Full Stack Software Engineer, Ads

Requirements

• 4+ years of software development experience with strong computer science fundamentals
• Proficiency in Java and/or Scala (or a willingness to learn Scala); experience with functional libraries like Cats, ZIO, or Monix is a plus
• Experience building and maintaining backend services in a distributed systems environment; knowledge of Spring Framework and REST APIs
• Full stack capabilities including modern JavaScript (React), HTML/CSS, and Node.js
• Familiarity with databases (e.g., MySQL, Postgres, MongoDB) and streaming/messaging technologies (e.g., Kafka, Flink, RabbitMQ)
• A collaborative mindset and enthusiasm for agile development, code quality, and solving tough problems that deliver real business impact

What you'll be doing

• Build high-performance, distributed systems that serve billions of real-time ad impressions with low latency and high reliability
• Contribute to core ad infrastructure including our ad server, campaign manager, tracking pipelines, and publisher integrations
• Help scale Promoted Stores, one of eBay’s fastest-growing ad products, delivering impactful storefront experiences for sellers
• Collaborate across Ads, Product, and Platform teams to deliver features that connect buyers and sellers in meaningful ways
• Practice and advocate for clean, maintainable code, including adoption of functional programming concepts in Scala
• Grow your skills in large-scale systems, ad tech, observability, and frontend technologies through hands-on development and mentorship opportunities

Nice to haves

• Experience with functional libraries like Cats, ZIO, or Monix
• Knowledge of Spring Framework and REST APIs

Perks and benefits

• Benefits package
• Collaborative work environment
• Opportunities for skill growth and mentorship