Overview:

We’re seeking an experienced Java Developer to contract for our team for a highly focused 6 month project, in order enhance our product suite by developing custom extensions and Zimlets for Zimbra Collaboration Suite (ZCS).

This role requires expertise in Java, secure operations, Linux command line proficiency, automated testing, and CI / CD pipeline management. Prior experience with Zimbra is a plus but not required.

The ability to read and understand Zimbra documentation is essential, however.

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Develop & Maintain: Design, develop, deploy and support custom Zimbra extensions and Zimlets.

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Secure Operations: Implement and manage secure file transfer operations using SSH and SCP.

• Linux Proficiency: Utilize the Linux command line for development, deployment, and troubleshooting tasks.

• Automated Testing: Develop and execute automated test scripts to ensure software quality, using frameworks like JUnit or TestNG.

• CI/CD Pipelines: Configure and maintain CI/CD pipelines (e.g., Bitbucket Pipelines, Jenkins, GitLab CI) to streamline development and deployment.

• Code Quality: Write clean, scalable, and well-documented Java code; participate in code reviews and testing.

• Collaboration: Work closely with cross-functional teams to integrate new features and troubleshoot issues.

• Documentation: Create and maintain technical documentation for developed features and processes.

• Dependency Management – Proficient in managing project dependencies and builds.C

• Logging & Monitoring – Experience in application monitoring and debugging in production environments.

• Database Knowledge - Ability to work with databases and optimize queries if needed.

• Performance Optimisation & Profiling– Ensuring optimal performance for extensions and Zimlets.

• Containerisation & Orchestration) – Understanding of containerized deployment and orchestration.

• Authentication & Security– Familiarity with modern authentication mechanisms.

• Email Protocols & Zimbra APIs– Experience integrating with Zimbra email functionalities.

• Concurrency & Multithreading in Java – Handling multiple simultaneous email-related operations efficiently.