Senior Windows Systems Engineer
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Salary
$75k – $115k per year (gross)
Location
In office (Singapore)
Seniority
Senior · 8+ years exp
Employment
Contractor
First seen by Alion on Oct 20, 2026.
Overview
Company
Impact
Profile match
Optimum Solutions is an IT services and outsourcing company headquartered in Singapore that provides software engineering, application development and maintenance, data and analytics, cloud and infrastructure, testing and global capability centre services. Founded in 1997, it reports more than 4,000 employees across offices and delivery centres in nine countries, including India and China, and supplies contract IT staff to banks and global technology clients. Its Singapore listings cover Java and .NET developers, DevOps and GenAI engineers, business analysts, scrum masters, UX designers, compliance associates and contract privacy support and AI video roles.
About the Role
Design, manage, and automate secure Windows infrastructure and Active Directory environments, leveraging advanced PowerShell scripting and AI-assisted tools to streamline IT operations and reduce manual workloads.
Key Responsibilities
- Infrastructure Management: Provision, configure, and maintain on premise as well as Cloud environments: Windows VMs, high-availability clusters, and core server roles (DNS, DHCP, Certificate Services).
- Active Directory Administration: Oversee end-to-end AD operations, including Group Policy (GPO), Sites & Services, migrations, authentication mechanisms, and backup/recovery.
- AI & Automation: Develop, test, and maintain PowerShell runbooks to automate server provisioning, health checks, and remediation. Utilize AI tools for assisted scripting, log analysis, and anomaly detection.
- Security & Governance: Harden Windows environments and ensure strict compliance with institutional IT policies (e.g., SG-TRM, IM8). Manage automation scripts via secure version-control and change-management processes.
- Collaboration & Support: Act as the primary technical point of contact for new infrastructure initiatives. Create detailed technical documentation and drive knowledge transfer to operational teams.
Qualifications & Skills
- Strong hands-on background in Windows Server and Microsoft Active Directory engineering.
- Strong experience in Azure and GCC Cloud environments
- Advanced proficiency in PowerShell scripting and translating manual operational processes into reliable, repeatable automation.
- Practical experience integrating AI tools or AIOps platforms into infrastructure operations and troubleshooting.
- Deep expertise in root-cause analysis, complex system troubleshooting, and supporting highly available, secure environments.
- Experience with GCC Active Directory and Remote Desktop Services integration.
Skills
Active Directory Federation Services, Active Directory, Powershell Scripting, PowerShell, VMware, Scripting, Intelligent Automation, Windows Server, Log Analysis, Infrastructure Architecture, Automated Scripts, Ansible, Systems Engineering, Infrastructure Management, DNS, Technical Support
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