ABDULHALIM AHMAD KHEDER
System Administrator
Kuwait City
Summary
Senior System Administrator with 22 years of hands-on experience managing Windows, Linux, and Microsoft Azure hybrid environments. Strong expertise in Active Directory, Microsoft 365, Exchange, virtualization platforms, and enterprise security controls. Proven ability to maintain stable, secure, and highly available infrastructure supporting critical business operations.
Overview
25
25
years of professional experience
Work History
Senior Systems Administrator
Kuwait Ministry Of Health (MOH)
01.2011 - Current
- Administer and support for [3000] Windows and Linux servers in enterprise production environments, ensuring system stability and uptime.
- Manage Active Directory infrastructure with [200] GPOs, DNS zones, and DHCP scopes, maintaining secure network operations.
- Administer Azure AD (Entra ID) securing hybrid identity for [20000] users with MFA, RBAC, and Conditional Access policies.
- Support Microsoft Azure and Microsoft 365 / Office 365 services for users and workloads.
- Manage Exchange environments (on-prem, hybrid, and online), including mail flow and user administration.
- Operate and maintain virtualized infrastructure using VMware ESXi, Nutanix AHV, and Hyper-V.
- Apply security hardening, patching, and certificate management to meet compliance and security requirements.
- Use PowerShell and Bash to automate administrative tasks and improve operational efficiency.
- Support Citrix Workspace for secure user access to applications and desktops.
- Build DATA CENTER To Dental and Clinics
- Support Microsoft Azure and Microsoft 365 services for [20000] users, optimizing cloud workloads and collaboration tools.
System Administrator
Advanced Technology Company (ATC)
01.2003 - 01.2011
- Administer and support Windows in enterprise production environments.
- Manage Active Directory infrastructure including GPOs, DNS, and DHCP, ensuring secure authentication and authorization.
- Apply security hardening, patching, and certificate management to meet compliance and security requirements.
- Build Data Center For Hospitals
- Build Data Center For Dental Centers
- The end-to-end total healthcare and environmental solutions provider
- Www.atc.com.kw
System Administrator
City Company
01.2001 - 01.2003
- Manage Server, clients and applications infrastructure
Education
Professional Technical Training - Systems Administration Windows, Linux, Microsoft Azure & Enterprise Infrastructure
School or University
Diploma - Information Technology
Info Center
01.2001
Skills
- Operating Systems
- Windows Server
- Linux
- Identity & Access Management
- Active Directory
- Group Policy Objects
- DNS
- DHCP
- Azure AD / Microsoft Entra ID
- Multi-Factor Authentication
- Role-Based Access Control
- Conditional Access
- Cloud & Microsoft 365
- Microsoft Azure
- Azure Virtual Machines
- Azure Networking
- Microsoft 365 / Office 365 Administration
- Virtualization
- VMWare vSphere / ESXi
- Nutanix AHV
- Microsoft Hyper-V
- Messaging & Collaboration
- Microsoft Exchange Server
- Microsoft Exchange Hybrid
- Exchange Online
- Microsoft 365
- Security & Compliance
- Patch Management
- TLS & Certificate Management
- Endpoint Protection
- CIS Security Hardening
- Automation & Tools
- PowerShell
- Bash
- Monitoring & Backup Tools
- End-User & Application Access
- Citrix Workspace
- Incident management
Accomplishments
- 22 years of continuous experience in system and infrastructure administration.
- Strong background in hybrid cloud and on-premises environments.
- Improved security posture through MFA, Conditional Access, and CIS hardening practices.
- Supported stable enterprise environments using VMware, Nutanix, and Hyper-V platforms.
LANGUAGES
English - Proficient
Arabic - Native
Timeline
Senior Systems Administrator
Kuwait Ministry Of Health (MOH)
01.2011 - Current
System Administrator
Advanced Technology Company (ATC)
01.2003 - 01.2011
System Administrator
City Company
01.2001 - 01.2003
Diploma - Information Technology
Info Center
Professional Technical Training - Systems Administration Windows, Linux, Microsoft Azure & Enterprise Infrastructure
School or University
TRAINING / COURSES
- Microsoft Windows Server Administration
- Microsoft Azure Administration
- Microsoft Certified Soulution Expert
- Microsoft Certified Solutions Associate
- Azure Fundamentals
- Administering Windows Server Hybrid Core Infrastructure
- Nutanix Certified Associate
- Nutanix Certified Professional - Multicloud Infrastructure