GenAI-Driven Backend Engineer III | Sunnyvale

Walmart Global Tech; Sunnyvale (CA); On-site; USD 117,000 - 234,000; Full time

Benefits offered by this job

401(k) match

Stock purchase plan

Paid maternity and parental leave

PTO

Job summary

Walmart Global Tech in Sunnyvale, CA is seeking a Software Engineer III to design, build, and scale high-impact systems across backend services, automation, and GenAI-powered tools. This onsite role emphasizes ownership, cross‑functional collaboration, and performance.

You will work with Java/Python, REST/GraphQL, and automation frameworks to improve engineering productivity, reliability, and security at scale across Walmart’s global supply chain ecosystems.

Qualifications

• 5+ years of experience in Full stack engineering, automation, or quality engineering.
• Bachelor’s or master’s degree in computer science or related field.
• Strong experience with Java and Python, or similar languages.
• Hands-on experience with REST/GraphQL APIs, distributed systems, and backend automation with RestAssured.
• Experience with mobile/web automation frameworks (Appium, XCUI Test, Selenium, Playwright).
• Strong working knowledge of SQL and No-SQL persistence approaches.
• Strong understanding of system integration, debugging, and performance optimization.
• Excellent communication, collaboration, and problem-solving skills.

Responsibilities

• 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.
• 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.
• 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 Warehouse Management/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.
• 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.

Skills

Java

Python

REST/GraphQL APIs

Distributed systems

Mobile/web automation

SQL/No-SQL

Communication

Education

Bachelor’s or Master’s degree in computer science or related field

Tools

Appium

XCUI Test

Selenium

Playwright

RestAssured

Job description

Walmart Global Tech in Sunnyvale, CA is seeking a Software Engineer III to design, build, and scale high-impact systems across backend services, automation, and GenAI-powered tools. This onsite role emphasizes ownership, cross‑functional collaboration, and performance.

You will work with Java/Python, REST/GraphQL, and automation frameworks to improve engineering productivity, reliability, and security at scale across Walmart’s global supply chain ecosystems.