IT Senior Systems Administrator

Berkley Group; Cork; In loco; EUR 70.000 - 95.000; Tempo pieno

Descrizione del lavoro

Berkley Group in Cork, Ireland is hiring a Senior Systems Administrator for a contract role onsite 3-4 days per week. You will manage and secure enterprise IT infrastructure, ensuring high availability, performance and reliability.

Responsibilities include maintaining Windows/Linux servers, VMware/Hyper-V, AD/GPO/DNS/DHCP, MS 365, and network security with firewalls. Strong scripting and DR/backup expertise required. Onsite attendance and own transport essential.

Competenze

• 5+ years' experience in Systems Administration or IT Infrastructure.
• Strong Windows Server, VMware and Hyper-V experience.
• Knowledge of Active Directory, GPO, Azure and Microsoft 365.
• Experience with networking, firewalls, backup and disaster recovery.
• Familiarity with Intune, Azure MFA and Conditional Access.
• PowerShell/Bash scripting experience.

Mansioni

• Manage and maintain Windows/Linux servers, VMware and Hyper-V environments.
• Administer Active Directory, Group Policy, DNS, DHCP and Microsoft 365.
• Manage network infrastructure, including Cisco and Palo Alto firewalls, switches and wireless.
• Oversee backups, replication and disaster recovery solutions.
• Monitor system performance, troubleshoot issues and resolve escalated L1.5 support tickets.
• Implement security policies, patching, MFA and Conditional Access.
• Automate administrative tasks using PowerShell and Bash.
• Maintain technical documentation and coordinate with third-party vendors.

Conoscenze

Windows Server

VMware

Hyper-V

Active Directory

GPO

DNS

DHCP

Microsoft 365

Networking

Firewalls

Backups/DR

Intune

Azure MFA

Conditional Access

PowerShell

Bash

Documentation

Vendor coordination

CCNA/CCNP

CyberArk

CrowdStrike

Strumenti

Cisco

Palo Alto

Descrizione del lavoro

Location: Cork, Ireland (Onsite 3-4 days per week)

We are seeking an experienced Senior Systems Administrator for a contract role based in Cork. The successful candidate will be responsible for managing, maintaining and securing enterprise IT infrastructure, ensuring high availability, performance and reliability.

Key Responsibilities:

• Manage and maintain Windows/Linux servers, VMware and Hyper-V environments.
• Administer Active Directory, Group Policy, DNS, DHCP and Microsoft 365.
• Manage network infrastructure, including Cisco and Palo Alto firewalls, switches and wireless.
• Oversee backups, replication and disaster recovery solutions.
• Monitor system performance, troubleshoot issues and resolve escalated L1.5 support tickets.
• Implement security policies, patching, MFA and Conditional Access.
• Automate administrative tasks using PowerShell and Bash.
• Maintain technical documentation and coordinate with third-party vendors.

Key Requirements:

• 5+ years' experience in Systems Administration or IT Infrastructure.
• Strong Windows Server, VMware and Hyper-V experience.
• Knowledge of Active Directory, GPO, Azure and Microsoft 365.
• Experience with networking, firewalls, backup and disaster recovery.
• Familiarity with Intune, Azure MFA and Conditional Access.
• PowerShell/Bash scripting experience.
• Strong troubleshooting, communication and problem-solving skills.
• CCNA/CCNP, CyberArk and CrowdStrike experience.

Important: This role requires onsite attendance 3-4 days per week. A full driving licence and access to your own vehicle are essential.