Senior Infrastructure / Systems Engineer - Dublin

Position: Senior Infrastructure / Systems Engineer
Please make an application promptly if you are a good match for this role due to high levels of interest.
Location: Dublin

We are seeking an experienced Infrastructure / Systems Engineer to support, maintain, and enhance a mixed on-premises, cloud, and hybrid IT environment. This role requires hands-on capability across infrastructure, virtualization, networking, and security, with the ability to work closely with engineers and business stakeholders in a fast-paced environment. The successful candidate will demonstrate excellent troubleshooting skills, strong documentation practices, and the ability to remain calm and effective when dealing with incidents or tight deadlines.

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• Administration and support of Windows Server and Linux (SLES and RHEL) environments
  
• Active Directory, Group Policy, DNS, and DHCP management
  
• Experience with ManageEngine AD Manager is beneficial
  
• Virtualisation platforms: VMware, Hyper-V, and Nutanix
  
• Server hardware support, including HPE and Dell servers
  
• RAID configuration, firmware updates, and lifecycle management
  

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• Solid understanding of TCP/IP, VLANs, routing, and switching
  
• Firewall and VPN technologies, including Cisco, Meraki, FortiGate
  
• Wi-Fi infrastructure deployment, support, and troubleshooting
  
• Basic network monitoring, diagnostics, and fault resolution
  
• Experience with Cisco Meraki environments is highly desirable
  

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• Experience with Azure (or AWS) fundamentals, including virtual machines, networking, and storage
  
• Identity and access management integration: Azure AD / Entra ID
  
• Hybrid connectivity solutions, including site-to-site VPNs
  
• Hybrid and cloud-based backup solutions
  
• Knowledge of Zscaler technologies: ZIA (Zscaler Internet Access) and ZPA (Zscaler Private Access)
  

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• Patch management and endpoint security practices
  
• Experience with ManageEngine Endpoint Central is advantageous
  
• Strong understanding of access control, MFA, and least- privilege principles
  
• Backup, disaster recovery, and ransomware protection strategies
  
• Awareness of recognised security frameworks, such as ISO 27001, NIST, or similar standards
  

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• Support of CAD/CAE applications, including AutoCAD, SolidWorks, or similar engineering tools
  
• Licence server management: FlexNet, Sentinel
  
• High-performance workstations and compute-intensive workloads
  
• Storage performance considerations for large engineering and design files
  
• Knowledge of SAP infrastructure is beneficial
  
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• Scripting and automation using PowerShell and/or Bash
  
• Monitoring tools such as PRTG
  
• Log analysis, alerting, and incident response
  
• Proactive identification of performance, capacity, and availability issues
  

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• Strong documentation skills and adherence to change management processes
  
• Ability to work effectively with engineers under tight deadlines
  
• Methodical problem-solving approach and calm troubleshooting style
  
• Experience liaising with vendors and managing escalations
  
• Clear communication skills for both technical and non-technical audiences
  

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• Microsoft certifications (Azure Administrator, Windows Server)
  
• VMware VCP
  
• Cisco CCNA
  
• ITIL Foundation