Johannesburg: Senior Java Developer posted by iOCO Digital Pty Lty

We’re looking for a Senior Java Developer with a strong foundation in Spring Boot microservices to join us as a consultant. In this role, youll help design, build, and maintain scalable and reliable backend services using modern tools and best practices.

What Youll Do:

• Design, develop, and maintain robust microservices using Spring Boot
• Collaborate with cross-functional teams on architecture, development, deployment, and monitoring
• Write clean, testable, and maintainable code with tools like JUnit, Mockito, and Jacoco
• Build and document RESTful APIs, leveraging OpenAPI/Swagger
• Work within a CI/CD pipeline using Git, BitBucket, Bamboo, and container tools like Kubernetes and Rancher
• Integrate and configure tools such as Kafka, Camunda 7, and PostgreSQL
• Use Agile and Scrum methodologies for sprint planning, issue tracking, and documentation via JIRA and Confluence
• Monitor, profile, and optimize services using Grafana, SonarQube, and Spring Boot Actuator

Your expertise:

Must-Have Skills:

• At least 7 years proven experience building microservices with Java and Spring Boot
• Have a solid foundation in Spring Boot Microservice development
• Proficiency in SQL, JSON, XML
• Solid understanding of JPA, JWT, Lombok, Flyway, SLF4J, and Jackson, or similar
• Experience with testing frameworks (for example; Mockito, JUnit)
• Familiarity with DevOps workflows and tools: Git, BitBucket, Harbor, Bamboo

Nice-to-Haves:

• Exposure to Kafka, Camunda, Avro
• Knowledge of Kubernetes, Rancher, and cloud-native deployment strategies
• Understanding of architectural patterns like API gateways, dependency injection, and containerization
• Experience with metrics, logging, and observability tools like Grafana and Spring Boot Actuator
• Familiarity with SonarQube, Jacoco, and code quality best practices

Soft Skills:

• Comfortable in Agile environments and change/release processes
• Strong communication and documentation skills
• Eagerness to learn and work with a variety of modern tools