Global Defender Rollout Lead — 6-Month Infra & Security

Argyll Scott; Singapore; On-site; SGD 100,000 - 201,000; Part time

Job summary

Argyll Scott is seeking a Senior Infrastructure and Security Engineer for a 6-month contract in Singapore. The role focuses on hands-on rollout of Microsoft Defender for Servers across a large Windows estate, with a smaller Linux footprint, and includes retiring old agents while maintaining continuous protection.

You will work with country IT teams, PMs, and an Architect to plan deployment waves. You should have 8+ years in infrastructure/security, strong Windows Server and Linux skills, and be

Qualifications

• 8+ years in infrastructure, server administration or security engineering.
• Hands-on deployment of Defender or other endpoint security agents across a large Windows server estate.
• Strong Windows Server skills; practical Linux knowledge.
• Proficiency with PowerShell and KQL or quick learner.
• Ability to work independently with stakeholders across multiple countries.
• Immediate availability.
• Experience with SentinelOne migration, Azure Arc and Japanese is a plus.
• Security certifications (e.g., Microsoft security, CISSP, Security+) are a plus.

Responsibilities

• Roll out Defender for Servers across the Windows estate wave by wave, reducing Linux footprint.
• Retire existing endpoint security agent in sequence without gaps in protection.
• Troubleshoot onboarding, connectivity, policy and agent issues till closure.
• Coordinate install windows with country IT teams across time zones.
• Report progress using PowerShell and KQL evidence.
• Create runbooks, support hypercare, and hand over to operations.

Skills

Windows Server

Linux

PowerShell

KQL

Azure Arc

Japanese

Security certifications

Microsoft Defender

CrowdStrike

SentinelOne

Trellix

Trend Micro

Tools

Microsoft Defender for Servers

CrowdStrike

SentinelOne

Trellix

Trend Micro

PowerShell

KQL

Job description

Argyll Scott is seeking a Senior Infrastructure and Security Engineer for a 6-month contract in Singapore. The role focuses on hands-on rollout of Microsoft Defender for Servers across a large Windows estate, with a smaller Linux footprint, and includes retiring old agents while maintaining continuous protection.

You will work with country IT teams, PMs, and an Architect to plan deployment waves. You should have 8+ years in infrastructure/security, strong Windows Server and Linux skills, and be