Windows Administrator (m/f/d)

Halian | Managed Services, Recruitment Agency & Contract Staffing


Date: 2 weeks ago
City: Remote
Contract type: Full time
Remote
Role Purpose

The Windows Server & Active Directory Security Administrator is responsible for managing and securing enterprise Windows environments. This includes patch management using WSUS/SCCM, Active Directory security hardening, and enforcing security baselines across 10,000+ endpoints. The role ensures systems remain compliant with internal security standards and industry benchmarks (e.g., CIS), while maintaining high availability and security posture.

Key Responsibilities

Windows Server Patch Management

  • Oversee end-to-end patch management lifecycle for Windows Servers using WSUS and SCCM
  • Ensure timely deployment of OS and application patches across large-scale environments
  • Monitor patch compliance and generate reports for audits and management review
  • Troubleshoot patch deployment failures and implement remediation plans
  • Align patching practices with CIS Benchmarks and internal policies

Active Directory Security & Hardening

  • Implement and maintain Active Directory (AD) security best practices, including:
    • Privileged Access Management (PAM)
    • Role-Based Access Control (RBAC)
    • Secure Kerberos configuration and policies
  • Conduct periodic reviews of:
    • User access rights and privileged accounts
    • Group memberships and service accounts
  • Identify and remediate AD vulnerabilities and misconfigurations

Group Policy & Endpoint Security Baselines

  • Design and enforce Group Policy Objects (GPOs) for enterprise-wide security configurations
  • Implement security baselines across 10,000+ endpoints (servers and workstations)
  • Ensure systems comply with:
    • Internal security standards
    • CIS Benchmark configurations
  • Continuously monitor and fine-tune GPOs for efficiency and compliance

Compliance & Security Operations

  • Ensure infrastructure adheres to internal security policies and regulatory requirements
  • Support internal and external audits by providing evidence of patching and configuration compliance
  • Maintain documentation of system configurations, patch status, and AD changes
  • Collaborate with cybersecurity teams to respond to vulnerabilities and incidents

Infrastructure Maintenance & Support

  • Maintain and support Windows Server environments (on-premises and hybrid)
  • Perform regular system health checks and proactive maintenance
  • Support identity and access management processes within AD
  • Participate in infrastructure improvement initiatives and automation efforts

Qualifications & Experience

Education

  • Bachelor’s degree in:
    • Information Technology
    • Computer Science
    • Networking or related field
Experience

  • 4–8+ years of experience in:
    • Windows Server Administration
    • Active Directory management in large enterprise environments
  • Proven experience managing 10,000+ endpoints is highly preferred
  • Hands-on experience with:
    • WSUS and SCCM for patch management
    • GPO design and enforcement
Technical Skills

  • Strong knowledge of:
    • Windows Server OS (2016/2019/2022)
    • Active Directory architecture and security
    • Kerberos authentication and policies
  • Experience with:
    • CIS Benchmarks and system hardening practices
    • Endpoint security configuration and compliance tools
  • Familiarity with:
    • Hybrid environments (on-prem + Azure AD)
    • PowerShell scripting for automation
Soft Skills

  • Strong problem-solving and troubleshooting ability
  • Attention to detail with a strong security mindset
  • Ability to manage tasks in large, complex environments
  • Effective communication and teamwork skills

Certifications (Preferred / Required)

  • Microsoft Certified: Windows Server Hybrid Administrator Associate
  • Microsoft 365 Certified: Security Administrator Associate
  • Additional certifications (nice to have):
    • Microsoft Certified: Azure Administrator Associate
    • CISSP / Security+
Key Competencies

  • Patch Management & Compliance
  • Active Directory Security
  • Endpoint Security Management
  • GPO & Policy Enforcement
  • Infrastructure Stability & Operations
  • Risk Awareness & Mitigation

Windows Administrator in Abu Dhabi, United Arab Emirates

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