Security Tooling & Patch Operations Analyst

OPUS IT SERVICES PTE LTD; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

OPUS IT SERVICES PTE LTD is seeking a security operations professional to manage security tooling, vulnerability remediation, and compliance across cloud and on-prem environments. You will coordinate patch cycles, perform hardening, and support IAM reviews to ensure least-privilege access.

The role requires hands-on experience with Trend Micro, Tenable, and SIEM tools, and collaboration with SOC and infra teams.

Qualifications

• Diploma or Bachelor's degree in Cybersecurity or related field (or equivalent experience)
• 3-5 years in security operations, security administration, or infrastructure security
• Hands-on experience administering endpoint, XDR, or vulnerability management tools (Trend Micro and Tenable preferred)
• Experience with patch management and configuration hardening on Linux (RHEL preferred) and Windows
• Working knowledge of AWS security services and shared responsibility model
• Preferred certifications: CompTIA Security+, CISSP (associate or full), Microsoft SC-200, AWS Security Specialty
• Nice to have: CISM, CISA, ISO 27001 Lead Implementer, Tenable certifications

Responsibilities

• Administer and maintain security platforms such as Trend Micro, Tenable, Microsoft Sentinel, and DLP tools
• Deploy and upgrade agents, manage policies, and monitor tool health, licensing, and coverage
• Onboard new servers, applications, and log sources into security tooling and SIEM
• Tune policies, detection rules, and exclusions in coordination with SOC and apps teams
• Schedule and review vulnerability scans, validate findings by CVSS and asset criticality
• Raise remediation tickets, track closures, and escalate overdue items
• Coordinate patch cycles with infrastructure and application teams
• Manage risk acceptance and exception requests with justification
• Apply and verify security baselines (e.g., CIS for RHEL, Windows, cloud) across servers
• Assess application impact of hardening controls before rollout
• Monitor configuration drift and remediation of non-compliant assets
• Support periodic access reviews, privileged audits, and user recertification
• Review IAM roles/policies (e.g., AWS) against least-privilege
• Monitor certificate expiry, key management, and secrets hygiene
• Assist SOC and IR teams with investigation data and containment actions
• Contribute to post-incident reviews and implement improvements
• Prepare reports on patch compliance and vulnerability trends
• Maintain evidence for audits (ISO 27001, government standards)
• Maintain security SOPs/runbooks and change management logs
• Track change requests and participate in change advisory discussions

Skills

Security operations

Security administration

Vulnerability management

Patch management

AWS security

ISO 27001 knowledge

Compliance & governance

Scripting (Bash/PowerShell/Python)

Education

Bachelor's degree in Cybersecurity

Diploma in Cybersecurity or related field

Tools

Trend Micro

Tenable

Microsoft Sentinel

DLP tools

SIEM

AWS security services

Job description

OPUS IT SERVICES PTE LTD is seeking a security operations professional to manage security tooling, vulnerability remediation, and compliance across cloud and on-prem environments. You will coordinate patch cycles, perform hardening, and support IAM reviews to ensure least-privilege access.

The role requires hands-on experience with Trend Micro, Tenable, and SIEM tools, and collaboration with SOC and infra teams.