Staff Backend Engineer

Requirements:

• Strong experience with Java/J2EE (required) and familiarity with Scala (preferred)
• Experience working with SQL and NoSQL databases, and data formats such as JSON and XML
• Familiarity with frameworks such as Spring MVC and building RESTful web services
• Experience designing systems that handle large volumes of events using event-driven architecture
• Understanding of core computer science concepts such as data structures and algorithms
• Exposure to JavaScript, Node.js, TypeScript, or React is a plus
• Degree in Computer Science or a related field, and 5+ years of practical experience
• Ability to learn new technologies, contribute to shared codebases, and collaborate effectively within a team environment

What you'll be doing:

• Build scalable, highly available RESTful APIs and event-driven systems to support advertising products
• Design and deliver new experiences that help sellers and advertisers promote products and manage campaigns
• Collaborate with cross-functional teams (frontend, backend, ML, product, design, QA) to deliver end-to-end solutions
• Continuously ship code through testing and deployment pipelines, improving reliability and performance
• Contribute to shared codebases within the internal open source ecosystem
• Participate in technical discussions, influencing system design and technology choices
• Improve development efficiency and code quality using AI-assisted tools

Perks and benefits:

• eBay is an equal opportunity employer with inclusive policies
• Opportunity to work on ad-tech solutions that impact the marketplace performance
• Collaborative work environment with diverse teams
• Opportunity to build systems powering ad products and contribute to user experience
• Chance to participate in technical discussions and influence system design