(USA) Principal, Software Engineer
About The Position
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. This role requires deep technical leadership, owning architecture across systems and enabling teams to build scalable, intelligent, and explainable fraud prevention platforms. Your expertise will ensure high availability, reliability, and innovation while fostering continuous improvement and operational excellence within a dynamic engineering environment. The Inkiru team is dedicated to detecting and preventing fraud in real time, ensuring a secure shopping experience both online and in stores. Comprising skilled engineers, data scientists, and product managers, the team collaborates to develop advanced platforms capable of processing large-scale data swiftly. As part of this team, engineers contribute to building systems that deliver rapid insights for fraud detection. Working closely with cross-functional partners, they design and implement platform services, applications, and analytics tools that support predictive intelligence and enhance operational effectiveness across Walmart’s ecosystem.
Requirements
- 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
- Ability to drive alignment and influence across organizations
- Strong technical judgment with a focus on long-term scalability and maintainability
- 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.
Nice To Haves
- Experience with entity resolution, graph systems, or behavioral analytics (strong plus)
- 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
- Knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards
- Knowledge of assistive technologies
- Experience integrating digital accessibility seamlessly
- Knowledge of accessibility best practices
Responsibilities
- Define Architecture for Fraud & Risk Platforms
- 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
- Drive AI-Native System Design
- 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
- Own Cross-System Strategy
- 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
Benefits
- Competitive pay
- Performance-based bonus awards
- Medical coverage
- Vision coverage
- Dental coverage
- 401(k)
- Stock purchase
- Company-paid life insurance
- PTO (including sick leave)
- Parental leave
- Family care leave
- Bereavement
- Jury duty
- Voting leave
- Short-term disability
- Long-term disability
- Company discounts
- Military Leave Pay
- Adoption and surrogacy expense reimbursement
- Live Better U (Walmart-paid education benefit program for full-time and part-time associates)
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What This Job Offers
Job Type
Full-time
Career Level
Principal
