and high‑throughput architectures
• Experience architecting systems that operationalize ML models at scale
• Strong understanding of ML‑driven decisioning systems and tradeoffs (rules vs models)
• Familiarity with fraud/risk systems, identity systems, or trust & safety domains
• Experience with entity resolution, graph systems, or behavioral analytics (strong plus)
• Ability to drive alignment and influence across organizations
• Strong technical judgment with a focus on long‑term scalability and maintainability

401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and more.

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.

• 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.

• 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.
• Experience in creating inclusive digital experiences and knowledge of Web Content Accessibility Guidelines (WCAG) 2.2 AA standards.

809 11th Ave, Sunnyvale, CA , United States of America