Remote Sr. Systems Engineer

Computer World Services Corp.; Santa Cruz de Tenerife; Remote; EUR 42,000 - 56,000; Full time

Job summary

Computer World Services Corp. in the Canary Islands region is seeking an experienced IT systems administrator to support Windows, cloud, virtualization and storage environments.

You will implement best practices to design, deploy, secure and sustain high-availability IT solutions aligned with operational objectives. Key duties include Active Directory/Entra ID administration in hybrid environments, Microsoft 365 management, virtualization optimization, PowerShell automation, and Windows

Qualifications

• Experience administering Active Directory/Entra ID in a hybrid environment and managing AD health checks.
• Knowledge of PKI, CAC/ALT-token authentication, and certificate lifecycle management.
• Experience with Microsoft 365 administration in hybrid environments (Exchange Online, Teams, OneDrive).
• Strong virtualization experience and ability to optimize VMware, Horizon, and VXRail environments.
• Windows systems administration using PowerShell, scripting and automation.
• Desktop/Laptop deployment and management.
• AWS Windows instances deployment/administration a plus;
• SCCM (MECM) / Intune administration in co-managed environments with patching and reporting.
• Ability to document system diagrams and SOPs.
• Experience conducting integration testing, transitions to production, and training.

Responsibilities

• Administer and maintain AD/Entra ID, GPOs, user accounts and security groups.
• Manage DHCP/DNS and file permissions; implement least-privilege access; automate with PowerShell.
• Administer Office 365 Hybrid: Exchange Online, Teams, OneDrive; manage licenses.
• Oversee virtualization platforms and optimize performance.
• Perform Windows administration and desktop deployment tasks.
• Coordinate with contractors and government organizations at system interfaces.
• Develop system diagrams and SOPs; support testing and transition to production.

Skills

Active Directory

Entra ID

Hybrid environment

FSMO roles

Replication

OU management

PKI

CAC/ALT-token

Certificate lifecycle

Microsoft 365

Exchange Online

Teams

OneDrive

Virtualization

VXRail

VMware

Horizon

PowerShell

Scripting

Automation

Desktop deployment

Windows administration

AWS Windows

SCCM/MECM

Intune

Patch management

Documentation

SOPs

Tools

VXRail

VMware

Horizon

PowerShell

MECM

Intune

AWS

Job description

The contractor will support OFR’s efforts to engineer, build, configure and maintain the OFR’s Windows, Cloud, Virtualization and Storage systems following best practices to better ensure that OFR designs, deploys and sustains secure, high quality, highly available information technology solutions that align with operational objectives.

Duties include but not limited to:

• Expert in Active Directory/Entra ID administration in a Hybrid Environment

• Proficiency in Active Directory administration, FSMO roles, replication, and OU management
• Knowledge of PKI, CAC/ALT-token authentication, and certificate lifecycle management

• Expert in Microsoft 365 Management (Hybrid) administration including Exchange Online, Teams, and OneDrive for Business.
• Experienced in Virtualization; Manage and optimize virtualization platforms (e.g., VXRail/VMware/Horizon).
• Systems administration of Windows systems using PowerShell, scripting, and automation.
• Desktop/Laptop deployment and management.
• Amazon Web Services Windows instances deployment and administration - a plus
• SCCM (MECM) / Intune administration in a co-managed environment, including patching, package prep and deployment and reporting on Windows devices - a plus
• Documentation, development of system diagrams and SOPs
• Conducting integration testing, transition and acceptance and training from the Engineering phase to the production phase.

Coordinate activities at the system interface boundaries with other contractors and Government organizations.

Key Tasks & Responsibilities

Microsoft Active Directory: Administer and maintain Active Directory (AD) and Group Policy Objects (GPOs). Manage user accounts, permissions, and security groups. Implement AD best practices and troubleshoot AD-related issues. Perform regular AD health checks and ensure system integrity. Administer DHCP, DNS, and file/directory permissions. Utilize PowerShell for automation, reporting, and system management. Manage folder and file share permissions following least‑privilege principles.

Office 365 Management (Hybrid): Administer Office 365 environment, including Exchange Online, Teams, and OneDrive for Business. Manage user accounts, licensing,