Principal Software Engineer

Walmart Stores SUNNYVALE, CA

About the Job

Position Description


This position is in the Walmart Performance Ads team under the Advertising Technology organization. The mission of the Advertising Technology organization is to advance Walmart eCommerce by driving higher value for our customers and vendor partners. Walmart is investing in building a world class advertising platform and the Walmart Performance Ads team is responsible for defining and performance advertising products that drive discovery, sales and profits. The team operates an end to end advertising platform that includes a scalable ad service that serves hundreds of millions of impressions each day, sophisticated ad matching algorithms, real-time reports, self-service interface for end to end program management etc.

We are a highly motivated group of Big Data Geeks, Data Scientists and Applications Engineers, working in small agile group to solve sophisticated and high impact problems. We are building smart data systems that ingest, model and analyze massive flow of data from online and offline user activity. We use cutting edge machine learning, data mining and optimization algorithms underneath it all to analyze all this data on top of Hadoop and Spark.

We are seeking talented and self-driven individuals to join the Walmart Performance Ads team. The mission of the Performance Ads team is to advance Walmart eCommerce by driving higher value for our customers and vendor partners.

In this role, you will:
• Develop highly scalable services to process millions of requests per day and solve complex software systems problems by leveraging state-of-the-art technology.
• Gain exposure to various technologies used in Advertising and E-commerce platforms.
• Work with the data scientists and product managers to carry out various experiments across different areas of the AdTech platforms to improve customer experience and ad relevance.
• Drive projects of high visibility across the organization.

Minimum Qualifications


- 5+ years experience in internet-scale distributed technologies (e.g. Elastic Search, Solr, Kafka, etc) and/or Big Data frameworks (e.g. Hadoop, Spark, Hive, Storm, etc.).
- Relevant experience with relational / non-relational databases (e.g. MySQL, Oracle, Cassandra, etc)
- Strong background in algorithms and data structures
- Expertise in one or more programming languages (e.g. Java, Scala, etc)
- Master's degree in Computer Science or equivalent experience

Additional Preferred Qualifications


- Advanced knowledge of performance, scalability and system architecture with an eye toward avoiding and reducing technical debt.
- Strong inclination towards learning and playing with the new technologies.
- Understanding of online computational advertising
- Understanding of machine learning
- Hands-on experience developing in a service-oriented architecture on a Linux environment

Company Summary


The Walmart eCommerce team is rapidly innovating to evolve and define the future state of shopping. As the world’s largest retailer, we are on a mission to help people save money and live better.  With the help of some of the brightest minds in technology, merchandising, marketing, supply chain, talent and more, we are reimagining the intersection of digital and physical shopping to help achieve that mission.

Position Summary


This position is in the Walmart Performance Ads team under the Advertising Technology organization. The mission of the Advertising Technology organization is to advance Walmart eCommerce by driving higher value for our customers and vendor partners. Walmart is investing in building a world class advertising platform and the Walmart Performance Ads team is responsible for defining and performance advertising products that drive discovery, sales and profits. The team operates an end to end advertising platform that includes a scalable ad service that serves hundreds of millions of impressions each day, sophisticated ad matching algorithms, real-time reports, self-service interface for end to end program management etc.

We are a highly motivated group of Big Data Geeks, Data Scientists and Applications Engineers, working in small agile group to solve sophisticated and high impact problems. We are building smart data systems that ingest, model and analyze massive flow of data from online and offline user activity. We use cutting edge machine learning, data mining and optimization algorithms underneath it all to analyze all this data on top of Hadoop and Spark.

We are seeking talented and self-driven individuals to join the Walmart Performance Ads team. The mission of the Performance Ads team is to advance Walmart eCommerce by driving higher value for our customers and vendor partners.

In this role, you will:
• Develop highly scalable services to process millions of requests per day and solve complex software systems problems by leveraging state-of-the-art technology.
• Gain exposure to various technologies used in Advertising and E-commerce platforms.
• Work with the data scientists and product managers to carry out various experiments across different areas of the AdTech platforms to improve customer experience and ad relevance.
• Drive projects of high visibility across the organization.