Senior System Administrator

  • Global Business
  • Hybrid - 2 days in office 15 mins south of Cork City
  • Long term 12 month rolling contract - €400 - €450 per day

We are seeking a highly skilled and experienced Senior System Administrator with exceptional expertise in Active Directory (AD) to join a dynamic IT team. The ideal candidate will be responsible for managing, maintaining, and optimizing an Active Directory environment, ensuring its stability, security, and efficiency. This role requires a deep understanding of AD architecture, GPOs, DNS, DHCP, and related technologies.

Key Responsibilities:

  • Active Directory Management:

    • Design, implement, and manage a robust Active Directory infrastructure.
    • Maintain AD forests, domains, organizational units (OUs), and Group Policy Objects (GPOs).
    • Ensure AD replication health and troubleshoot replication issues.
  • Security and Compliance:

    • Implement and enforce AD security best practices.
    • Perform regular audits of AD permissions and security settings.
    • Ensure compliance with company policies and industry standards.
  • System Maintenance and Optimization:

    • Monitor system performance and optimize AD operations.
    • Plan and execute AD schema changes, upgrades, and migrations.
    • Develop and maintain PowerShell scripts for automation and reporting.
  • Troubleshooting and Support:

    • Provide advanced support for AD-related issues.
    • Resolve escalated service desk tickets related to AD.
    • Collaborate with other IT teams to address and resolve complex issues.
  • Backup and Disaster Recovery:

    • Implement and manage AD backup and recovery processes.
    • Develop and test disaster recovery plans for AD.
  • Documentation and Training:

    • Create and maintain comprehensive AD documentation.
    • Provide training and guidance to junior administrators and IT staff.


  • Education and Experience:

    • Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent experience.
    • Minimum of 5-7 years of experience in system administration with a focus on Active Directory.
  • Technical Skills:

    • Expert-level knowledge of Active Directory, including design, implementation, and troubleshooting.
    • Proficiency in Group Policy management and configuration.
    • Strong understanding of DNS, DHCP, and network protocols related to AD.
    • Experience with AD migrations, upgrades, and integrations.
    • Solid scripting skills, particularly in PowerShell.
    • Familiarity with Windows Server environments and related technologies.

From here on out a great opportunity awaits for a contractor whom is keen to get stuck into a large piece of work that will keep you busy and engaged for the foreseeable future. 

Please CLICK APPLY to be immediately considered!


Chris  Pelow's our  Managing Director

Managing Director

Chris Pelow

Managing Director

[email protected]
+353 87 624 3035