Walmart's Advertising Technology data team is seeking a Software Engineer III to join their foundational data platform team for targeting and measurement systems. This role is crucial in building and maintaining the data infrastructure that powers Walmart's advertising capabilities. The position offers an opportunity to work with massive datasets and influence millions of customers' shopping experiences. As a Senior Engineer, you'll lead large-scale software projects, design distributed systems, and work with cutting-edge technologies in the big data space. The role combines technical expertise in data engineering with leadership responsibilities, including mentoring junior engineers and collaborating with cross-functional teams. The position offers competitive compensation ranging from $90,000 to $234,000 depending on location, plus benefits including health insurance, 401(k), stock purchase options, and paid time off. The role is based in either Sunnyvale, CA or Bentonville, AR, working with Walmart's advanced advertising technology stack including Hadoop, Spark, and Kafka. This is an excellent opportunity for experienced engineers looking to make a significant impact in retail technology while working with big data and distributed systems at scale.