Staff, Software Engineer - GenAi

Walmart; Sunnyvale (CA); On-site; USD 143,000 - 286,000; Full time

Benefits offered by this job

Health benefits

401(k) and stock purchase program

Paid time off and family leave

Job summary

Walmart is hiring a Staff Software Engineer to pioneer GenAI integration into production e‑commerce systems. You will shape AI-driven shopping experiences, architect scalable frontend/backend solutions, and influence architectures across teams.

You will lead development of AI-infused features with React UIs, manage state with Redux and React Query, and build GraphQL APIs as the backbone for LLM-powered services. A strong JavaScript foundation and production AI experience are essential.

Qualifications

• 10+ years of software engineering experience.
• Proven track record shipping distributed systems in Java.
• Hands-on experience shipping GenAI or LLM-powered features/services.
• Strong experience designing APIs and service architectures integrating AI/ML components.
• Deep expertise in modern JavaScript ecosystems (React, Node.js, GraphQL) and performance optimization.
• Demonstrated ability to influence technical direction without direct authority.

Responsibilities

• Define and drive technical strategy for GenAI-powered experiences—architect scalable frontend/backend solutions.
• Lead development of AI-infused features using React UIs and intelligent components.
• Manage state with Redux and React Query; build GraphQL APIs for LLM-powered services.
• Ship GenAI/LLM features at massive scale, optimize token costs, latency, and safety.
• Refactor and evolve codebases to be modular and maintainable for future AI innovations.
• Collaborate cross-functionally with product, design, backend, and AI research teams.
• Build internal AI best practices—tooling, evaluation frameworks, and coding standards.
• Mentor engineers, lead code reviews, and drive developer productivity.

Skills

JavaScript

Node.js

GraphQL

GenAI

React

Code quality

Education

Bachelor's degree in CS

Master's degree (preferred)

Tools

React

Node.js

Docker

Kubernetes

NX

Job description

Position Summary…

What you’ll do…

We’re hiring a Staff Software Engineer to pioneer this frontier—not building foundation models from scratch, but expertly integrating GenAI and LLMs into production e-commerce systems that scale tobillions of interactions. If you’re passionate about transforming cutting‑edge AI from prototypes into real‑world impact, influencing architectures across teams, and shipping features that redefine global shopping—let’s connect.

About You

• You live for code that drives real impact. You thrive in JavaScript, Node.js, and GraphQL, embracing JS’s quirks while crafting clean, functional, and shippable masterpieces. But now, you’re thrilled to overlay GenAI —building intelligent frontends and services that pulse with life.
• You obsess over AI-powered UX that wows. You don’t just code pixels; you design experiences where AI anticipates, delights, and empowers users —fusing creativity, empathy, and technical precision.
• You’re a relentless learner, diving deep into emerging tech like LLMs, agents, RAG, and evaluation frameworks, and turning research into production magic—whether orchestrating frontends, integrating backends, or creating full‑stack AI flows.
• You master scale with finesse: Handling performance on unpredictable networks, A/B testing AI variants, implementing safety/quality guardrails, and navigating rapid ecosystem shifts—all while shipping fast and boldly.
• You amplify teams: Mentoring peers, building shared AI tooling, contributing to open‑source where it fits, and elevating everyone in the GenAI era. What You’ll Do: As aStaff Software EngineerinWalmart International, you’ll shape AI-driven shopping across diverse markets:
• Define and drive technical strategy for GenAI‑powered experiences —architect scalable frontend/backend solutions that integrate LLMs intelligently, ensuring rock‑solid code quality, performance, security, and observability.
• Lead development of AI‑infused features —craft React UIs with intelligent components, manage state in dynamic AI contexts ( Redux + React Query ), and build efficient GraphQL APIs as the backbone for LLM‑powered services.
• Ship and optimize GenAI/LLM features at massive scale —design APIs and service architectures that seamlessly blend AI/ML components, manage token costs, latency, and safety, and deliver measurable delight to millions.
• Refactor and evolve codebases —making them modular, maintainable, and primed for the next wave of AI innovation.
• Collaborate cross‑functionally—with product, design, UX, backend, and AI research teams—to craft cohesive, magical customer experiences.
• Build internal AI best practices—create reusable tooling, evaluation frameworks, coding standards, and documentation to accelerate the entire organization.
• Mentor and influence—lead code reviews, guide engineers, drive developer productivity initiatives, and shape technical direction through expertise, collaboration, and vision.
• Push boundaries—experiment with emerging GenAI techniques, share insights internally (and externally when possible), and own large‑scale projects impacting global e‑commerce daily.

What You’ll Bring:

• 10+ years of software engineering experience building and shipping large‑scale, production systems.
• Proven track record shipping distributed systems in Java (or equivalent high‑scale languages).
• Hands‑on experience shipping GenAI or LLM‑powered features/services as part of larger production systems.
• Strong experience designing APIs and service architectures that integrate with AI/ML components.
• Deep expertise in modern JavaScript ecosystems ( React, Node.js, GraphQL ) and performance optimization, testing, CI/CD.
• Demonstrated ability to influence technical direction without direct authority—through expertise, collaboration, and vision.

Preferred Qualifications

• Expertise with GenAI tools/patterns (e.g., RAG, agents, prompt orchestration, evaluation pipelines ).
• Experience operationalizing LLM evaluation frameworks —including offline benchmarks, automated + human review loops, production monitoring for quality, safety, and business impact (nice to have, but highly valued).
• Familiarity with cloud platforms ( AWS/GCP/Azure ), containerization ( Docker/Kubernetes ), and microfrontends/monorepos ( Nx ).
• Track record in Agile environments with excellent communication skills. At Walmart, we offer competitive pay as well as performance‑based bonus awards and other great benefits for a happier mind, body, and wallet. Health benefits include medical, vision and dental coverage. Financial benefits include 401(k), stock purchase and company‑paid life insurance. Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting. Other benefits include short‑term and long‑term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more. You will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable. For information about PTO, see https://one.walmart.com/notices. Live Better U is a Walmart‑paid education benefit program for full‑time and part‑time associates in Walmart and Sam’s Club facilities. Programs range from high school completion to bachelor’s degrees, including English Language Learning and short‑form certificates. Tuition, books, and fees are completely paid for by Walmart. Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to a specific plan or program terms. For information about benefits and eligibility, see One.Walmart. The annual salary range for this position is $143,000.00 - $286,000.00 Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include :
• Stock

Minimum Qualifications…

Option 1: Bachelor’s degree in computer science, computer engineering, computer information systems, software engineering, or related area and 4 years’ experience in software engineering or related area.
Option 2: 6 years’ experience in software engineering or related area.

Preferred Qualifications…

Master’s degree in Computer Science, Computer Engineering, Computer Information Systems, Software Engineering, or related area and 2 years’ experience in software engineering or related area, We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly. The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.

Primary Location…

815 Eleventh Ave, Sunnyvale, CA 94089-4731, United States of America

Walmart and its subsidiaries are committed to maintaining a drug‑free workplace and has a no tolerance policy regarding the use of illegal drugs and alcohol on the job. This policy applies to all employees and aims to create a safe and productive work environment.