Commercial
Infrastructure Support

Infrastructure Specialist / Senior System Engineer (Active Directory, over $60K)

Full Time
Sham Shui Po
,
,
clts05292
Posted on:
2026-03-22

Duties

  • Design, implement, support, and maintain email systems and their integrations.
  • Review and improve Active Directory (AD), DNS, and related platforms.
  • Support, test, and monitor AD, DNS, server clustering, DFS, and related services.
  • Develop automation scripts (e.g., PowerShell) for daily tasks.
  • Perform daily operations across AD forests/domains to ensure system health.
  • Tune performance, manage upgrades, and optimize resources.
  • Monitor AD and Windows servers using custom or standard tools; respond quickly to alerts.
  • Maintain strong knowledge of security, networking, and DNS principles.
  • Manage and troubleshoot Group Policy Objects (GPOs) at enterprise scale.
  • Set up and maintain testing environments.
  • Assist with IT project and vendor management; provide administrative support and deliverables.
  • Work outside office hours and provide on-call support when needed.
  • Oversee server patch management; coordinate with departments on rollouts and issue resolution.

Requirements

  • Higher Diploma or above in IT or related subjects
  • Minimum of 4 years of hands-on working experience in system implementation, maintenance and support of enterprise level Microsoft Active Directory infrastructure, DNS, GPOs, cross-AD forests/domains support.
  • Minimum of 4 years of hands-on working experience in management, implementation, support, and upgrade of Microsoft Active Directory.
  • Minimum of 4 years of hands-on working experience in implementation and support of Microsoft Windows Server 2016, 2019 and 2022.
  • Minimum of 1 year of working experience in implementation and support of security risk assessment and audit.
  • Good command in spoken and written English is required.

If you are interested in this position, please email your resume, stating your current and expected salary along with your available date, to our Application Email Address:

ita@clts.com

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Application Deadline:
2026-04-23
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Infrastructure Specialist / Senior System Engineer (Active Directory, over $60K)

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Terms

I hereby certify that the information provided in this application is accurate to the best of my knowledge and subject to verification by CL Technical Services Limited.

I authorize the schools, persons, current and previous employers and other organizations named in this application to provide CL Technical Services Limited (Its authorized employees, agents or representatives) with any relevant information that may be required to arrive at an employment decision, and hereby release any such schools, persons, current and previous employers and organizations from any and all liability which they might otherwise incur to me as a result.

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* CL Group includes CL Technical Services Limited & CL Smart Sourcing Limited

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