Senior Backend Engineer – Cloud Native

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.
You'll 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.
Must-Have
Required Skills & Experience
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 that's 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.
Zinkworks is a trusted partner to Telecoms and Financial Services organizations around the world.
We help modernize legacy systems, move mission-critical systems into the cloud, and exploit the power of AI-driven automation.
Our people thrive in technically complex environments where our commitment to quality and our expertise in software innovation and cutting-edge technologies helps our clients prepare for the future, accelerate growth and improve operational efficiency.
We build long-lasting relationships with our customers to accompany them through their innovation journey.
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