Unix System Administrator

Job Description & Requirements

Key Responsibilities:

System Administration

• Perform system administration and maintenance in a heterogeneous environment (production, DR, test) comprising of Sun Solaris servers and Linux-based servers
• Perform system upgrade and enhancement on IT infrastructure components
• Implement operating system and product-specific security hardening and patches
• Monitor obsolescence of IT infrastructure components (systems)
• Monitor 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 upkeep the use of UAT environment
• Document middleware platforms and related infrastructure as directed with respect to functionality, maintenance, and administration.
• Provides technical support and guidance (level 3) to end-users, and other IT resources.

Incident and Problem Management

• Provide second level system support and resolve incidents and problems in accordance to established Service Level Agreement (SLA)
• Perform problem diagnosis on incidents and propose and implement measures to prevent recurrence

Change and Release Management

• Schedule and release system changes to production environment in accordance with the change management process / procedures
• Create deployment packages for application changes using the application deployment tool

Configuration Management

• Develop and maintain a comprehensive operating system hardware and software configuration database / library of all IT infrastructure components used in the production environment

Capacity and Performance Management

• Perform infrastructure capacity monitoring and planning
• Monitor and perform performance tuning to optimize system performance

Process Management

• Devise and implement the underlying processes supporting IT service management, in conformance to corporate security policies and guidelines

Project Management and Support

• Provide systems support to projects in accordance with the project timeline
• Manage infrastructure enhancement in accordance with established guidelines

Documentation

• Develop and maintain technical and process documents to upkeep IT infrastructure

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 in 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
• Familiar with database administration and data centre operations will be an advantage
• Provide 24/7 support on a rostered basis
• 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 able to work independently as well as in a team
• Demonstrate good analytical and problem-solving abilities
• Self-starter and possess a customer-oriented mindset
• Resilient, 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