Role Responsibilities: - Perform system administration and maintenance in a heterogeneous environment, including production, disaster recovery (DR), and test environments, comprising Sun Solaris servers and Linux-based servers. - Carry out system upgrades and enhancements on IT infrastructure components to ensure optimal performance and reliability. - Implement operating system and product-specific security hardening measures, as well as apply necessary patches to maintain system security. - Monitor the obsolescence of IT infrastructure components and systems, ensuring timely updates and replacements as needed. - Track the expiry and manage the renewal of system passwords and certificates to maintain system integrity and security. - Establish and implement a schedule for system backups and database archive operations to ensure data recoverability and support business continuity. - Develop and implement disaster recovery plans for IT infrastructure systems, and conduct regular disaster recovery testing and component switch-over exercises to ensure the usability of standby and DR equipment. - Manage the application User Acceptance Test (UAT) process and maintain the UAT environment for ongoing testing needs. - Provide technical support and guidance (level 3) to end-users and other IT resources, addressing complex technical issues. - Deliver second-level system support, resolving incidents and problems in accordance with established Service Level Agreements (SLAs). - Diagnose problems related to incidents, propose solutions, and implement measures to prevent recurrence. Requirements: - Bachelor’s degree in Information Technology, Information Systems, Computer Science, or a related field. - Minimum of 4 to 5 years of experience in system administration and support, specifically in Middleware, Unix, and Linux systems. - Experience working with Storage Area Networks (SAN) for Unix and Linux platforms. - Proven experience in performing operating system hardening and patching. - Familiarity with enterprise backup solutions and system monitoring and management software. - Proficiency in scripting for Unix and Linux-based environments to automate administrative tasks. - Knowledge of database administration and data centre operations is an advantage. - Willingness to provide 24/7 support on a rostered basis.