System & Network Security Specialist

Venturenix Limited; Hong Kong; On-site; HKD 480,000 - 720,000; Full time

Job summary

Venturenix Limited is seeking a skilled IT security professional to plan, implement, and manage information security enhancement projects. You will work on network infrastructure security, support security assessments and testing, and help maintain updated security documentation and policies.

Key responsibilities include planning and implementing security initiatives, managing security activities such as penetration testing, vulnerability scanning, SRAA, and PIA, plus liaising with internal

Qualifications

• Bachelor-level knowledge in computer science or related fields is expected.
• Certifications such as ISACA CISA/CRISC are preferred.
• Experience in Information Security Management, Network/Application Security, IT Security Compliance, Linux Admin, and Server Virtualization is desirable.
• Experience with SRAA, PIA, vulnerability scanning, and penetration testing is advantageous.

Responsibilities

• Plan and implement IT security initiatives and network security solutions.
• Support security assessments, testing, and ongoing security documentation updates.
• Liaise with internal teams and IT contractors for outsourced security work.
• Perform security patching, system upgrades, and routine infrastructure support.

Skills

Network security

Penetration testing

Vulnerability scanning

Information security management

IT security compliance

Linux administration

Server virtualization

SLA monitoring

Contractor management

Education

Higher Diploma or above in computer science

Tools

Active Directory

NGFW

PAM

EDR

NDR

IAM

SIEM

DLP

XDR

UEM

Job description

We are looking for a skilled IT security professional to plan, implement, and manage information security enhancement projects. You will work on network infrastructure security, support security assessments and testing, and help maintain updated security documentation and policies.

Key Responsibilities

• Plan and implement new IT security initiatives, enhancement measures, and network security solutions.

Manage and support IT security activities such as:

• Penetration testing
• Vulnerability scanning
• Security Risk Assessment and Audit (SRAA)
• Privacy Impact Assessments (PIA)

Review and update IT security documentation, policies, and guidelines.

Liaise with internal teams and IT contractors for outsourced security implementation services.

Perform security patching, system/software upgrades, and routine infrastructure support.

Requirements

Higher Diploma or above in computer science or relevant studies

Qualifications / Certifications such as ISACA CISA / CRISC, ISACA CISA / CRISC is preferred

• Experience in Information Security Management, Network/Application Security, IT Security Compliance, Linux System Administration, Server Virtualization / Infrastructure Management etc.

• Experience in IT security exercises, including SRAA, PIA, Vulnerability scanning, Penetration testing etc.

• Experience in managing IT contractors, including monitoring on-site implementation progress and validating Service Level Agreement (SLA) compliance etc.

Technical Skills (advantage)

Hands-on experience in system hardening / cybersecurity solutions, including familiarity with:

• Microsoft Active Directory (AD)
• Next-Gen Firewalls (NGFW)
• Privileged Account Management (PAM)
• EDR, NDR
• IAM
• SIEM
• Knowledge of:
• DLP, XDR, and UEM is an advantage.