Key Responsibilities

1. Systems & Infrastructure Management

• Manage, monitor, and maintain servers, virtualization platforms, storage devices, firewalls, and related infrastructure.
• Install, configure, test, and maintain operating systems (Windows Server, RHEL), middleware, application software, and system management tools.
• Perform system upgrades, patch management, capacity planning, and performance tuning.

2. Day 2 Operations & Support

• Provide enterprise-wide operational support for Microsoft Windows, Linux, VMware, and middleware platforms.
• Respond to and resolve infrastructure and system incidents, escalating where necessary.
• Participate in 24/7 on-call support rotations and provide timely incident response.
• Conduct daily health checks, log reviews, and preventive maintenance activities.

3. Security & Compliance

• Perform security hardening and testing based on CIS benchmarks and Singapore Government security standards.
• Manage user accounts, access controls, password resets, and system roles securely.
• Ensure compliance with IT governance, audit, and regulatory requirements.
• Support disaster recovery planning, testing, and execution.

4. Collaboration & Projects

• Participate in the design and implementation of new infrastructure solutions and enhancements.
• Liaise with vendors, service providers, and internal IT teams to resolve issues and deliver solutions.
• Support IT audits, capacity planning, and documentation of infrastructure standards and procedures.

5. Patch Management & Upgrades

• Test, stage, and deploy OS patches, firmware updates, and COTS/middleware upgrades.
• Apply change management best practices for controlled deployment of fixes and enhancements.

6. Hardware & Platform Support

• Support and maintain enterprise-grade hardware: Dell servers, Cisco switches, FortiGate firewalls, UPS, storage (Dell EMC), and power management.
• Manage and troubleshoot enterprise platforms such as:
• Middleware & Integration: IBM MQ, IBM ACE, Kafka, WebSphere
• Databases & Data Services: MS SQL, MongoDB
• GIS & Applications: ArcGIS, Elastic Stack, Rocket.Chat
• Security Tools: Symantec, Carbon Black EDR, CipherTrust, Keycloak, Fortify WebInspect
• DevOps & Monitoring: Grafana, Prometheus, GitLab Enterprise, Ansible, OpenShift, Red Hat Satellite

7. Documentation & Continuous Improvement

• Maintain SOPs, system diagrams, maintenance logs, and incident reports.
• Generate reports on incidents, performance, and preventive actions.
• Propose automation and reliability improvements to strengthen system resilience.

Requirements

• Diploma / Bachelor’s Degree in Computer Science, Information Technology, or equivalent
• At least 3–5 years of combined experience in system administration and infrastructure support.
• Strong knowledge of Windows Server, RHEL, VMware, and enterprise hardware (servers, storage, networking).
• Hands-on experience with backup and recovery solutions, firewalls, and middleware platforms.
• Familiarity with container platforms (OpenShift/Kubernetes), DevOps tools (Ansible, GitLab), and IT monitoring stacks (Grafana, Prometheus).
• Working knowledge of ITIL processes (incident, change, and problem management).