Senior System Administrator

About the role

We are looking for a Senior System Administrator to join a fast‑growing software company in Dublin on a six‑month contract, with the possibility of extension. You will be responsible for the design, implementation and day‑to‑day management of our cloud‑based productivity and identity platforms.

Key responsibilities

• Administer Google Workspace, including directory management, mail routing, identity and security settings.
• Manage Microsoft 365 services, Entra ID (Azure AD) and Exchange Online.
• Configure and maintain Single Sign‑On (SSO) solutions and identity federation using SAML and OIDC across multiple SaaS applications.
• Deploy and support Mobile Device Management (MDM) for both macOS and Windows devices using Addigy and Microsoft Intune.
• Collaborate with development and security teams to ensure seamless authentication flows and compliance.

Required profile

• Proven senior‑level experience in system administration within a cloud‑focused environment.
• Strong understanding of identity and access management concepts.
• Ability to work independently and troubleshoot complex integration issues.

Required skills

• Google Workspace administration
• Microsoft 365, Entra ID (Azure AD) and Exchange Online
• SSO platforms, SAML, OIDC
• SaaS authentication management
• Addigy MDM
• Microsoft Intune