(USA) Senior, Software Engineer: Apollo GraphQL

Company : Walmart
Location : Sunnyvale, CA
Posted Date : 18 October 2025
Job Type : Full Time, Part Time
Category : Software Development
Occupation : Software Engineer
Job Details
Position Summary
Join our team as a Senior Software Engineer and help shape the future of customer payments on Walmart.com ! You\'ll design and build scalable microservices and APIs that power seamless, secure, and high-impact transactions for millions of shoppers worldwide. This is your chance to work on mission-critical systems at massive scale, driving innovation in digital payments.
What you\'ll do
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.
- Design, develop, and maintain highly scalable microservices to support secure and efficient customer payments.
- Build and optimize APIs using Node.js, Apollo GraphQL, and JavaScript , ensuring high performance, security, and reliability.
- Collaborate with cross-functional teams (product, design, and backend services) to define, design, and deliver new payment features.
- Diagnose, debug, and resolve complex technical issues efficiently to ensure a smooth payment experience for millions of customers.
- Contribute to system architecture and best practices , driving technical excellence and scalability in payment infrastructure.
What you\'ll bring:
- 5+ years of experience in software engineering, with a strong focus on scalable microservices and API development .
- 3+ years of hands-on experience with GraphQL , including schema design, resolvers, query optimization, and best practices for performance and security.
- Proficiency in Node.js and JavaScript , with experience in backend development, API design, and distributed systems.
- Strong problem-solving skills and system design experience , with the ability to build solutions that handle high-traffic payments at scale.
- A collaborative mindset , working effectively with cross-functional teams to deliver high-impact features in a fast-paced environment.
If you\'re passionate about building high-performance, secure, and scalable payment solutions, we\'d love to hear from you!
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. 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 include Walmart\'s global headquarters 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 welcoming of all people.
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.
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.
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
840 W California Ave, Sunnyvale, CA , 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.
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