Systems Engineer ;7+ years enterprise server and infrastructure administration/design including operating and designing large, complex on‑prem environments.
Demonstrated experience leading infrastructure upgrade and overhaul programmes.
Strong understanding of enterprise cyber‑security risks and mitigations.
Experience working in regulated or high‑security environments.
We are seeking a highly experienced and exceptionally qualified Server Administrator to manage, modernise, and secure a complex hybrid infrastructure environment spanning on‑premises datacentres and Microsoft 365 / Azure.
Act as a consultant for direction and guidance as well as work within projects as a technician
Responsibilities:
Firmware patching work planning and implementation (iLo, iDrac, switches, firewalls, routers, SAN, other hardware)
Point of contact for IT team for advanced escalations
Overhauling legacy server infrastructure, environment and configurations with cyber security as the priority
Performance tuning at hypervisor, host, and guest OS level
Planning for migration of existing servers to the cloud
On‑Premises Infrastructure management
Forest/domain design and trust models
Group Policy hardening
Active Directory overhaul
AD security posture (LAPS, RBAC)
Troubleshoot complex cluster and VM performance issues.
Review of server resources and recommendations on improvements
Driving security‑first architecture and operations
Ensuring resilience, performance, and cyber‑security compliance
Design and administer Azure IaaS, PaaS and hybrid workloads, including:
Azure Virtual Machines
Azure Networking
Azure Backup, Site Recovery, and monitoring
Work closely with SOC and security teams during:
Incident response
Forensic investigations
Post‑incident remediation
Call Lindsay O’Leary for further spec details. 00 353 86 8311808
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