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Senior Software Engineer

2 months ago


Sunnyvale, California, United States Walmart Full time
About the Role

We are seeking a highly skilled Senior Software Engineer to join our team at Walmart Global Tech. As a key member of our team, you will be responsible for designing, developing, and maintaining large-scale data systems that support our advertising technology platform.

Key Responsibilities
  • Design and develop complex data systems that ingest, model, and analyze massive flows of data from online and offline user activities.
  • Develop big data applications for precise audience targeting and cutting-edge measurement for campaign reporting.
  • Set up ETL jobs in Jenkins or Airflow to move large volumes of distributed data from various sources to secondary data centers for business continuity and disaster recovery.
  • Troubleshoot business and production issues by gathering information, engaging support teams, and formulating action plans.
  • Develop complex software features to streamline and scale batch jobs to support advertising propensity models.
  • Design, develop, and maintain software for the 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.
  • Apply regression and classification machine learning methods in developing measurement products.
  • Use advanced big data scheduling techniques (Jenkins, Airflow) for reliable and recurrent data processing.
  • Perform advanced data investigations using SQL and Spark or Hive.
  • Design and develop systems and methods for ensuring quality for large data pipelines and guide the product through all stages of user acceptance process.
Requirements
  • 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 Spark, Hive, or SQL to perform advanced data investigation.
  • Experience implementing statistical and machine learning methods for data classification and regression.
  • 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.
  • Experience building microservices.
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 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 train our team in the skillsets of the future and bring in experts like you to help us grow.

Benefits
  • Competitive pay and performance-based bonus awards.
  • 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and more.
  • Flexible, hybrid work environment.
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.