Senior Data Engineer

Walmart•Sunnyvale, CA

2d•$117,000 - $234,000•Onsite

About The Position

This role focuses on designing, building, testing, and deploying scalable, intelligent data solutions to support millions of Sam’s Club customers. A key aspect of this position is laying the groundwork for Agentic AI systems that consume and act on this data. The Senior Data Engineer will partner with engineering, AI/ML, and product teams to ensure data services are discoverable, trustworthy, and consumable by next-gen AI agents and LLM-based systems. Collaboration across Sam’s Club engineering teams is essential to contribute to a data-first, agent-aware architecture and foster a culture of innovation around intelligent automation. The role involves engaging with Product Management and Business teams to prioritize data products that will drive autonomous decision-making and context-rich recommendations. Building features for seamless integration between structured/unstructured data and downstream AI agents is crucial for enabling smarter responses, faster insights, and automation. Deployment and monitoring of products on cloud platforms with agent observability, telemetry, and auditability in mind are key responsibilities. Additionally, the role requires developing and implementing best-in-class data health monitoring, traceability, and context enrichment processes to ensure data used by agents is reliable and governed. The Senior Data Engineer will lead technical solutioning for full-lifecycle projects, with a focus on how data will power autonomous workflows, co-pilots, and multi-agent systems.

Requirements

4–6 years of experience in Big Data development with a focus on scalable, fault-tolerant architectures.
2–3 years of hands-on experience with cloud platforms such as GCP or Azure, including services like BigQuery, Dataflow, Pub/Sub, or equivalent.
Strong foundation in data engineering best practices and experience building complex data pipelines optimized for agent consumption.
Experience designing and implementing semantic layers or knowledge graphs that could power data-aware AI agents.
Proven experience in data modeling and architecture, with awareness of how data structures affect retrieval quality and contextual relevance for agents.
Understanding of data governance, including quality, access control, and lineage—especially in the context of agent auditability and trust.
Experience writing clean, testable code in Python, Java, or Scala; experience with PySpark/Spark for distributed data processing.
Demonstrated ability to write optimized, scalable SQL and to work with large datasets across cloud-native and open-source platforms.
Familiarity with tools like Kafka, Spark Streaming, Druid, and Presto, and how they interact in real-time or hybrid data systems.
Solid software engineering experience across backend and frontend development.
Advanced experience with Java and Spring Boot, along with strong experience using modern frontend frameworks such as React, Angular, or Vue.js.
Experience working with SQL (Azure SQL) and NoSQL (Cosmos, Cassandra, MongoDB) databases in both backend services and Full Stack systems.
Hands-on experience with Kafka, Docker/Kubernetes, and cloud platforms such as Azure, and GCP.
A strong understanding of DevOps principles, CI/CD pipelines, system observability, and deployment patterns for applications with both frontend and backend components.
A demonstrated ability to design and maintain scalable, reliable, high-performing Full Stack applications.
Success building enterprise-level systems that include both user-facing interfaces and backend services.
Strong experience with API design, performance optimization, and scalable solution development across the full stack.
Option 1: Bachelor’s degree in Computer Science and 3 years' experience in software engineering or related field.
Option 2: 5 years’ experience in software engineering or related field.
Option 3: Master's degree in Computer Science and 1 year’s experience in software engineering or related field.
2 years' experience in data engineering, database engineering, business intelligence, or business analytics.

Nice To Haves

Exposure to LLM-driven workflows, prompt templating, or orchestration tools (e.g., LangChain, LlamaIndex, CrewAI) is beneficial but not required.
Data engineering, database engineering, business intelligence, or business analytics, ETL tools and working with large data sets in the cloud, Master’s degree in Computer Science or related field and 3 years' experience in software engineering
We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly. The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.

Responsibilities

Design, build, test, and deploy scalable, intelligent data solutions that support millions of Sam’s Club customers—while laying the groundwork for Agentic AI systems that consume and act on this data.
Partner with engineering, AI/ML, and product teams to ensure data services are discoverable, trustworthy, and consumable by next-gen AI agents and LLM-based systems.
Collaborate across Sam’s Club engineering teams to contribute to a data-first, agent-aware architecture and foster a culture of innovation around intelligent automation.
Engage with Product Management and Business teams to prioritize data products that will drive autonomous decision-making and context-rich recommendations.
Build features that enable seamless integration between structured/unstructured data and downstream AI agents, enabling smarter responses, faster insights, and automation.
Deploy and monitor products on cloud platforms with agent observability, telemetry, and auditability in mind.
Develop and implement best-in-class data health monitoring, traceability, and context enrichment processes to ensure data used by agents is reliable and governed.
Lead technical solutioning for full-lifecycle projects, with an eye on how data will power autonomous workflows, co-pilots, and multi-agent systems.

Benefits

Competitive pay
Performance-based bonus awards
Medical coverage
Vision coverage
Dental coverage
401(k)
Stock purchase
Company-paid life insurance
PTO (including sick leave)
Parental leave
Family care leave
Bereavement
Jury duty
Voting leave
Short-term disability
Long-term disability
Company discounts
Military Leave Pay
Adoption and surrogacy expense reimbursement
PPTO that can be used for vacation, sick leave, holidays, or other purposes
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.