OverviewPosition: Senior Infrastructure / Systems EngineerLocation: DublinWe 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.
Core Systems & Infrastructure
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
Networking Knowledge
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
Cloud & Hybrid Environments
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)
Security & Compliance
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
Engineering-Specific Systems
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
Automation & Monitoring
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
Soft Skills (Essential)
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
Desirable Certifications
Microsoft certifications (Azure Administrator, Windows Server)
VMware VCP
Cisco CCNA
ITIL Foundation
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