Find Senior java developer Jobs in Castleknock County Dublin

Sr Backend Engineer - GraphQL Federation
eBay Inc. —Dublin, County Dublin
- Full-time
- System design
- Java
- JavaScript
Lead Backend Developer
Citi —Dublin, County Dublin
- €93,280 a year
- Full-time
- Hybrid work
- Azure
- Java
- Master's degree
Senior Software Development Engineer
CarGurus —Dublin, County Dublin
- €78,000–€108,000 a year
- Azure
- Java
- SQL
Senior Software Developer - Authentication Team
Workday —Dublin, County Dublin
- €86,400–€129,600 a year
- Full-time
- Java
- Bachelor's degree
- Software development
Senior Software Engineer
Mastercard —Dublin, County Dublin
- Full-time
- Azure
- Computer Science
- System design
Senior Software Development Engineer , AWS Database Migration Service
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- Computer Science
- Java
- AWS
Senior Software Engineer (API) – Fraud Platform
Mastercard —Dublin, County Dublin
- Full-time
- Computer Science
- English
- Java
6d
AI Engineer
CR2 —Dublin, County Dublin
- Hybrid work
- Computer Science
- Java
- SQL
Quick apply
Senior Software Engineer I
LexisNexis Risk Solutions —Dublin, County Dublin
- €56,500–€94,400 a year
- Full-time
- Azure
- DevOps
- Java
Sr Software Engineer - SAP Commerce Cloud
Henry Schein Ireland —Dublin, County Dublin
- Full-time
- Computer Science
- DevOps
- Java
Senior Software Developer
Canada Life —Dublin, County Dublin
- Azure
- Oracle
- DevOps
Senior Software Development Engineer - Product Development Tools
Workday —Dublin, County Dublin
- €86,400–€129,600 a year
- Full-time
- Hybrid work
- Computer Science
- Java
- Master's degree
Senior Software Development Engineer, Aurora MySQL,Aurora PostgreSQL
Amazon Development Centre Ireland Limited —Dublin, County Dublin
- Full-time
- Microsoft Excel
- Computer Science
- Java
Senior Software Development Engineer
Autodesk —Dublin, County Dublin
- €71,000–€104,500 a year
- Full-time
- Java
- AWS
- Software development
Senior Full-Stack Developer
G MASS —Dublin, County Dublin
- Hybrid work
- Computer Science
- Engineering
- Java
Quick apply
Senior Java Full Stack Developer
Tata Consultancy Services —Dublin, County Dublin
- Call to connect
- Oracle
- Java
- SQL
1d
Agentic AI - Senior Software Engineer
Mastercard —Dublin, County Dublin
- Full-time
- System design
- Java
- JavaScript
Applications Development Technology Lead
Citi —Dublin, County Dublin
- €93,280 a year
- Full-time
- Hybrid work
- Engineering
- Java
- Master's degree
8d
Lead Software Engineer
Mastercard —Dublin, County Dublin
- Full-time
- Oracle
- Java
- SQL
Senior Core Banking Developer
U.S. Bank National Association —DUBLIN 18, County Dublin
- €102,680–€120,800 a year
- Full-time
- Azure
- Java
- Master's degree

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Sr Backend Engineer - GraphQL Federation

eBay Inc. -
Dublin, County Dublin

Apply Now

Job details

Full-time

Qualifications

CI/CD
Node.js
Kubernetes
System design
Java
JavaScript
Distributed systems
REST
GraphQL
Maven
AI
Leadership
Jenkins
Spring framework

Full job description

JOB DESCRIPTION

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.

Location: Dublin, Ireland

Organization: eBay Application Platform – Frameworks Team

The Opportunity

Join the team architecting the future of eBay’s API ecosystem. As a Senior Backend Engineer, you will build, scale, and evolve our global GraphQL Federation platform. You won't just be building subgraphs; you will be shaping the infrastructure that enables hundreds of internal teams and millions of global users to interact with eBay’s data seamlessly.

You’ll help build, operate, and evolve our GraphQL Federation and the platform to ensure scalable, reliable, and developer-friendly APIs, enabling seamless experiences for eBay’s 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 Node.js. 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 status. If you have a need that requires accommodation, please contact us at [email protected]. We will make every effort to respond to your request for accommodation as soon as possible. View our accessibility statement to learn more about eBay's commitment to ensuring digital accessibility for people with disabilities.

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senior java developer jobs in castleknock county dublin

Sr Backend Engineer - GraphQL Federation

Lead Backend Developer

Senior Software Development Engineer

Senior Software Developer - Authentication Team

Senior Software Engineer

Senior Software Development Engineer , AWS Database Migration Service

Senior Software Engineer (API) – Fraud Platform

AI Engineer

Senior Software Engineer I

Sr Software Engineer - SAP Commerce Cloud

Senior Software Developer

Senior Software Development Engineer - Product Development Tools

Senior Software Development Engineer, Aurora MySQL,Aurora PostgreSQL

Senior Software Development Engineer

Senior Full-Stack Developer

Senior Java Full Stack Developer

Agentic AI - Senior Software Engineer

Applications Development Technology Lead

Lead Software Engineer

Senior Core Banking Developer

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