Job Description

Job Title: Security Administrator – HPC Managed Services

Location: Singapore

Working Hours: 08:30 – 18:00, Monday to Friday (excluding Public Holidays)

On-Call Requirement: Participation in 24×7 Out-of-Office Hours (OOH) on-call rotation for P1/P2 incident escalation support

Role Overview

We are seeking a proactive and detail-oriented Security Administrator to support the organization's cybersecurity operations, security monitoring, vulnerability management, and access control functions. The role is responsible for maintaining the security posture of IT infrastructure, cloud platforms, servers, networks, and applications by implementing security controls, monitoring threats, responding to security incidents, and ensuring compliance with security policies and regulatory requirements.

The successful candidate will work closely with infrastructure, service delivery, and operations teams to protect critical business systems and data.

Key Responsibilities

• Monitor security alerts, events, and logs from various security platforms.
• Investigate and triage suspicious activities, security alerts, and incidents.
• Support incident response, containment, eradication, recovery, and post-incident review activities.
• Escalate critical security incidents to management and relevant stakeholders.
• Maintain incident records and ensure timely communication throughout the incident lifecycle.
• Conduct vulnerability scanning and security assessments across servers, endpoints, network devices, and cloud environments.
• Analyze vulnerability reports and prioritize remediation activities based on risk.
• Coordinate with infrastructure and application teams to remediate vulnerabilities.
• Track vulnerability closure and ensure compliance with remediation SLAs.
• Monitor security advisories, zero-day vulnerabilities, and emerging cyber threats.
• Manage user access requests, account provisioning, modification, and deprovisioning.
• Perform periodic user access reviews and entitlement recertification.
• Enforce least-privilege and Role-Based Access Control (RBAC) principles.
• Support Multi-Factor Authentication (MFA) and Privileged Access Management (PAM) controls.
• Monitor privileged account activities and investigate access violations.
• Administer endpoint security solutions, antivirus, EDR/XDR platforms, email security, and security monitoring tools.
• Manage certificate lifecycle, SSL certificates, and cryptographic key rotation activities.
• Maintain security baselines and hardening standards for systems and servers.
• Review firewall, VPN, and network security configurations.
• Support security configuration compliance and audit requirements.
• Support internal and external audits, compliance assessments, and security reviews.
• Maintain security policies, procedures, standards, and operational documentation.
• Prepare audit evidence, compliance reports, and risk assessment documentation.
• Assist with implementation and maintenance of security frameworks such as ISO 27001, NIST, CIS Controls, or Cyber Essentials.
• Ensure compliance with organizational policies and regulatory requirements.
• Support cybersecurity awareness and user training programs.
• Promote cybersecurity best practices across the organization.
• Assist with phishing simulations and security education initiatives.
• Communicate emerging threats and security recommendations to users and stakeholders.

Requirements

• Diploma or Bachelor's Degree in Cybersecurity, Information Security, Information Technology, Computer Science, or a related discipline.
• At least 2-3 years of experience in cybersecurity, security operations, system administration, or IT infrastructure support.
• Experience working in a Managed Services Provider (MSP), Security Operations Centre (SOC), Network Operations Centre (NOC), or enterprise IT environment is preferred.

Minimum Certification Requirements

• ITIL Foundation (or equivalent or higher).