IT Security Engineer (CyberSecurity)

JOBSTER PRIVATE LTD.; Singapore; On-site; SGD 90,000 - 170,000; Full time

Job summary

JOBSTER PRIVATE LTD. is seeking a senior cybersecurity operations professional to lead vulnerability management, tool governance, and cloud security initiatives across a multi-vendor environment, including CII considerations.

You will drive vulnerability remediation, automation, and compliance programs, coordinating with vendors and internal teams to minimize risk and downtime while preparing for audits and DR exercises.

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Computer Science, or related field.
• Minimum5years of hands-on experience in cybersecurity operations and security tool management.
• Minimum 3 years of hands-on experience administering Tenable vulnerability management platform (Tenable One, Security Center, Nessus).
• Minimum 3 years of experience administering and troubleshooting Tenable Nessus platform (agent-based scans, credentialed scans, plugin updates).
• Minimum 3 years of hands-on experience developing, maintaining, and optimizing Tenable Audit Files for CIS Benchmark compliance scans.
• Hands-on ability in Privileged Access Management tools such as CyberArk.
• Good vendor management skills.
• Strong written and verbal communication; able to influence non-technical audiences.
• Experience across heterogeneous networks including cloud environments and some CII.
• Tenable Security Center Expert or equivalent certification is preferred.

Responsibilities

• Lead Vulnerability Management (VM) of assigned cyber security tools and remediation planning.
• Lead security compliance through system hardening, configuration management, and policy enforcement.
• Lead IT lifecycle management and ensure timely updates with minimal business disruption.
• Collaborate with cross-functional teams for planned downtime and system upgrades.
• Support audits and perform remediation actions; work with vendors as needed.
• Provide operations support in multi-vendor networks including CII and cloud environments.
• Participate in Disaster Recovery (DR) exercises and contribute to cloud security tool planning.
• Manage tool setups and migrations; maintain SOP and KM documentation.
• Drive efficiencies through AI and automation; document knowledge centrally.
• Occasionally provide after-hours support including weekends as required.

Skills

Vulnerability Management

Palo Alto Prisma Cloud

Tenable Nessus

Automation (Ansible/Python)

Privileged Access Management

Vendor management

Cloud security

Communication skills

Regulatory compliance

AI in security

Education

Bachelor's degree in Cybersecurity/IT/CS

Tools

Tenable Nessus

Tenable Security Center

Tenable One

CyberArk

Palo Alto Prisma Cloud

Nessus Scanners

Ansible

Python

PowerShell

Job description

Key Responsibilities

This role ensures the security posture of critical systems through proactive monitoring, incident response, system maintenance, and implementation of security enhancements across the organisation's technology stack.

Be part of a team thatis responsible formanagingandmaintainingthe cyber security operations of organisation:

• • Lead Vulnerability Management (VM) of assigned cyber security tools, including proactive monitoring of vulnerabilities, planning remediation schedules, adhering to vulnerability deadlines and seeking deviations via Risk Assessment (RA).

  • Leadsecurity compliance through regular system hardening, configuration management, and policy enforcement.

  • Lead IT lifecycle management.

  • Ensuretimelyand successful updates and upgrades whilst ensuring minimal disruption to business operations.

  • Plan downtime and collaborate with cross-functional teams for system updates and upgrades.

  • Support regular audits and perform remediation actions.

  • Work closely with vendors.

  • Provide operations support, in a multi-vendor network including Critical Information Infrastructure (CII).

  • Participatein Disaster Recovery (DR) exercise and contribute to architectural planning for managed security tools in cloud environments.

  • Manage tool setups and migrations.

  • Create,maintainand review technical documentation, Standard Operating Procedures (SOP) as part of Knowledge Management (KM).

  • Drive efficiencies through AI and automation.

  • Proactive documentation as part of Knowledge Management (KM).

  • Occasionally provide after-hours support including weekends asrequired.

What we are looking for

Requirements

• • Bachelor's degree in Cybersecurity, Information Technology, Computer Science, or related field.

  • Minimum5years of hands-on experience in cybersecurity operations and security tool management.

  • Minimum 3 years of hands-on experience administering and maintaining the Tenable vulnerability management platform, including Tenable One, Tenable Security Center, Nessus Scanners, and related components.

  • Minimum 3 years of experience in administering and troubleshooting the Tenable Nessus platform, including agent-based scans, credentialed scans, plugin updates, scan policies, and vulnerability assessment operations.

  • Minimum 3 years of hands‑on experience developing, maintaining, and optimizing Tenable Audit Files for CIS Benchmark compliance scans, including tailoring audit policies to organizational security standards and regulatory requirements.

  • Hands‑on ability in operating Privileged Access Management (PAM) tools such as CyberArk.

  • Good vendor management skills.

  • Good written and verbal communication skills withdemonstratedability to influence and communicate effectively with non-technical audiences including management.

  • Applicants are expected to manage work in fast-paced environments, across heterogeneous networks including cloud environments, some of which are Critical Information Infrastructure (CII).

  • Tenable Security Center Specialist or equivalent certification is a mandatory requirement for this role. Candidates who do not have the relevant certification are advised not to apply.

• • Good understanding of Vulnerability Management (VM) and Compliance Management processes, with hands‑on experience using enterprise security tools such as Tenable Nessus and Palo Alto Networks Prisma Cloud (formerly Twistlock) for vulnerability assessment, compliance monitoring, and remediation support.

  • Experience with automation tools and scripting (Ansible, Python, PowerShell)to automate repetitive tasks.

  • Experience with Singapore Government security standards and compliance frameworks (IM8, CSA guidelines).

  • Experience inharnessingAI solutionstocontinuously improvecybersecurityoperations efficiency, including processes and service delivery,isadvantageous.

  • Experience indemonstratingAI literacy with the ability to use AI tools responsibly, ethically, and securely, ensuring compliance with organisational policies, data privacy, confidentiality, and governancerequirements.

  • Understanding of financial sector security requirements and regulations.

  • Tenable Security Center Expert or equivalent certification is preferred.