Unix Administrator

Key Responsibilities:

- Perform system administration and maintenance in a heterogeneous environment (production, DR, test) comprising Sun Solaris servers and Linux-based servers.
- Conduct system upgrades and enhancements on IT infrastructure components.
- Implement operating system and product-specific security hardening and patches.
- Monitor obsolescence of IT infrastructure components (systems).
- Track expiry and perform renewal of system passwords and certificates.
- Implement a schedule of system backups and database archive operations to ensure data recoverability and business continuity.
- Develop and implement disaster recovery plans for IT infrastructure (systems) and conduct regular disaster recovery testing and component switchover exercises to ensure usability of standby and DR equipment.
- Manage the application User Acceptance Test (UAT) and maintain the use of the UAT environment.
- Document middleware platforms and related infrastructure as directed, covering functionality, maintenance, and administration.
- Provide technical support and guidance (level 3) to end-users and other IT resources.

Requirements:

Education and Qualification

- Bachelor’s degree in Information Technology, Information Systems, Computer Science, or a related field.
- Minimum 8 years of experience in system administration and support in Middleware, Unix, and Linux systems.

Skills and Knowledge

- Experience working with SAN for Unix and Linux platforms.
- Experience in performing OS hardening and patching.
- Experience with enterprise backup and system monitoring and management software.
- Proficient in scripting for Unix and Linux-based environments to automate tasks.
- Familiarity with database administration and data centre operations is an advantage.
- Ability to provide 24/7 support on a rostered basis.
- Willingness to provide weekend and after-office hours support for change implementation (for critical production services).
- Excellent ability to communicate technical and strategic information effectively across all organisational levels, fostering collaboration and alignment.
- Strong interpersonal skills and ability to work independently as well as in a team.
- Demonstrated analytical and problem-solving abilities.
- Self-starter with a customer-oriented mindset.
- Resilient, with the ability to multi-task and operate in a fast-paced environment.

Professional Certifications

- Unix and Linux Certified System Administrator certifications.
- Industry certification for public cloud administration preferred.