Job Description

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).