Principal, Software Engineer

Position: (USA) Principal, Software Engineer
Reference: R-2633246

Posted:

Location:

SUNNYVALE, CA, United States Salary: $143000 - $286000/year

Type:
Full time / Regular/Permanent Company:
Sam's Club Business Segment:
Home Office Role summary:

As a Principal Software Engineer at Walmart, you will lead the design and delivery of scalable platform capabilities, driving innovation in cloud native architectures and AI/ML integration. This role requires overseeing the full software development lifecycle across multiple teams, ensuring high availability, reliability, and performance of distributed systems. You will provide strategic technical leadership, mentor engineering teams, and collaborate with cross functional partners to translate complex business needs into effective technical solutions.

Your expertise will support Walmart’s long-term platform evolution and operational excellence in serving millions of customers and associates.

The mGPS/Compass team drives innovation in Walmart’s in-store technology by transforming indoor positioning data into precise routing solutions that enhance operational efficiency. This team addresses complex technical challenges to achieve meter-level accuracy and real time path generation, significantly improving order accuracy and saving millions of associate hours annually. Engineers collaborate on advanced algorithms and system designs, delivering impactful business results with immediate operational feedback.

The team operates in a dynamic environment, applying cloud-native architecture and AI integration to develop scalable, reliable solutions that support Walmart’s commitment to operational excellence and continuous improvement.

What you'll do:

Lead the planned decomposition of a large controller-centric Spring Boot service into well-bounded domain services, with a safe, incremental migration plan.

Lead platform engineering efforts by delivering scalable infrastructure, reusable tooling, and cloud-native architectures aligned with strategic roadmaps.

Drive full software development lifecycle management, including coding, testing, deployment, monitoring, and incident response across multiple teams.

Architect and implement AI-enhanced applications and intelligent systems supporting millions of users with real-time data processing capabilities.

Provide technical leadership and mentorship, influencing architectural decisions.

Collaborate with cross functional stakeholders to translate business needs into actionable technical requirements and measurable success metrics.

Ensure technical ownership by maintaining quality standards, resolving issues, and driving project completion.

Foster continuous improvement by integrating feedback, adopting new technologies, and enhancing processes and tools.

Own architecture for the Compass platform API design, service boundaries, caching, data stores, and resilience (multi-region active/active + DR).Design and evolve multi-tenant capabilities (tenant-aware config, maps and APIs) for new chains and formats.

Build and review backend (Java), web (React/Type Script/Node), and mobile SDK (Kotlin, Swift) code, set standards, mentor engineers, raise testing maturity.

Java 21,Spring Boot 3.5, PostgreSQL, Open Search ,Kafka , Big Query , Node.js 22 , Type Script , React 18 ,Kubernetes (WCNP) ,KITT/Looper/Concord CI/CD, Flagger canaries ,Akeyless ,Azure + GCP (multi-cloud),Looker/Tableau ,JUnit, Jest, Test containers, GraphQLDrive scale and performance work like Kafka partitioning/throughput, API latency, cache strategy, data-pipeline cost (GCP BQ optimizations)
Partner with product, vendors (positioning technology), and partner-app teams (mobile apps, supplier and associate tools) on SDK contracts, SLAs, rollout plans and incident response.

Improve operational excellence by enhancing…