IT Security Officer (Vulnerability & Risk Management)

INFINITE COMPUTER SOLUTIONS PTE LTDSingaporemycareersfuturepublished 10/08/2026
Must-have:AWSCloudSecurityHybrid

Key Responsibilities

Vulnerability Management

  • Execute and manage regular vulnerability scans across on-premises infrastructure and AWS services (EC2,S3, RDS, and other relevant services)
  • Generate, review, and distribute vulnerability scan reports to relevant technical teams and leadership
  • Follow up with Subject Matter Experts (SMEs) on outstanding vulnerability findings to ensure timely remediation or documented exceptions
  • Track remediation status and escalate overdue items per defined SLAs

Risk Register & Risk Acceptance

  • Own and maintain the organization's Risk Register, ensuring it reflects current, accurate risk data
  • Draft Risk Acceptance forms for identified risks that cannot be immediately remediated
  • Coordinate with business and technical stakeholders to review, negotiate, and obtain formal approval/sign-off on risk acceptances
  • Periodically review accepted risks for continued validity and reassessment

Security Operations Oversight

  • Monitor and verify that security signature updates (AV/EDR, IDS/IPS, etc.) are applied consistently across the environment
  • Review vendor security bulletins and vulnerability notifications to determine applicability to the customer's environment
  • Ensure timely triage and action on vendor-disclosed vulnerabilities affecting in-scope systems

Impact& Risk Analysis

  • Perform impact analysis on identified vulnerabilities using CVSS (Common Vulnerability Scoring System)scores
  • Contextualize CVSS base scores against the actual environment (asset criticality, exposure, compensating controls) to determine real-world risk and prioritization
  • Provide risk-based recommendations to stakeholders to support remediation prioritization decisions

Reporting& Communication

  • Prepare periodic status reports/dashboards on vulnerability management, risk register status, and outstanding risk acceptances for leadership review
  • Communicate effectively with technical SMEs, business stakeholders, and management across varying levels of technical understanding

Required Qualifications

  • Bachelor's degree in Information Security, Computer Science, or related field (or equivalent work experience)
  • 3–5+ years of experience in IT security operations, vulnerability management, or risk management
  • Hands-on experience with vulnerability scanning tools (e.g., Tenable/Nessus, Qualys, Rapid7)
  • Working knowledge of AWS security services and shared responsibility model (e.g., Security Hub, GuardDuty, Inspector, IAM)
  • Solid understanding of on-premises infrastructure security (servers, network devices, endpoints)
  • Strong understanding of CVSS scoring methodology and practical risk-based prioritization
  • Experience developing and managing Risk Registers and Risk Acceptance documentation
  • Excellent stakeholder management and communication skills, with ability to work cross-functionally

Preferred Qualifications

  • Relevant certifications: Security+, CySA+, CISSP, CRISC, AWS Security Specialty, or similar
  • Experience with GRC tools(e.g., ServiceNow GRC, Archer)
  • Familiarity with frameworks such as NIST 800-53, NIST CSF, or ISO 27001
  • Experience working in a hybrid on-prem/cloud environment supporting external customers

Soft Skills

  • Strong analytical and problem-solving skills
  • Detail-oriented with strong documentation habits
  • Ability to influence and drive accountability without direct authority
  • Comfortable working with ambiguity and competing priorities