Johannesburg, South Africa | Posted on 18/06/2026
Key Responsibilities
- Design, develop, and maintain enterprise-grade backend applications using Java EE/Jakarta EE standards.
- Build and optimize APIs, microservices, and integration layers using frameworks such as Spring / Spring Boot, JAX-RS, JPA, EJB, Hibernate.
- Develop and maintain high-performance server-side components and batch processing workflows.
- Implement unit tests, integration tests, and ensure code quality through best practices and standards.
- Participate in solution architecture design sessions for new and existing systems.
- Contribute to the design of scalable, modular, and resilient backend architectures.
- Identify performance bottlenecks and recommend system improvements.
- Work with relational databases such as PostgreSQL, Oracle, MySQL, SQL Server.
- Develop efficient SQL queries, stored procedures, and ORM mappings.
- Ensure data integrity, performance, and security.
- Integrate systems using REST, SOAP, JMS, Kafka, or other messaging platforms.
- Develop and maintain middleware components and enterprise integration patterns (EIP).
- Work with CI/CD pipelines (Jenkins, GitHub Actions, GitLab CI, Azure DevOps, etc.).
- Build containerized services using Docker; experience with Kubernetes is a plus.
- Experience deploying Java applications in AWS, Azure, or on-premise environments.
- Familiarity with infrastructure automation/configuration tools is considered an advantage.
- Implement application security best practices (authentication, authorization, OWASP standards).
- Work with identity providers (OAuth2, SSO, JWT, Keycloak, Azure AD, etc.).
- Lead development streams and mentor junior developers.
- Conduct code reviews and enforce development standards.
- Work closely with business analysts, testers, and product owners.
Requirements
- Strong experience in Java EE/Jakarta EE, Spring, Spring Boot, and ORM frameworks.
- Solid understanding of REST APIs, microservices architecture, and enterprise integration.
- In‑depth AWS experience with services like API Gateway, EC2, Lambda, etc.
- Strong SQL and database design experience.
- Experience with message brokers (JMS, Kafka, RabbitMQ) and service‑oriented architectures.
- Experience with Git and CI/CD automation.
- Experience deploying and monitoring Java applications in cloud or hybrid environments.
- Experience with Kubernetes/OpenShift, Apache Camel, MuleSoft, or other integration frameworks.
- Monitoring tools (Prometheus, Grafana, ELK, Splunk).
- Caching frameworks (Redis, Hazelcast).
- Cloud certifications (AWS, Azure, GCP) are beneficial.
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