Senior IT Systems Administrator

Morgan McKinley; Cork; Hybrid; EUR 85,000 - 110,000; Full time

Benefits offered by this job

Work From Home

Job summary

Morgan McKinley in Cork, Ireland, seeks a Senior IT Systems Administrator to be the technical owner of our client’s internal IT environment. You will own cloud infrastructure, identity management, zero-trust security, and the SaaS ecosystem, while mentoring a Help Desk Technician.

This role drives IT strategy, streamlines vendor costs, and builds a secure, scalable platform for growth with a high degree of autonomy.

Qualifications

• 6+ years in IT systems administration or infrastructure engineering.
• Experience with Entra ID (Azure AD), Intune MDM on Windows/macOS.
• Hands-on experience owning security controls, EDR tools (SentinelOne), and SOC 2/ISO audit readiness.

Responsibilities

• Architect, secure, and scale core systems and identity across Windows/macOS.
• Own identity management and device management.
• Lead vendor negotiations and optimize software spend.
• Mentor the Help Desk Technician and establish SLAs.
• Automate onboarding/offboarding and act as final escalation point.

Skills

Azure AD Entra ID

Intune MDM

EDR SentinelOne

SOC 2 / ISO 27001

Vendor negotiations

Tools

PowerShell

Bash

Python

NetSuite

Salesforce

MS Purview

Job description

Senior IT Systems Administrator

Location: Cork, Ireland (Hybrid: 2-3 days on-site)

Reporting To: Chief Financial Officer (CFO)

Direct Reports: Help Desk Technician

The Role As Senior IT Systems Administrator, you will be the technical architect and operational owner of our clients internal IT environment. Reporting directly to the CFO, you will own the cloud infrastructure, identity management, zero-trust security, and SaaS ecosystem, while mentoring a Help Desk Technician. This is a high-autonomy, hands-on role for a senior engineer ready to drive IT strategy, streamline vendor costs, and build a secure, scalable platform for growth.

Key Responsibilities

Infrastructure & Identity: Architect, secure, and scale core systems. Own identity and device management across Windows and macOS (Entra ID, Intune MDM).

Security & Compliance: Enforce Zero-Trust architectures, lead SOC 2 / ISO 27001 audit readiness, and establish security policies for enterprise AI tools.

SaaS & Vendor Strategy: Manage the SaaS ecosystem (O365, Salesforce, NetSuite, etc.). Partner with the CFO to lead vendor negotiations, eliminate tool sprawl, and optimize software spend.

Team Leadership: Mentoring and developing the Help Desk Technician; establishing SLAs and shifting support from reactive to proactive.

Operations & Automation: Automate onboarding/offboarding workflows, maintain asset inventories, and act as the final escalation point for critical IT issues.

What You Bring

Required 6+ years in IT systems administration or infrastructure engineering. Expertise in Entra ID (Azure AD), Intune MDM, and mixed Windows/macOS environments. Hands-on experience owning security controls, EDR tools (e.g., SentinelOne), and compliance audit readiness (SOC 2/ISO). Strong technical judgment, independent decision-making, and experience mentoring junior IT staff. Resident in/near Cork for hybrid office presence.

Preferred Experience

Experience in high-growth, SaaS, or Private Equity (PE)-backed environments. Scripting/automation skills (PowerShell, Bash, or Python). Familiarity with enterprise SaaS platforms (NetSuite, Salesforce, MS Purview) and vendor contract negotiation.

Skills: Intune

Benefits

Work From Home TPBN1_IJ