Senior java developer

Johannesburg, South Africa | Posted on 06/10/2026

We are looking for an experienced Senior Java EE Developer with hands-on enterprise Java development experience. The ideal candidate will have a strong background in building secure, scalable, and high-performance backend systems within complex enterprise environments. You will contribute to solution architecture, lead development efforts, and collaborate across multidisciplinary teams to deliver robust business applications.

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 Postgre SQL, Oracle, My SQL, 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, Git Hub Actions, Git Lab CI, Azure Dev Ops, 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. Strong experience with Dev Ops and ability to build and manage pipelines and support development. Solid understanding of REST APIs, microservices architecture, and enterprise integration. In depth AWS experience with experience encompassing services like API Gateway, EC2, Lambda, etc. Strong SQL and database design experience. Experience with message brokers (JMS, Kafka, Rabbit MQ) 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 / Open Shift, Apache Camel, Mule Soft, or other integration frameworks Monitoring tools (Prometheus, Grafana, ELK, Splunk) Caching frameworks (Redis, Hazelcast) Cloud certifications (AWS, Azure, GCP) are beneficial.