Backend Software Engineer

At eBay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts.

Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work — every day. We're in this together, sustaining the future of our customers, our company, and our planet.

Join a team of passionate thinkers, innovators, and dreamers — and help us connect people and build communities to create economic opportunity for all.

About the team and the role:

Advertising is one of the fastest-growing, high-priority areas at eBay, and the Ads Platform team sits at the heart of this transformation. We build the core infrastructure that powers all of eBay’s advertising products — from Promoted Listings to the recently launched Promoted Stores. Our mission is to deliver scalable, high-performance systems that drive visibility for sellers and create engaging ad experiences for buyers.

As a Software Engineer on the Ads Platform team, you’ll help shape how eBay connects millions of buyers and sellers through advertising. This is a high-impact, full-stack/backend role where your contributions will directly influence ad delivery systems that handle billions of daily events, drive significant revenue, and enable strategic growth across eBay’s marketplace. You’ll report into a seasoned engineering manager and collaborate with product managers, data scientists, and cross-functional engineers across the globe.

What you will accomplish:

• Design and build scalable, low-latency systems that power real-time ad delivery for millions of eBay users.

• Contribute to core infrastructure for Promoted Stores, campaign management, tracking, and publisher integrations.

• Apply clean code principles and test-driven development to deliver production-quality software with high reliability.

• Collaborate across product, engineering, and platform teams to integrate seamlessly with publishing surfaces and business logic.

• Promote a culture of engineering excellence, including internal open source contributions, best practices, and code reviews.

• Grow your expertise in distributed systems, functional programming (Scala), and full-stack development through real-world learning and mentorship.

What you will bring:

• 1+ years of experience in software development, ideally in backend or full-stack roles.

• Proficiency in Java, Scala, and familiarity with functional programming concepts (e.g., Cats, Monix, ZIO a plus).

• Experience with streaming and batch technologies such as Kafka, Spark, Flink, or Hadoop.

• Exposure to web services and client technologies (Android, iOS, or web) is a strong plus.

• Solid understanding of data structures, distributed systems, and layered architecture.

• Strong communication, ownership mindset, and the ability to thrive in cross-functional, agile teams.

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