(USA) Software Engineer III

About the Role

As a Software Engineer III at Walmart, you will design, build, and scale high-impact systems across backend services, automation frameworks, and GenAI-powered engineering tools. You will work across complex distributed systems, native mobile and web automation, and AI-driven workflows that accelerate engineering productivity across Walmart’s global eCommerce and Store ecosystems. This role is ideal for engineers who thrive in fast-paced, cross-functional environments and enjoy solving deep technical problems with high ownership.

What You Will Do

• GenAI Engineering
• Build and integrate AI-powered agents, workflows, and automation systems using modern GenAI frameworks and APIs.
• Develop intelligent tools that improve engineering productivity, defect detection, and operational efficiency.
• Partner with engineering, product, and platform teams to scale GenAI adoption across the organization.
• Backend Engineering & API Development
• Design, develop, and maintain high-scale backend services, REST APIs, and automation pipelines.
• Build scripts, tools, and services that improve engineering efficiency and reduce manual effort.
• Ensure backend systems meet availability, scalability, performance, and security requirements.
• Integrate telemetry, monitoring, and CI/CD best practices into backend services.
• Quality Engineering & Automation
• Build and maintain end-to-end automation frameworks for backend, web, and native mobile platforms.
• Write and automate test plans, test cases, and regression suites for large-scale eCommerce applications.
• Execute functional, integration, regression, and performance testing across platforms.
• Troubleshoot automation failures and collaborate with cross-functional teams to resolve issues.
• Improve and optimize the software development lifecycle through automation and tooling.
• Program Monitoring & Quality Governance
• Track program metrics, report progress, and ensure adherence to milestones and quality standards.
• Perform root-cause analysis, defect management, and regression testing.
• Drive continuous improvement across engineering processes, tools, and automation pipelines.
• DevOps & Operational Excellence
• Monitor application performance, logs, telemetry, and system health.
• Perform maintenance, debugging, and re-engineering activities across backend and QE systems.
• Evaluate change requests and ensure compliance with security, quality, and operational standards.

Minimum Qualifications

• 5+ years of experience in backend engineering, automation, or quality engineering.
• Strong experience with Node.js, JavaScript, Python, or similar languages.
• Hands-on experience with REST APIs, distributed systems, and backend automation.
• Experience with mobile/web automation frameworks (Appium, TestCafe, XCUI Test, Espresso).
• Experience with CI/CD pipelines, Git, and modern DevOps tooling.
• Strong understanding of system integration, debugging, and performance optimization.
• Bachelor’s or master’s degree in computer science or related field.
• Excellent communication, collaboration, and problem-solving skills.

Preferred Qualifications

• Experience building or integrating GenAI-powered applications, agents, or workflows.
• Experience designing automation frameworks for Native, Web, or Backend platforms.
• Experience with large-scale eCommerce, retail, or customer-facing systems.
• Strong understanding of quality engineering principles, test strategy, and defect management.
• Ability to navigate and influence large cross-functional engineering teams.