Senior, Software Engineer

Overview

Position Summary... What you’ll do... About the Team:
The Unified Payments team is building a next-generation platform to handle all payment processing across Walmart’s physical and digital channels. The platform is being re-architected from a legacy mainframe to a modern, cloud-native solution. Immigrations Sponsorship support will NOT be available for this position.

You’ll play a critical role in designing, developing, and delivering scalable solutions for Walmart’s Unified Payments Platform. You’ll work closely with Staff Engineers and cross-functional teams to build cloud-native systems that power billions of transactions. You’ll also begin to explore and apply AI technologies, including Large Language Models (LLMs) and agentic tools, to enhance system intelligence and developer productivity.

• Translate complex business requirements into scalable, maintainable software solutions.
• Design and implement microservices using Java, Spring Boot, and Kubernetes in a cloud-native environment.
• Collaborate with Staff Engineers and Architects to align on technical direction and best practices.
• Contribute to the integration of LLMs and AI agents into internal tools and services to improve automation and decision-making.
• Participate in code reviews, design discussions, and mentoring of junior engineers.
• Troubleshoot production issues, perform root cause analysis, and implement long-term fixes.
• Continuously improve system performance, observability, and reliability.

• You are a strong backend engineer with a passion for clean code, scalable systems, and continuous learning.
• You’re curious about AI and LLMs, and eager to explore how they can be applied to real-world engineering problems.
• You enjoy working in a collaborative environment and are ready to take on increasing leadership responsibilities.

• 5–8 years of experience in software engineering, with a focus on backend systems.
• Proficiency in Java, Spring Boot, and microservices architecture.
• Experience with Kubernetes, Helm, and cloud platforms (GCP preferred).
• Exposure to LLMs, prompt engineering, or AI/ML tools is a plus.
• Familiarity with agentic frameworks (e.g., Lang Chain, CrewAI) is a bonus.
• Strong understanding of CI/CD, observability, and Dev Ops practices.
• Excellent problem-solving and communication skills.
• Experience modernizing legacy systems or working on payment platforms.
• Contributions to internal tools or AI-driven developer productivity initiatives.
• Passion for mentoring and growing as a technical leader.

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.

Flexible, hybrid work:
We use a hybrid way of working that is primarily in office coupled with virtual when not onsite. Our campuses serve as a hub to enhance collaboration, bring us together for purpose and deliver on business needs. This approach helps us make quicker decisions, remove location barriers across our global team and be more flexible in our personal lives.

At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits. 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,…