Systems & Security Engineer — Cloud, Identity & Endpoint

KOS International Limited; Hong Kong; On-site; HKD 420,000 - 580,000; Full time

Job summary

KOS International Limited is seeking a Systems & Security Engineer in Hong Kong to support day-to-day cybersecurity operations and IT infrastructure. The role administers security controls across firewalls, Microsoft 365, Azure and endpoint systems, monitors security alerts and helps protect sensitive user data.

This hands-on position suits an experienced system/infrastructure professional expanding into information security, with opportunities to work closely with vendors and the SOC on

Qualifications

• Degree in Information Technology, Computer Science, Cybersecurity or related discipline.
• Minimum 3-5 years of combined experience in system administration, infrastructure support or cybersecurity operations.
• Hands-on experience with Microsoft 365, Azure or Entra ID administration.
• Practical knowledge of firewall administration, endpoint protection, email security and access control.
• Basic understanding of DLP, vulnerability management, incident response and security monitoring.
• Able to investigate technical issues and work independently with vendors and internal users.
• Good communication skills and a practical, service-oriented mindset.
• Good command in both English and Chinese.

Responsibilities

• Administer and regularly review firewall rules, access policies and network-security configurations.
• Monitor Microsoft 365 email security, suspicious login activities, security alerts and potential data-loss incidents.
• Support Microsoft 365, Azure, Entra ID, Microsoft Defender, endpoint security and identity-access controls.
• Assist with the configuration and monitoring of Data Loss Prevention, email-protection and endpoint-protection policies.
• Perform hands-on system administration, including user accounts, permissions, security patches and system-health checks.
• Investigate security alerts and coordinate with external vendors or the SOC on incident response and remediation.
• Conduct regular vulnerability reviews and follow up on security patches and identified risks.
• Maintain practical security procedures, system records and incident documentation.
• Support security-awareness activities, including phishing simulations and user communications.
• Assist the Head of IT with security assessments, audits and continuous improvement initiatives.

Education

Bachelor's degree in Information Technology, Computer Science, Cybersecurity or related discipline

Tools

Microsoft 365

Azure

Entra ID

Microsoft Defender

Intune

SentinelOne

JAMF

Job description

KOS International Limited is seeking a Systems & Security Engineer in Hong Kong to support day-to-day cybersecurity operations and IT infrastructure. The role administers security controls across firewalls, Microsoft 365, Azure and endpoint systems, monitors security alerts and helps protect sensitive user data.

This hands-on position suits an experienced system/infrastructure professional expanding into information security, with opportunities to work closely with vendors and the SOC on