Staff, Software Engineer

Position Summary:The AdTech M&R data team is responsible for delivering reporting and measurement for Advertisers to analyze and optimize campaigns. We are a team of data developers whose strengths are: (1) building scalable data pipelines (2) exposure to machine learning techniques and data science (3) making sense of broadly defined problems through data analysis.About Team: Walmart Global TechFrom entry-level to executive positions, Walmart provides limitless opportunities for growth, and career development. Walmart started small, with a single discount store and the simple philosophy of selling more for less. Today, we are a growing technology-enabled company founded on the same values as our first store. We establish clear expectations, empower associates to manage their work, and hold ourselves and one another to a high standard. Walmart's scale enables us to have an impact. No other company has the reach of Walmart, with 2.3 million associates worldwide and over 230 million weekly customers. Walmart is reshaping retail by investing in an expanding workforce. While technology is at the heart of our digital transformation, people are the reason we succeed and the force behind our innovations. We train our team in the skillsets of the future and bring in experts like you to help us grow.What you'll do:Build data systems that ingest, model, and analyze massive flow of data from online and offline user activities, processing hundreds of millions of sales and impressions data to obtain insights and analytics related to advertising campaign performance.Develop big data applications for precise audience targeting and cutting-edge measurement for campaign reporting, leveraging the wealth of data within the Walmart ecosystem.Set up ETL jobs in Jenkins to move large volume of distributed data from various sources to secondary datacenters for business continuity and disaster recovery.Participate in small to large sized projects by reviewing project requirements into technical solutions; gather requested information; write and develop code; conduct unit testing; communicate status and issues to team members and stakeholders; collaborate with project team and cross-functional teams; troubleshoot open issues and bug-fixes; and ensure on-time delivery and hand-offs.Troubleshoot business and production issues by gathering information, engage support teams to assist in resolution of issues, formulate an action plan, perform actions as designated in plan, interpret the results to determine further action, and complete online documentation.Develop complex software features to streamline and scale batch jobs to support advertising propensity models.Design, develop, and maintain software for targeting and reporting data pipelines in Spark, Hadoop, and Map-Reduce.Develop software using object-oriented languages such as Scala and Java. Implement advertising measurement systems that leverage machine learning and statistical techniques.Use advanced big data scheduling techniques (Jenkins, Airflow) for reliable and recurrent data processing.Perform data investigations using SQL and Pig or Hive.Assist with the designs and development of systems and methods to ensure the quality for large data pipelines and guide the product through all stages of user acceptance process.What you'll bring:Experience programming in an object-oriented language (Java or Scala).Experience using Hadoop and Map Reduce in batch jobs to process large scale data.Experience in creating and maintaining data processing workflows with tools including Airflow or Oozie.Experience using Pig, Hive, or SQL to perform advanced data investigation.Experience working in AdTech with demonstrated knowledge of the AdTech business.Experience developing techniques to ascertain correctness of data processing and transformation implementations using unit, integration, and end-to-end pipeline testing.Experience designing and developing software to perform ETL operations on large datasets.About Walmart Global TechImagine 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 experts 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.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: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.Minimum Qualifications:Option 1: Bachelor's degree in computer science, computer engineering, computer information systems, software engineering, or related area and 4 years’ experience in software engineering or related area.Option 2: 6 years’ experience in software engineering or related area.Preferred Qualifications:Master’s degree in Computer Science, Computer Engineering, Computer Information Systems, Software Engineering, or related area and 2 years' experience in software engineering or related area. 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.Primary Location:640 W California Avenue, Sunnyvale, CA 94086-4828, United States of America

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