Senior Backend Engineer - MTS 1
Core
Design and build scalable backend systems for eBay's advertising platform, processing billions of ad-serving and bidding events to create valuable experiences for buyers and sellers.
Role type
Senior Backend Engineer (Ad-Tech)
Builds
Highly available, scalable RESTful APIs and event-driven systems for ad-serving and bidding
Domain
E-commerce / Ad-Tech
Deliverable
production ML models | product features
Required skills
Java (17+), Spring Boot, distributed systems, RESTful APIs, event-driven architectures, message queues (Kafka, RabbitMQ), relational and NoSQL databases, system design, CI/CD, AI-assisted development tools
Preferred skills
Scala, Node.js, GraphQL, columnar databases, open source contributions
Technologies
Java, Scala, Node.js, Spring Boot, Kafka, RabbitMQ, Oracle, Postgres, MySQL, Cassandra, MongoDB, Jenkins, GitHub Actions
Responsibilities
Design new experiences for sellers and advertisers to manage campaigns; Develop scalable backend services and APIs; Implement architectural patterns and conduct technical reviews; Collaborate with ML engineers on LLM integrations and recommendation systems; Operate within open source communities; Develop and deploy services via automated CI/CD pipelines
Seniority
Senior, hands-on IC