Senior Backend Engineer – Cloud Native & Telecoms

About Zinkworks

Zinkworks is a global leader in innovation headquartered in Athlone Ireland with three offices locations worldwide. We utilise the latest cutting-edge technologies to bring industry-leading expertise to our Telecommunication and Financial services clients. We are adept at developing custom innovations that streamline our clients workflows and improve operational efficiency. With a commitment to quality and customer satisfaction we have earned a reputation as a trusted partner for businesses seeking reliable software services.

What we are looking for

We are looking for a Senior Backend Java Engineer to join our engineering team. This role is critical to designing and building scalable backend services that power AI/ML-driven rApps KPI management and large-scale ETL data pipelines. Youll work in an agile team contributing to architecture decisions writing high-quality code and ensuring robust delivery through automation and testing.

Key Responsibilities

• Design & Development: Build enhance and maintain scalable microservices in Java (Spring Boot).
• Data Pipelines & APIs: Implement REST APIs and event-driven services (Kafka / PubSub) to support high-throughput CM/PM ETL pipelines and KPI jobs.
• rApp Enablement: Develop backend services to support rApp design training deployment and lifecycle management.
• Performance & Reliability: Optimise services for scalability latency and fault tolerance.
• Collaboration: Work closely with frontend engineers data engineers and AI/ML specialists to deliver end-to-end features.
• Automation & Quality: Ensure code quality with automated tests CI/CD pipelines and static analysis tools.
• Architecture: Contribute to system design state management caching and validation frameworks.
• Mentorship: Guide junior engineers and promote engineering best practices.

Required Skills & Experience

Must-Have:

• Strong experience with Java Spring Boot and microservices architecture.
• Proven experience with Google Cloud Platform (GCP) including Pub/Sub GCS and BigQuery.
• Background in telecommunications / ORAN / KPI systems familiarity with network data (CM/PM) and performance monitoring.
• Strong understanding of REST APIs event-driven systems (Kafka / PubSub) and asynchronous communication patterns.
• Hands-on experience with SQL/NoSQL databases (e.g. Spanner Firestore PostgreSQL).
• Experience with CI/CD pipelines automated testing (unit integration E2E Karate).
• Solid knowledge of containerization and orchestration (Docker Kubernetes).
• Experience with caching frameworks (Redis Guava or equivalent).
• Excellent debugging profiling and performance optimisation skills.
• Strong problem-solving communication and teamwork skills.

Nice-to-Have Skills

• Exposure to AI/ML workflows and model integration.

What We Offer

• A key role in a company thats a trailblazer in the telecom sector offering significant opportunities for growth and leadership in marketing.
• The chance to work with a team of forward-thinking professionals committed to establishing Zinkworks position at the forefront of telecom innovations.
• Competitive compensation including health benefits retirement plans and performance incentives.
• An inclusive culture that fosters innovation collaboration and excellence.