Sr Backend Engineer GraphQL Federation

At eBay were more than a global ecommerce leader were changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. Were 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. Were 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.

Location: Dublin Ireland

Organization: eBay Application Platform Frameworks Team

The Opportunity

Join the team architecting the future of eBays API ecosystem. As a Senior Backend Engineer you will build scale and evolve our global GraphQL Federation platform. You wont just be building subgraphs; you will be shaping the infrastructure that enables hundreds of internal teams and millions of global users to interact with eBays data seamlessly.

Youll help build operate and evolve our GraphQL Federation and the platform to ensure scalable reliable and developer-friendly APIs enabling seamless experiences for eBays partners sellers and internal teams.

What You Will Accomplish

• Architect the Supergraph: Design and implement high-performance federated architectures with platforms such as Apollo Federation and WunderGraph.

• Scale Platform Infrastructure: Develop the core tooling and gateways that empower distributed teams to integrate services into a unified reliable schema.

• Optimize Performance: Drive initiatives for query optimization advanced caching strategies and efficient schema composition at global scale.

• Ensure Resilience: Implement critical security patterns (AuthN/AuthZ) rate limiting and observability across the federation layer.

• Technical Leadership: Act as a domain expert on SOLID principles. Help teams weigh REST versus GraphQL trade-offs and federation standards to deliver a world-class developer experience.

What You Bring

• Expertise: 6 years of backend engineering experience with a deep focus on GraphQL Federation in production environments.

• Technical Stack: Mastery of Java (Spring Boot) and . You should be comfortable moving between high-performance JVM services and JavaScript environments.

• System Design: Proven track record in microservices distributed systems and data modeling. You understand the nuances of multithreading and asynchronous processing.

• Cloud Native: Hands-on experience with Kubernetes CI/CD (Jenkins/Maven) and cloud-native deployment patterns.

• Outlook: A Platform-as-a-Product approach. You prioritize reliability scalability and the success of the developers using your platform.

Additional Details

eBay is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race color religion national origin sex sexual orientation gender identity veteran status and disability or other legally protected you have a need that requires accommodation please contact us at. We will make every effort to respond to your request for accommodation as soon as possible. View our accessibility statement to learn more about eBays commitment to ensuring digital accessibility for people with disabilities.

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