(USA) Senior, Software Engineer - job 1 of 50

Are you passionate about pioneering cutting-edge technology that can revolutionize the world of associate (employee) experiences? Do you dream of playing a technical role that will shape the future of Global People Systems?  If you possess exceptional technical expertise, you may be interested in this opportunity.   
 
Join our dynamic and forward-thinking People Technology engineering organization. As a Senior Software Engineer, you’ll spend your days translating requirements into solutions, writing code, collaborating with cross-functional teams, and providing us with the insights necessary to think beyond the status quo. You’ll oversee small project teams consisting of other engineers who will look to you as a trusted advisor, a subject matter expert who provides guidance and the right tools to get the job done. You will be part of the transformative projects and foundational improvements of Walmart's Workforce Enablement systems. 

 
What you'll do: 

• As a Senior Software Engineer, you will design and develop the of complex software changes and take on the development of exciting new features, including Agentic AI initiatives. In addition, you will partner with your senior and junior teammates throughout the software development lifecycle to cultivate a reciprocal learning environment from development to debugging and operational excellence. Provide technical leadership and use engineering best practices to initiate, plan, and execute large-scale, cross-functional, and company-wide projects. Demonstrate craftsmanship and produce high-quality software that is unit tested, code reviewed, and checked in regularly for continuous integration.
   

  Investigate and build proof-of-concept prototypes utilizing new technologies and drive their adoption within the mainstream product. Identify, leverage, and successfully evangelize opportunities to improve engineering productivity, product quality, and efficiency. Generate technical documentation and presentations to communicate architectural and design options, and educate development, product, and business teams. Manage and maintain multiple production and non-production environments, ensuring that these environments are set up with the standard automated build and release processes & deliver with quality, reliability. Build, leverage, and analyze tools, application logs, and analytics data to determine improvements to the product and engineering services. Set high standards for operational excellence and system observability.
   

  Participate in code reviews, architectural discussions, and troubleshooting sessions to ensure the highest standards of development. Drive a culture of accountability, ownership, and inclusivity within the team.

  Key Responsibilities:

  • Design and develop end-to-end LLM-integrated solutions using frameworks like LangChain, LangGraph, and AutoGen.

  • Build modular, well-structured, and configurable Python modules for scalable deployment.

  • Implement advanced techniques in LLM-based reasoning such as RAG, CoRAG, Self-Refinement, and ReACT.

  • Develop custom agent flows that interact with internal tools, APIs, and databases to automate complex tasks.

  • Design and manage orchestration pipelines for multi-agent workflows using tools like LangGraph or custom FSM frameworks.

  • Integrate with NoSQL databases (e.g., MongoDB, Redis, Cassandra) for state, memory, or knowledge base persistence.

  • Work closely with Data and Product Managers to deliver AI-powered applications with measurable impact.

  • Write clean, testable, and well-documented code following best practices in software engineering and Python development.

  • Contribute to the architecture and infrastructure of our LLM-based services ensuring performance, scalability, and resilience.

  What You'll Bring:

• • 5+ years of experience in backend software development, with strong proficiency in Python.

  • Hands-on experience with LangChain, LangGraph, or similar agent-oriented frameworks.

  • Proven track record of building and deploying LLM-integrated applications in production.

  • Deep understanding of LLM integration techniques: RAG, CoRAG, SWE, ReACT, Toolformer-style tools.

  • Experience with NoSQL databases like MongoDB, Redis, or Cassandra.

  • Solid understanding of software engineering principles: modular code design, CI/CD pipelines, configuration-driven architecture.

  • Ability to write maintainable and scalable Python code, with emphasis on code reuse and modularity.

  • Familiarity with prompt engineering and evaluation of LLM outputs for correctness and relevance.

• Good to Have:

• • Experience with OpenAI, Anthropic, Cohere, or other commercial LLM APIs.

  • Exposure to vector databases (e.g., FAISS, Weaviate, Pinecone) for retrieval-augmented generation.

  • Familiarity with FastAPI, Flask, or other Python web frameworks.

  • Knowledge of Docker, Kubernetes, and cloud services (AWS/GCP/Azure) for deploying LLM-based solutions.

  • Contributions to open-source LLM tools or agent frameworks.

  • Understanding of observability and monitoring for LLM-based systems (e.g., latency tracing, token usage, failures).

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 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.

Benefits:
Benefits: Beyond our great compensation package, you can receive incentive awards for your performance. Other great perks include 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, 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.