USA Senior, Software Engineer - Unified Payments Platform - Walmart

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.
• 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., LangChain, CrewAI) is a bonus.
• Strong understanding of CI/CD, observability, and DevOps 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.