(USA) Principal, Software Engineer - Fraud and Risk Platform

Walmart

Actively hiring

Sunnyvale, CA Posted 28 days ago $143,000–$286,000 / year

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At a glance

AI generated

TL;DR

As a Principal Engineer in Walmart’s Fraud and Risk platform, you will lead the architecture of next-generation fraud prevention systems at massive scale, combining real-time decisioning, entity intelligence, agentic AI, and human-in-the-loop workflows. You will define system design for real-time fraud detection, architect entity resolution and graph intelligence systems, and drive AI-native system development by integrating ML models into production while ensuring explainability. Additionally, you will own cross-system strategy to align architecture across teams and ensure scalability, reliability, and performance. This role requires deep expertise in distributed systems, microservices architecture, real-time decisioning, and operationalizing ML models at scale, with a focus on fraud/risk systems and entity resolution. You will mentor senior engineers and influence hiring and technical culture while maintaining long-term technical vision aligned with business goals.

Skills

Kubernetes Docker AWS CI/CD Python Java Go PostgreSQL Redis Apache Kafka GraphQL Prometheus Grafana Microservices Entity Resolution Graph Databases ML Models Real-Time Decisioning MLOps

What you'll do

Lead the design of real-time fraud detection and policy enforcement systems.
Architect entity resolution and graph intelligence platforms for fraud prevention.
Define agentic AI frameworks to automate fraud analysis and reasoning.
Develop explainability frameworks for transparent decision-making in fraud cases.
Align architecture across Gateway, Platform, and Data Science teams for consistency.
Drive technical direction by establishing long-term vision and engineering standards.

What we're looking for

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 operationalizing ML models at scale and understanding ML-driven decisioning tradeoffs.
Familiarity with fraud/risk systems, identity systems, or trust & safety domains.
Ability to drive alignment and influence across organizations.

Market check

Salary context

This $143,000–$286,000 range sits above 85% of similar postings on FindRole.

Peer median band

$117,000–$234,000

Median floor and ceiling across peers.

Typical midpoint (25–75%)

$161,500–$214,500

Middle half of comparable postings.

Based on 240 comparable postings.

* 240 is the maximum number of comparable postings sampled.

Employer

About Walmart

Walmart Inc. is the world''s largest retailer by revenue, operating a chain of hypermarkets, discount department stores, and grocery stores, as well as a growing e-commerce presence through Walmart.com. Industry: General Merchandise & Grocery Retail

Walmart currently has 495 open roles on FindRole.

Listed pay typically runs $117,000–$234,000 across 487 roles with salary data.

Most-posted roles

View all roles at Walmart

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