Senior Cyber Security Infra Lead IT Systems Admin (Contract)

Hadfieldgreen is seeking a Senior IT Systems Administrator in Dublin, Ireland. This contract role focuses on leading Cyber Security infrastructure initiatives in a critical operational environment. Responsibilities include developing security-driven infrastructure, managing vulnerability assessments, and mentoring junior staff. Ideal candidates will possess MCSA or CCNA certifications, strong knowledge of Windows Server, Active Directory, and relevant automation tools. This position is integral to achieving regulatory expectations and availability requirements.