Cybersecurity Engineer

ServiceOne Limited; Hong Kong; On-site; HKD 420,000 - 660,000; Full time

Benefits offered by this job

Banking holiday & medical insurance

Job summary

ServiceOne Limited is a leading IT consulting and managed services provider headquartered in Hong Kong, delivering security-focused solutions across APAC. We seek a seasoned IT Security Engineer to design, implement, and monitor robust defenses for corporate and client environments, including cloud, on-premises, and AI compute setups.

The role requires 3-5 years in IT security, strong knowledge of firewalls, VPNs, IDS/IPS, and endpoint protection, and English/Chinese proficiency.

Qualifications

• 3-5 years of relevant work experience in IT security, network administration, or system engineering.
• High Diploma or above in Information Security, Computer Science, or related disciplines.
• Solid understanding of firewalls, VPNs, IDS/IPS, and endpoint protection technologies.
• Relevant certifications such as CISSP, CEH, OSCP, GPEN are highly preferred.

Responsibilities

• Design, configure, and maintain security solutions such as firewalls, IDS/IPS, VPNs, endpoint protection, SIEM, and DLP systems.
• Monitor and analyze network traffic and system logs to detect, investigate, and respond to potential security incidents.
• Conduct vulnerability assessments, penetration tests, and remediation plans to strengthen security posture.
• Support security audits, risk assessments, and compliance reviews with documentation and evidence.
• Design, implement, and maintain security controls for corporate and client infrastructures including AI compute, cloud, and on-premises networks.
• Assist in development and enforcement of security standards and baselines (Windows, Linux, network devices).
• Collaborate with Business Applications teams to ensure secure infrastructure in new implementations.
• Provide cybersecurity support for remote sites and construction site deployments.
• Stay updated with threats and regulatory requirements; propose improvements.
• Prepare audit and compliance materials as required.

Skills

Security engineering

Incident response

Vulnerability assessment

Network security

Bilingual (English/Chinese)

Team collaboration

Education

High Diploma or above in Information Security/Computer Science

Tools

Wazuh

ELK Stack

Zabbix

Metasploit

OpenVAS

Burp Suite

Nessus

Nikto

Job description

ServiceOne Limitedis one of the largest Information Technology (IT) consulting and managed services provider in the region. The company was founded in 1999 and is headquartered in Hong Kong with strong foothold in China and business coverage in Asia Pacific region. Our clients are government departments, non-government organizations, education institutes, multinational corporations, small and medium companies across various industries. Our services provide Consulting and Application Management Services, Digitalization of Workflow Management, Outsource Managed Services, Hardware & Software Maintenance, Project Management, Product Life Cycle Management, Secondment Services & etc.

We are a member of Expert Systems Holdings Limited (HKEX Stock Code 8319) .

To Stay true to ServiceOne's ongoing mission that is to deliver the highest quality services to all her customers, we invite high-caliber candidate of you to join our company.

For more information, please visit our website atwww.serviceoneasia.com.

Responsibilities

Design, configure, and maintain security solutions such as firewalls, intrusion detection/prevention systems (IDS/IPS), VPNs, endpoint protection, SIEM, and DLP systems

Monitor and analyze network traffic and system logs to detect, investigate, and respond to potential security incidents

Conduct vulnerability assessments, penetration tests, and implement remediation plans to strengthen overall security posture in corporate or client projects

Support information security audits, risk assessments, and compliance reviews by preparing documentation, evidence, and recommendations for remediation

Design, implement, and maintain security controls for both corporate and client infrastructures, including AI compute environments, cloud infrastructure, and on-premises networks

Assist in the development and enforcement of security standards and baselines (e.g., hardening for Windows, Linux, and network devices)

Collaborate with Business Application teams to ensure secure infrastructure setup in all new implementations and system integrations

Provide cybersecurity support for remote sites and construction site network deployments, ensuring secure connectivity and communication

Stay up to date with the latest cybersecurity threats, technologies, and regulatory requirements; propose proactive improvements

Prepare documentation, audit reports, and compliance materials when as required

Requirements

High Diploma or above in Information Security, Computer Science, or related disciplines

3-5 years of relevant work experience in IT security, network administration, or system engineering

Detail-oriented, self-motivated, and able to work independently with minimal supervision

Solid understanding of network protocols, firewalls, VPNs, IDS/IPS, and endpoint protection technologies

Proficiency with open-source and commercial security and monitoring tools such as Wazuh, ELK Stack, Zabbix, Metasploit, OpenVAS, Burp Suite, Nessus or Nikto

Hands-on experience in both Windows and Linux (Ubuntu) environments, including system hardening and security configuration

Familiarity with Corporate Network, SAN, Opensource Systems and Virtualization Technologies (e.g., Proxmox, VMWare)

Knowledge of cybersecurity frameworks (e.g., ISO 27001, CIS Controls) and compliance requirements

Strong analytical mindset with problem-solving and incident response skills

Relevant certifications such as CISSP, CEH, OSCP, GPEN are highly preferred.

Good command of English and Chinese, fluency in Cantonese and Putonghua

Able to liaise effectively with internal teams and suppliers from mainland China

We offer excellent career opportunities, attractive remuneration package and fringe benefits includingbanking holiday &medical insurance.

(The information providedwill be used for employment relatedpurpose only. All information of unsuccessful applicants will be destroyed within six months)

ServiceOne Limited is one of the leading Information Technology (IT) consulting and managed services provider in the Asia Pacific region. Founded in 1999 and headquartered in Hong Kong, we have built a strong presence across China and an extensive service network throughout the APAC region. With a solid regional footprint and a long standing commitment to service excellence, ServiceOne delivers end to end IT solutions that support our clients' operational growth and digital transformation. Over the years, we have continued to expand our capabilities, evolving with market needs to ensure we provide reliable, scalable, and future ready technology services.

ServiceOne Limited is one of the leading Information Technology (IT) consulting and managed services provider in the Asia Pacific region. Founded in 1999 and headquartered in Hong Kong, we have built a strong presence across China and an extensive service network throughout the APAC region. With a solid regional footprint and a long standing commitment to service excellence, ServiceOne delivers end to end IT solutions that support our clients' operational growth and digital transformation. Over the years, we have continued to expand our capabilities, evolving with market needs to ensure we provide reliable, scalable, and future ready technology services.