Role summary:
The Principal Software Engineer leads the design and delivery of scalable platform capabilities, driving technical execution across multiple teams. This role applies cloud-native architecture and distributed system principles to develop AI-enhanced applications and real-time data solutions. The position requires strategic technical leadership, mentorship, and collaboration with cross-functional partners to align engineering efforts with business objectives. The engineer ensures high-quality software development lifecycle management, fosters innovation, and promotes continuous improvement while maintaining architectural standards and operational excellence in a dynamic environment.
**Immigration Sponsorship support will NOT be available for this
position**
About the team:
Walmart’s Advertising Technology group connects supplier brands with retail shoppers at an unmatched scale. This team of skilled engineers and data scientists operates in an agile environment to address complex, high-impact challenges. They manage billions of ad requests monthly through high-performance ad servers and develop intelligent data systems that ingest, model, and optimize vast data flows from online and in-store activities. Utilizing advanced machine learning and optimization algorithms, the team is committed to delivering exceptional experiences that meet the needs of customers and advertisers alike.
What you'll do:
- Lead platform engineering efforts to deliver scalable infrastructure, reusable tooling, and AI/ML frameworks aligned with strategic roadmaps.
- Architect and implement cloud-native, distributed systems ensuring high availability, scalability, and fault tolerance.
- Oversee full software development lifecycle including coding, testing, deployment, monitoring, and incident response across multiple teams.
- Integrate AI agents and intelligent applications using advanced programming languages and model-driven design principles.
- Provide technical leadership, mentorship, and promote engineering best practices to enhance system interoperability and maintainability.
- Collaborate with stakeholders to define requirements, measure success, and drive continuous improvement initiatives.
What you'll bring:
- Extensive experience in platform engineering leadership, delivering scalable infrastructure and reusable tooling aligned with strategic roadmaps.
- Deep expertise designing and scaling AdTech platforms and distributed systems leveraging Java/Spring Boot, Cassandra, Azure SQL, Kafka, Solr, Vespa, Vector DB, and Apache Airflow.
- Proven expertise in cloud-native architecture and distributed system design ensuring high availability and fault tolerance.
- Strong technical execution skills across the full software development lifecycle, including CI/CD, testing, and incident response.
- Proficiency in AI/ML integration and building intelligent software systems using languages such as Python, Java, and C++.
- Demonstrated ability to provide technical mentorship and influence architectural decisions across teams.
- Excellent collaboration and communication skills with cross-functional stakeholders.
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 expert's 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.
Flexible, hybrid work
We use a hybrid way of working with primary in office presence coupled with an optimal mix of virtual presence. We use our campuses to collaborate and be together in person, as business needs require and for
development and networking opportunities. This approach helps us make quicker decisions, remove location barriers across our global team, be more flexible in our personal lives.
Benefits:
Beyond our great compensation package, you can receive incentive awards for your performance. Other great perks include a host of best-in-class benefits maternity and parental leave, PTO, health benefits, 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 diversity- unique styles, experiences, identities, ideas and opinions – while being inclusive 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.
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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 5 years’ experience in software engineering or related area.Option 2: 7 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 3 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...1275 Crossman Ave, Sunnyvale, CA 94089-1103, United States of AmericaWalmart 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.Skills Required
- Bachelor's degree in computer science, computer engineering, computer information systems, software engineering, or related area and 5 years' experience in software engineering or related area.
- 7 years' experience in software engineering or related area (alternative to degree + 5 years).
- Extensive platform engineering leadership delivering scalable infrastructure and reusable tooling.
- Deep expertise designing and scaling AdTech platforms and distributed systems.
- Proficiency with Java and Spring Boot.
- Experience with Cassandra and Azure SQL.
- Experience with Kafka, Solr, Vespa, and Vector DB.
- Experience with Apache Airflow.
- Proficiency in AI/ML integration and building intelligent systems using Python, Java, and C++.
- Strong full software development lifecycle skills including CI/CD, testing, deployment, monitoring, and incident response.
- Demonstrated technical mentorship and ability to influence architecture across teams.
- Excellent collaboration and communication skills with cross-functional stakeholders.
- Master's degree in computer science or related area and 3 years' experience (preferred).
- Knowledge of WCAG 2.2 AA accessibility standards, assistive technologies, and accessibility best practices (preferred).
Walmart Global Tech Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Walmart Global Tech and has not been reviewed or approved by Walmart Global Tech.
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Strong & Reliable Incentives — Compensation packages typically include base pay, performance bonuses, and stock awards, with access to an employee stock purchase plan. Feedback suggests annual bonus structures and stock grants are a consistent part of total compensation in many roles.
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Retirement Support — Retirement offerings include a company 401(k) match and stock purchase options that support long‑term savings. Feedback suggests these programs are a notable strength within the overall package.
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Parental & Family Support — Family benefits feature paid parental leave and adoption assistance, alongside tax‑advantaged accounts for healthcare spending. Feedback suggests these supports contribute meaningfully to perceived total rewards value.
Walmart Global Tech Insights
What We Do
Walmart has a long history of transforming retail and using technology to deliver innovations that improve how the world shops and empower our 2.2 million associates. It began with Sam Walton and continues today with Global Tech associates working together to power Walmart and lead the next retail disruption. We’re a high-performing, primarily virtual workforce that is human-led and tech-empowered. Our world-class software engineers, data scientists and engineers, cybersecurity professionals, product managers and business service professionals work with top talent on cutting-edge technologies that create unique and innovative experiences for our associates, customers and members across Walmart, Sam’s Club and Walmart International. At Walmart Global Tech, one line of code or bold idea can make life easier for hundreds of millions of people – talk about epic impact at a global scale.
