(USA) Senior, Software Engineer - Unified Payments Platform

About the position

As a Senior Software Engineer, 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.

Responsibilities

• 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.

Requirements

• 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).
• Strong understanding of CI/CD, observability, and DevOps practices.
• Excellent problem-solving and communication skills.

Nice-to-haves

• Exposure to LLMs, prompt engineering, or AI/ML tools is a plus.
• Familiarity with agentic frameworks (e.g., LangChain, CrewAI) is a bonus.
• 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.

Benefits

• 401(k) match
• Stock purchase plan
• Paid maternity and parental leave
• PTO
• Multiple health plans
• Performance-based bonus awards
• Short-term and long-term disability
• Company discounts
• Military Leave Pay
• Adoption and surrogacy expense reimbursement
• Live Better U education benefit program