Staff, Software Engineer

Walmart•Sunnyvale, CA

About The Position

Walmart Marketplace is one of the fastest-growing eCommerce platforms, enabling third-party sellers to reach millions of customers. As a Staff Software Engineer, you will play a critical role in building scalable, high-performance systems that power seller onboarding, catalog, payments, compliance, and marketplace operations. This role requires strong hands-on engineering, system design expertise, and cross-team technical leadership. About Team: Our team works closely with our US stores and eCommerce business to better serve customers by empowering team members, stores, and merchants with technological innovation. From groceries and entertainment to sporting goods and crafts, Walmart U.S. offers an extensive selection that our customers value, whether they shop online at Walmart.com, through one of our mobile apps, or in-store. Focus areas include customers, stores and employees, in-store service, merchant tools, merchant data science, and search and personalization.

Requirements

8+ years of software engineering experience.
Strong expertise in Java (concurrency, multithreading, JVM internals).
Deep experience building microservices using Spring Boot.
Strong React experience (state management, performance optimization, component design).
Hands-on experience with: Cassandra (data modeling, partition strategies, performance tuning) Kafka (producers, consumers, schema evolution, scaling)
Experience designing distributed systems at scale.
Strong understanding of: CAP theorem Event-driven systems Idempotency & eventual consistency API versioning Caching strategies
Experience with CI/CD and cloud-native systems (Kubernetes preferred).
Own architecture across multiple services.
Influence engineering standards.
Drive cross-team initiatives.
Identify scalability bottlenecks before they occur.
Act as a technical multiplier for the team.
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.
6 years’ experience in software engineering or related area.

Nice To Haves

Marketplace / eCommerce domain experience.
Experience with payment systems or seller platforms.
Experience handling high QPS systems.
Experience migrating monolith → microservices.
Knowledge of GraphQL.
Exposure to distributed tracing and observability tools.
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.

Responsibilities

Lead design and development of scalable distributed systems serving millions of sellers and customers.
Build full-stack solutions using: Backend: Java (Spring Boot), REST/gRPC APIs Frontend: React (modern hooks-based architecture) Data: Cassandra (NoSQL), relational DBs where applicable Streaming: Kafka for event-driven architecture
Design event-driven, asynchronous systems using Kafka.
Architect highly available, fault-tolerant systems with strong observability.
Improve performance, reliability, and scalability of Marketplace services.
Mentor senior and mid-level engineers.
Drive technical roadmap and long-term architecture decisions.
Collaborate with Product, Data, Payments, Risk, and Infrastructure teams.
Lead production readiness, incident resolution, and postmortems.

Benefits

Beyond our great compensation package, you can receive incentive awards for your performance.
Other great perks include 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and much more.
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.
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.