Senior, Software Engineer

We are seeking a Senior Full Stack Software Engineer with strong experience building high‑scale distributed systems using Java, Rust, and Node.js, and modern front‑end development skills. In this role you will contribute to evolving and operating the Marketplace API Gateway, help design and build the Marketplace Graph

QL (mGQL) experience‑centric gateway, and work on enhancing  and extending the MCP (Modal Context Protocol) gateway to enable agentic integrations within the Marketplace domain.

• Design, build, and evolve high‑scale distributed services that power the Marketplace API Gateway supporting critical seller and partner traffic.
• Lead the development of the mGQL (Marketplace Graph
  
  QL) gateway, including schema design, routing logic, federation strategy, and performance optimization.
• Extend and enhance the MCP (Modal Context Protocol) gateway to enable agentic workflows and context‑aware integrations across Marketplace domain systems.
• Own end‑to‑end lifecycle of backend services from design, implementation, testing, deployment, monitoring, and reliability.
• Implement and drive best practices for resiliency, observability, rate limiting, quotas, latency reduction, SLAs, and fault isolation across gateway platforms.
• Build seamless, intuitive developer experiences through , including onboarding flows, documentation pipelines, SDK integrations, and developer tooling.
• Partner closely with product, content, and platform teams to ensure Marketplace APIs are discoverable, consistent, secure, and easy to integrate.
• Champion and drive improvements in API versioning, schema governance, security standards, and public integration patterns to elevate developer experience.
• Contribute to the architectural roadmap for agentic systems, supporting autonomous workflows, intelligent routing, and context‑aware data flows.
• Influence platform‑wide patterns, protocols, and standards to ensure long‑term scalability, maintainability, and evolution.
• Develop performant UI surfaces and internal tools using modern front‑end frameworks (React/Type Script preferred).
• Build and optimize Node.js, Java, or Rust‑based services supporting developer platforms and orchestration layers.
• Integrate UI, API, and backend systems to deliver cohesive, experience‑centric platform capabilities.

• Strong experience designing and operating large‑scale distributed systems and API gateway platforms.
• Deep expertise in Graph
  
  QL, including schema design, federation, and performance optimization.
• Solid understanding of backend service design, reliability engineering, observability, and fault‑tolerant architectures.
• Experience building developer platforms, public APIs, and tooling with a strong focus on developer experience (DX).
• Working knowledge of modern protocols, API contracts, and platform governance practices.
• Familiarity with agentic systems, autonomous workflows, or emerging middleware patterns.
• Proficiency in one or more backend languages such as Node.js, Java, or Rust.
• Hands‑on experience with modern front‑end frameworks (React/Type Script preferred).
• Ability to collaborate cross‑functionally and influence architectural decisions across multiple teams.
• A developer‑first mindset, with a passion for designing intuitive, scalable, and future‑ready platforms.

Benefits include a competitive compensation package, performance‑based bonus awards, 401(k) match, stock purchase plan, paid parental leave, PTO, multiple health plans, and other perks. Additional benefits and eligibility details are provided during the hiring process.

Walmart, Inc. is an Equal Opportunity Employer – By Choice. We are committed to a diverse and inclusive workplace and do not discriminate based on race, color, religion, sex, gender identity, sexual orientation, national origin, disability, or any other protected characteristic.

• Option 1:
  Bachelor's degree in computer science, computer engineering, computer information systems, software engineering, or related field, and 3 years’ experience in software engineering or related area.
• Option 2:
  Five years’ experience in software engineering or related area.

• Master’s degree in Computer Science or related area and 1 year’s experience.
• Experience in creating inclusive digital experiences, understanding WCAG 2.2 AA standards, assistive technologies, and integrating digital accessibility.
• Knowledge of accessibility best practices and Walmart’s accessibility standards and guidelines.

1375 Crossman Ave, Sunnyvale, CA , United States of America