Principal Data Engineer

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Job Description

Like to shake things up? We do! The Advertising Team is reinventing advertising at eBay! We’re creating innovative ad-tech solutions to optimize the ad monetization and experience on eBay. Our goal is to create a valuable experience for both buyers and sellers, while also driving performance for advertisers. To that end, we are innovating rapidly in the ad-tech space and there is no shortage of new challenges for motivated individuals.

As a Principal Data Engineer, you will work closely with designers, product managers and other engineers (frontend, backend, machine learning, quality) to revolutionize the advertising space for eBay and beyond.

Read about some of our products and recent work here:


We are looking for a senior engineer / architect to lead building complex, large scale services that run machine learning models. This is a phenomenal opportunity to build the foundation of a mission critical area from grounds up.

Primary Responsibilities:

You must be very familiar with and an advocate of common Agile practices:

  • Crafting elegant technical solutions to customer problems
  • Design new experiences for eBay sellers and advertisers to promote their products, manage their advertising campaigns, and improve their sales
  • Proficient in Test Driven Development, clean code, software craftsmanship
  • Build highly available, scalable user facing applications and RESTful Public APIs
  • Develop systems using Java, Scala, Node.js
  • Learn new external and internal technologies as the need/opportunity arises
  • Operate within our internal open source community where we share a variety of projects and codebases
  • Build, test, and deploy your code in a continuous manner
  • Execute as part of a cross-functional Agile team that rapidly delivers iterative value to customers
  • Contribute to technical conversations and debates, and decide upon approaches and tools to use
  • Lead by example and share knowledge with the team

You will also be expected to:

  • Integrate closely w/ colleagues in different functional groups and remote offices
  • Promote a culture of internal open source where teams can chip in to each other's code bases regardless of organizational boundaries
  • Enjoy being part of a team of motivated, collaborative, high-achievers
  • Communicate effectively within your team and across teams.
  • Identify project risks, quantify risk/benefit relationships and provide alternative solutions as well as risk mitigation

Job Requirements:

  • BS/BA in Computer Science or related field plus 15 years work experience or MS with 10 years of relevant experience
  • Proficient with JVM languages (Java, Kotlin, Scala), Hadoop
  • Experience in building large scale Web Services and Backend Applications using Java/J2EE, RESTful Web Services, HTTP and JSON technologies
  • Experience with technologies like Hadoop, Kafka and Spark
  • Experience building back end systems that run Machine Learning based services
  • Deep understanding of design patterns, and experience working in a layered architecture
  • Mentor junior engineers

Benefits are a crucial part of your total compensation for the work you do every day. Whether you’re single, in a growing family, or nearing retirement, eBay offers a variety of comprehensive and competitive benefit programs to meet your needs. Including maternal & paternal leave, paid sabbatical, and plans to help ensure your financial security today and in the years ahead because we know feeling financially secure during your working years and through retirement is important.

Company Info.


eBay Inc. is a global commerce leader that connects millions of buyers and sellers around the world. We exist to enable economic opportunity for individuals, entrepreneurs, businesses and organizations of all sizes. Our portfolio of brands includes eBay Marketplace and eBay Classifieds Group, operating in 190 markets around the world.

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  • Location
    2025 Hamilton Avenue, San Jose, CA 95125, USA
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