Senior Systems Administrator — Hybrid, Growth & Wellbeing

CrowleysDFK; Dublin; Hybrid; EUR 65,000 - 90,000; Full time

Benefits offered by this job

Flexible working hours

Hybrid working structure

Work from Anywhere policy

Competency and Career Paths Framework

Learning & Development Programme

Health and wellbeing initiatives and培训

Sports & Social Team

Charity Partner

3pm finish Fridays

Birthday day off

Job summary

Crowleys DFK is seeking a Senior Systems Administrator for our Dublin office. The role is hybrid (2 days in-office), full-time, 37.5 hours per week, focusing on managing infrastructure, cybersecurity, and Microsoft 365 environments.

You will work on governance, compliance, and cloud migrations, collaborating with a professional services team in a regulated environment. Relevant certifications and strong problem-solving skills are encouraged.

Qualifications

• 5+ years in systems/infrastructure administration.
• 2+ years in a Senior Systems Administrator role.
• Strong knowledge of AD/Entra and identity management.
• Networking, firewalls, VPNs and endpoint security understanding.

Responsibilities

• Manage and monitor core IT infrastructure and systems.
• Administer Microsoft 365 including Exchange Online, Teams and SharePoint.
• Manage Entra ID/AD, identities, access controls.
• Support Windows server and endpoints.
• Maintain system documentation and records.
• Lead ICT projects and drive continuous improvement.

Skills

Microsoft Entra ID/AD

Networking basics

Windows Server

Troubleshooting

Cybersecurity awareness

Tools

Microsoft 365

Intune

ISO 27001

Job description

Crowleys DFK is seeking a Senior Systems Administrator for our Dublin office. The role is hybrid (2 days in-office), full-time, 37.5 hours per week, focusing on managing infrastructure, cybersecurity, and Microsoft 365 environments.

You will work on governance, compliance, and cloud migrations, collaborating with a professional services team in a regulated environment. Relevant certifications and strong problem-solving skills are encouraged.