Top Java Developer Jobs in Dublin

As an Automation QA Engineer, you'll test payment integrations, define test scope, develop automation plans, and build reliable automated tests to ensure product quality and continuous improvement.

Design, develop, and deploy high-volume, low-latency Java applications and microservices. Lead full development lifecycle, write testable code, manage releases, improve architecture, and support Agile/Scrum processes.

Design and build backend and frontend functionality using Java and Angular. Develop features, maintain code quality, write unit and integration tests, perform peer code reviews, support system testing, and resolve defects in standards-driven environments.

Serve as a senior Java full-stack engineer building and maintaining backend services for blockchain applications, integrate APIs with React/Vue frontends, design scalable enterprise blockchain solutions, troubleshoot complex backend issues, and collaborate with cross-functional teams to apply best practices.

Optimize and scale blockchain node performance, design and implement core system plugins, collaborate across teams to integrate blockchain solutions, conduct performance testing and debugging, and stay current on blockchain and infrastructure trends.

Design and improve Elasticsearch distributed-systems components for consistent, concurrent indexing and cluster coordination. Scale shards, nodes, and petabyte datasets, diagnose performance and concurrency issues, support operations/support teams, and own end-to-end projects including technical design and cross-team development.

Lead architecture and implementation of usage-based billing and metering systems. Ensure data accuracy, reliability, and security; integrate billing with Stripe, marketplaces, and CRM; mentor engineers, define backend patterns in Go, and improve observability and operational standards.

Design, build, test, and maintain Java backend services and event-driven integrations; develop Angular user interfaces; improve CI/CD, observability, and automation; participate in design/code reviews and mentor junior engineers.

Design and maintain high-scale data pipelines and backend services, ensuring systems meet performance and compliance requirements while mentoring teammates and adopting new technologies.

The Senior Java Engineer will design complex systems, optimize performance, maintain code quality, and ensure application reliability. Responsibilities include translating requirements into applications and troubleshooting issues.