Principal, Software Engineer

Principal Software Engineer

We are seeking an experienced Principal Software Engineer with deep expertise in both backend and frontend technologies, and a strong background in agentic frameworks and Gen AI. This hands-on role requires exceptional coding skills, architectural vision, and the ability to mentor engineers. You will define and maintain technical architecture, drive agentic adoption, and ensure scalability and alignment with business goals.

Marketplace Engineering team is at the forefront of building core platforms and services to enable Walmart to deliver vast selection at competitive prices and with best-in-class customer experience by enabling third-party sellers to the marketplace platform, sell and manage their products to our customers on walmart.com. We do this by managing the entire seller lifecycle, monitoring customer experience, and deliver high-value insights to our sellers to help them plan their assortment, price, inventory. The team also actively collaborates with partner platform teams to ensure we continue to deliver the best experience to our sellers and our customers.

Immigration sponsorship support is not available for this position.

• Guide and mentor a team of engineers, conducting code reviews and leading design discussions to ensure engineering best practices.

• Act as a technical authority, providing direction and expertise in backend, frontend, and agentic technologies.

• Drive the adoption of coding standards, design patterns, development best practices, and agentic frameworks.

• Lead the creation and maintenance of our technical architecture, aligning it with business goals, scalability, and agentic adoption.

• Architect complex software systems (data/backend), ensuring performance, security, and scalability needs are met.

• Consistently produce high-quality software with a focus on unit testing, regular code reviews, and continuous integration.

• Develop comprehensive technical documentation and presentations to communicate architectural decisions and agentic design options.

• Ensure documentation aligns with project scopes, milestones, and deliverables.

• Promote and enforce technical standards across the organization to achieve concrete outcomes and drive engineering excellence.

• Foster a culture of learning and innovation through hands-on technical guidance and mentorship.

• Lead the discovery phase of major projects, ensuring the design aligns with business goals and technical requirements.

• Collaborate with cross-functional teams to define project scopes and milestones.

• Collaborate closely with Product Management, UX/UI, Quality Assurance, and DevOps teams.

• Communicate complex technical concepts effectively to both technical and non-technical stakeholders.

• Stay at the forefront of technological advancements, especially in agentic frameworks and Gen AI, conducting research to identify emerging tools and methodologies.

• At least 7 years of experience in software development, focusing on architecting and building large-scale distributed systems with 99.99% uptime.

• Experience in multiple stack technologies Java, Spring boot, etc.

• Proven experience in utilizing copilot, agentic frameworks, and constructing MCP servers.

• Expertise in developing Large Language Models (LLMs) and generative AI solutions.

• Experience in microservices-oriented architecture and extensible REST and GraphQL. Exposure to Python and ML is a plus.

• Proficiency in Backend technologies (API development, GQL, Node.js), and Frontend technologies (ReactJs/Redux, JavaScript, AJAX, HTML5, CSS3).

• Understanding of SaaS or PaaS or IaaS industry with hands-on experience with public or private cloud offerings such as Azure or Google Cloud Platform.

• Experience and fluency with relational/non-relational databases (e.g. MySQL, Oracle, Cassandra, Cosmos, etc.)

• Experience using any of the automation toolset like Appium, Selenium, Jira, Rest Assured, AssetJ, Gatling, etc. or equivalent tools.

• Well versed in TDD, BDD methodologies and the enabling tools and technologies - JUnit, TestNG, Cucumber, CI/CD etc. Automated deployment experience is a plus.

• Advanced knowledge of complex software design, cloud application development, event-driven architectures, distributed system design, design patterns, data structures, Cloud Cost-optimization, and algorithms.

• Excellent technical debugging and production support skills.

• Strong decision-making skills with the ability to balance conflicting interests in a complex and fast-paced environment.

• Passion for agentic adoption and driving innovation in engineering practices.

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.

Beyond competitive pay, you can receive incentive awards for your performance. Other great benefits include a 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, flexible working hours, and more.

We are reimagining the tech workplace by making a permanent transition to virtual work for most of our team. Of course, being together in person is an important part of our culture and shared success. We’ll collaborate in person at a regular cadence and with purpose.

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.

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.

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 $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 5 years’ experience in software engineering or related area. Option 2: 7 years’ experience in software engineering or related area.

Preferred Qualifications...

Master’s degree in Computer Science or related field and 4 years’ experience in software engineering or related field.

Primary Location...

1395 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.