A leading organisation is seeking an experienced Senior IT Systems Administrator to join its internal IT Operations function. This role will play a key part in delivering a critical Cyber Security programme while also supporting ongoing business-as-usual (BAU) infrastructure activities.
Job Title: Senior IT Systems Administrator (Contract)
Location: Dublin, Ireland – 3 Days Per Week On-Site
Contract Length: 6 Months - Extendable up to 12 Months
Start Date: End of May / Early June
Key Responsibilities
Support and maintain core IT infrastructure, with a focus on Microsoft technologies
Contribute to the delivery of a Cyber Security programme of work
Provide ongoing BAU support across systems, networks, and platforms
Work closely with the IT Operations team to ensure stability, performance, and security of systems
Assist in implementing security controls, policies, and best practices
Troubleshoot and resolve infrastructure and system-related issues
Support system upgrades, patching, and continuous improvements
Basic Requirements
Strong experience as an IT Systems Administrator in enterprise environments
Solid understanding of IT infrastructure, networking, and system administration principles
Experience supporting and maintaining secure environments
Ability to manage BAU activities alongside project-based work
Strong troubleshooting and problem-solving skills
Additional Requirements
Relevant technical certifications are desirable (details available upon request)
Ideal Profile
Hands-on, proactive systems administrator with a strong Microsoft background
Comfortable working within a collaborative IT Operations environment
Experience contributing to cyber security initiatives or programmes
Able to balance operational support with project delivery
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