Senior Software Developer Jobs in Sunnyvale, CA

Position Summary

As a Senior Software Engineer (Backend) you are responsible for developing high performance and scalable Catalog Service that meet the needs of millions of Walmart customers. Design and develop integrations with next generation downstream application that is built largely on an event driven platform implemented via a micro-service architecture. We are looking to bring more intellectually curious engineers who are passionate about technology in general. Join the innovative Walmart Catalog team, where creativity and technological innovation drive success. We specialize in enhancing Seller and supplier experiences in setting up their catalog and managing Catalog platform. Our tech stack includes Java for backend services, providing an exciting opportunity for growth and collaboration.

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.

What you'll do:

- Design & develop highly scalable services and solve complex software systems problems by leveraging state-of-the-art technology.
- Provide technical direction, architecture leadership and expertise to the team.
- Lead by example. Show your chops as an exceptional and experienced developer.
- Drive projects of high visibility across the organization.
- Participate in medium- to large-scale, complex, cross-functional projects by reviewing project, product and business requirements; translating requirements into technical solutions; gathering requested information (for example, design documents, product requirement); designing robust and scalable architectures; writing and developing code; conducting unit testing; communicating status and issues to team members and stakeholders; collaborating with cross functional teams; troubleshooting open issues and bug-fixes; enhancing design to prevent re-occurrences of defects; ensuring on-time delivery.

What you'll bring:

- 8+ years in building highly available backend systems in Java
- Proficiency in high-throughput backend systems in Java — Spring Boot, Spring WebFlux/Reactor
- Demonstrated ability to write modular, maintainable code designed for SDK-level reuse
- Hands-on with reactive programming (Project Reactor, Reactor Kafka, Mono/Flux) and event-driven architecture — Kafka producer/consumer tuning
- Skilled in ETL workflows using Apache Spark (Scala/PySpark), Python, and SQL
- Proficient in Apache Airflow for workflow orchestration, including designing and optimizing DAGs and dependencies
- Strong experience in RESTful Microservices, including API design, development
- Hands-on experience with SQL/NoSQL databases such as Cosmos DB, Azure SQL, BigQuery (BQ), etc.
- Proficiency in working with caching technologies like Redis, Memcached, or similar systems
- Experience in event-driven architecture using tools like Kafka
- Knowledge of LLM agent development, prompt engineering, and experience fine-tuning LLMs (is good to have)
- Strong ability to write modular, maintainable, and testable code, along with expertise in writing test cases (unit, functional, and integration testing) using frameworks such as JUnit, Mockito, and Mock MVC

The above information has been designed to indicate the general nature and level of work performed in the role. It is not designed to contain or be interpreted as a comprehensive inventory of all responsibilities and qualifications required of employees assigned to this job. The full Job Description can be made available as part of the hiring process.

About Walmart Global Tech

Imagine working in an environment where one line of code can make life easier for hundreds of millions of people. That’s what we do at Walmart Global Tech. We’re a team of software engineers, data scientists, cybersecurity experts and service professionals within the world’s leading retailer who make an epic impact and are at the forefront of the next retail disruption. People are why we innovate, and people power our innovations. We are people-led and tech-empowered. We train our team in the skillsets of the future and bring in experts like you to help us grow. We have roles for those chasing their first opportunity as well as those looking for the opportunity that will define their career. Here, you can kickstart a great career in tech, gain new skills and experience for virtually every industry, or leverage your expertise to innovate at scale, impact millions and reimagine the future of retail. Walmart’s culture is a competitive advantage, and it’s fostered by being together. Working together in person allows us to collaborate, align quickly and innovate with greater speed. We use our campuses to create purposeful connection rooted in deepening understanding and investing in the development of our associates.

Our hubs: Walmart is a global company with offices across the United States and around the world. Our global headquarters is in Bentonville, Arkansas, with primary hubs in the San Francisco Bay area and New York/New Jersey.

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.

Equal Opportunity Employer:

Walmart, Inc. is an Equal Opportunity Employer – By Choice. We believe we are best equipped to help our associates, customers, and the communities we serve live better when we really know them. That means understanding, respecting, and valuing unique styles, experiences, identities, ideas, and opinions – while being inclusive of all people.

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.

The annual salary range for this position is $117,000.00 - $234,000.00. Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include:
- Stock

Minimum Qualifications

Outlined below are the required minimum qualifications for this position. If none are listed, there are no minimum qualifications.
Option 1: Bachelor's degree in computer science, computer engineering, computer information systems, software engineering, or related area and 3 years’ experience in software engineering or related area.
Option 2: 5 years’ experience in software engineering or related area.

Preferred Qualifications

Outlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications.
Master’s degree in Computer Science, Computer Engineering, Computer Information Systems, Software Engineering, or related area and 1 year's 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

1375 Crossman Ave, Sunnyvale, CA 94089-1114, 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.