Senior Engineer, IT (Ref 26568)

JOBLINE RESOURCES PTE. LTD.; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

JOBLINE RESOURCES PTE. LTD. in Singapore is seeking a Windows Server Specialist to administer and maintain Windows Server 2016/2019/2022 environments, with a focus on Active Directory, DNS, and Group Policy.

The role includes server builds, patching, backups, monitoring, and issue resolution across security, network, and applications teams. Strong PowerShell scripting and solid documentation are essential to streamline operations and support lifecycle management.

Qualifications

• Strong hands-on experience administering Windows Server 2016/2019/2022.
• Experience with Active Directory, DNS, Group Policy, DHCP, and Certificate Authority.
• Proficiency in PowerShell for automation.
• Familiarity with IT service management processes (incident/change/problem).
• Excellent troubleshooting and documentation skills.

Responsibilities

• Administer and maintain Windows Server environments.
• Monitor health, performance, capacity; perform patching and backups.
• Manage AD, DNS, Group Policy, and DHCP configurations.
• Provide L2/L3 support for infrastructure incidents and troubleshooting.
• Automate routine tasks using PowerShell.
• Maintain and update technical documentation and runbooks.

Skills

Windows Server administration

Active Directory

DNS

Group Policy

PowerShell scripting

Troubleshooting

Incident management

Documentation

Security/compliance

Tools

DHCP

Certificate Authority

Group Policy Management Console

AD Administrative Center

Job description

Responsibilities

• Administer and maintain Windows Server 2016, 2019, and 2022 environments.
• Perform server installation, configuration, patching, maintenance, backup checks, and troubleshooting.
• Monitor server health, performance, availability, and capacity.
• Support server upgrades, system refreshes, and lifecycle management activities.
• Analyse system logs, event logs, and performance data to identify and resolve technical issues.
• Maintain technical documentation, operational procedures, and configuration records.

Active Directory, DNS, and Group Policy

• Manage and maintain Active Directory Domain Services, including user accounts, security groups, organisational units, permissions, and domain access.
• Administer and troubleshoot Group Policy Objects to enforce security settings, configuration standards, and operational requirements.
• Manage and support DNS services, including name resolution, zone management, records, replication, and troubleshooting.
• Support related core infrastructure services such as DHCP, Certificate Authority, authentication, and access control.
• Ensure Active Directory, DNS, and Group Policy configurations are secure, reliable, and properly documented.

Security, Compliance, and Patch Management

• Apply security updates, server patches, and configuration changes in line with organisational standards.
• Perform server hardening and support vulnerability remediation activities.
• Review system and security logs to identify potential risks, misconfigurations, or suspicious activities.
• Ensure server, Active Directory, DNS, and Group Policy configurations comply with internal security policies and audit requirements.
• Support audit preparation, compliance reporting, and remediation of security findings.

Incident Support and Troubleshooting

• Provide Level 2 and Level 3 support for Windows server and infrastructure-related incidents.
• Troubleshoot issues involving servers, Active Directory, DNS, Group Policy, authentication, and access control.
• Perform root cause analysis for recurring or complex technical problems.
• Work with application, network, security, and service management teams to restore services and prevent recurrence.
• Support change management activities, including planning, implementation, validation, and post-change review.
• Work with security teams to address risks, resolve audit or vulnerability findings, and improve the organisation’s overall security posture.

Automation and Continuous Improvement

• Develop and maintain PowerShell scripts to automate routine administrative tasks.
• Automate activities such as health checks, reporting, patch validation, log review, and account administration.
• Identify opportunities to improve operational efficiency, system reliability, and support processes.
• Contribute to infrastructure improvement, system integration, and modernisation initiatives.

Requirements

• Strong hands-on experience in Windows Server 2016, 2019, and/or 2022 administration.
• Experience managing Active Directory, DNS, Group Policy, DHCP, and Certificate Authority services.
• Good understanding of domain services, authentication, access control, and name resolution.
• Experience with server build, configuration, patching, backup, monitoring, and troubleshooting.
• Ability to provide L2/L3 infrastructure support and resolve escalated technical issues.
• Working knowledge of server hardening, patch management, vulnerability remediation, and compliance requirements.
• PowerShell scripting experience for automation and operational support.
• Familiarity with IT service management processes such as incident, problem, change, and request management.
• Strong troubleshooting, documentation, and communication skills.

Licence no : 12C6060