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

Walmart; Sunnyvale (CA); On-site; USD 143,000 - 286,000; Full time

Benefits offered by this job

401(k) match

Stock purchase plan

Paid maternity & parental leave

Job summary

Walmart is seeking a Principal Engineer to define and drive the architecture of next‑generation fraud and risk prevention at massive scale in Sunnyvale, CA. You will lead real-time decisioning, entity resolution and AI-enabled workflows with human‑in‑the‑loop support to protect customers online and in-store.

You will own cross‑system strategy, mentor engineers, and set technical direction for production ML integration, explainability, and scalable platform services with partners across Walmart

Qualifications

• Bachelor's degree in computer science, computer engineering or related area.
• Experience designing scalable distributed systems for real-time decisioning.
• Strong architectural leadership across large teams.

Responsibilities

• 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.
• Shape case management and orchestration systems for investigations.

Skills

Distributed systems

Real-time decisioning

Architectural design

Leadership

Education

Bachelor's degree in CS/CE/IS

Job description

Position Summary…

What you’ll do…

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. About Team: The Inkiru team’s mission is to detect and prevent Fraud in real time and enable a safe shopping experience for all our customers online and in-store. We are a team of passionate Engineers, Data scientists and Product managers who love to challenge each other but work together to build a platform to find the proverbial needle in a haystack. As an engineer on the team, you will help build systems that can process data at the scale of Walmart to derive insights in milliseconds that power lightning-fast detection of fraudsters. You will have the opportunity to work closely with our data scientists, Product Managers, business partners and systems engineers to drive the definition and implementation of platform services, applications and analytics tools for our predictive intelligence platform.

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 Lead Technical Direction
• 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 & Influence
• 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 What you’ll bring: 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 About Walmart Global Tech Imagine working in an environment where one line of code can make life easier for hundreds of millions of people. That’s what we do at Walmart Global Tech. We’re a team of software engineers, data scientists, cybersecurity expert’s and service professionals within the world’s leading retailer who make an epic impact and are at the forefront of the next retail disruption. People are why we innovate, and people power our innovations.

Benefits: Benefits: Beyond our great compensation package, you can receive incentive awards for your performance. Other great perks include 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and much more.

Equal Opportunity Employer: 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.

The above information has been designed to indicate the general nature and level of work performed in the role. It is not designed to contain or be interpreted as a comprehensive inventory of all responsibilities and qualifications required of employees assigned to this job. The full Job Description can be made available as part of the hiring process.

At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet. Health benefits include medical, vision and dental coverage. Financial benefits include 401(k), stock purchase and company-paid life insurance. Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting. Other benefits include short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more. You will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable. For information about PTO, see https://one.walmart.com/notices. Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam’s Club facilities. Programs range from high school completion to bachelor’s degrees, including English Language Learning and short-form certificates. Tuition, books, and fees are completely paid for by Walmart. Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to a specific plan or program terms. For information about benefits and eligibility, see One.Walmart. The annual salary range for this position is $143,000.00 - $286,000.00 Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include : Stock

Minimum Qualifications…

Option 1: 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.
Option 2: 7 years’ experience in software engineering or related area.

Preferred Qualifications…

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., We value candidates with a 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. The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.

Primary Location…

809 11th Ave, Sunnyvale, CA 94089-4731, United States of America

Walmart and its subsidiaries are committed to maintaining a drug-free workplace and has a no tolerance policy regarding the use of illegal drugs and alcohol on the job. This policy applies to all employees and aims to create a safe and productive work environment.