Senior Java Backend Architect: Microservices, Batch & API

EVYONIC SOLUTIONS PTE. LTD.; Singapore; On-site; SGD 150,000 - 210,000; Full time

Job summary

EVYONIC SOLUTIONS PTE. LTD. is seeking an experienced Java backend engineer to develop and maintain scalable applications using Java and Spring Boot within distributed microservices environments.

You will design RESTful services, integrate enterprise APIs, implement batch processing with Spring Batch, and work with Docker/Kubernetes, Jenkins, ELK, and Zipkin to ensure reliable, observable systems. The role emphasizes enterprise integration, data access across SQL/NoSQL databases, and a strong

Qualifications

• 8+ years of hands-on Java and Spring Boot enterprise development.
• Experience developing microservices and RESTful APIs for distributed apps.
• Hands-on Spring Batch for batch processing.
• Experience with API management platforms (WSO2 API Manager or similar).
• Experience with Apache Camel and RabbitMQ.
• Strong DB2 and SQL relational database experience; exposure to MongoDB/Redis.
• Docker and Kubernetes for containerized deployments.
• Jenkins and CI/CD automation experience.
• ELK Stack for logging/monitoring; distributed tracing tools like Zipkin.
• JUnit and Mockito for automated tests; SonarQube for code quality.
• Experience in enterprise integration, distributed systems, API-based architecture, and performance.
• Linux environments and Agile development practices.

Responsibilities

• Develop and maintain scalable backend applications using Java and Spring Boot.
• Design and integrate RESTful services and enterprise APIs.
• Develop batch-processing solutions with Spring Batch.
• Implement API integration and management with WSO2 API Manager.
• Develop components using Apache Camel and RabbitMQ.
• Build data-access layers for DB2, MySQL, Oracle, MongoDB, and Redis.
• Containerize and deploy applications with Docker and Kubernetes.
• Implement CI/CD workflows with Jenkins.
• Apply SonarQube for code quality and static analysis.
• Support centralized logging/monitoring using the ELK stack and tracing with Zipkin.
• Develop unit and integration tests using JUnit and Mockito; participate in code reviews.

Job description

EVYONIC SOLUTIONS PTE. LTD. is seeking an experienced Java backend engineer to develop and maintain scalable applications using Java and Spring Boot within distributed microservices environments.

You will design RESTful services, integrate enterprise APIs, implement batch processing with Spring Batch, and work with Docker/Kubernetes, Jenkins, ELK, and Zipkin to ensure reliable, observable systems. The role emphasizes enterprise integration, data access across SQL/NoSQL databases, and a strong