Principal, Software Engineer

About the role

We are seeking an exceptional Principal Engineer to lead the design and delivery of highly scalable, distributed systems powering Walmart's Marketplace Trust platform. As a technical anchor for the team, you will drive architectural decisions, set engineering standards, and build innovative, data-driven platforms that enable associates to effectively support sellers and maintain the integrity of our Marketplace ecosystem.

What you'll do

• Architecture & System Design
• Lead end-to-end technical design for complex initiatives involving API contracts, UI interfaces, data models, distributed system topologies, and cross-cutting concerns
• Drive platform standardization by defining and documenting reference architectures, design patterns, and implementation guardrails that teams adopt
• Evaluate and select technologies, frameworks, and cloud-native patterns with a clear-eyed understanding of trade-offs at Walmart's operational scale
• Author and review RFCs and architecture decision records (ADRs) that become the technical canon for the platform

What you need

• 14–25 years in software engineering
• Data structures
• Java
• Python
• C++
• C#
• AWS
• Any graduate

Good to have

• Go
• Microservices
• Kubernetes
• Kafka
• System design
• Git