Senior Systems Administrator
This is a permanent role with 2 days onsite at our West Dublin office.
Key Responsibilities
* Systems Administration: Oversee and support on-premises and cloud-based systems, including installation, configuration, and maintenance of hardware and software, such as servers, storage, and networking components.
* Monitoring & Performance Tuning: Continuously monitor system health, performance, and capacity, diagnose and troubleshoot issues to ensure optimal performance and availability, and perform proactive patching and upgrades to minimize disruptions.
* Security Management: Implement and maintain security policies and procedures to safeguard systems and data, address vulnerabilities, and ensure systems comply with best practices and regulations.
* Backup & Disaster Recovery: Manage backup strategies and disaster recovery plans, regularly test and refine recovery procedures to ensure data integrity and reliability.
* Automation & Scripting: Develop scripts and automate administrative tasks using Power Shell or equivalent tools.
* Collaboration & Support: Provide support for escalated issues from internal teams and external support providers, collaborate with developers, network administrators, and IT teams to optimize infrastructure, and document system configurations, processes, and procedures for stakeholders.
Requirements
* 5+ years of experience in a Senior Systems Administrator or equivalent role.
* Expertise in Windows systems administration.
* Strong knowledge of cloud platforms (AWS, Azure, GCP) and virtualisation technologies (VMware, Hyper-V).
* Hands-on experience with networking (TCP/IP, DNS, DHCP, VLANs, etc.).
* Proficiency in scripting and automation using Power Shell.
* Experience with disaster recovery planning and execution.
* Knowledge of cybersecurity best practices (firewalls, VPNs, IDS/IPS).
* Ability to thrive in a hybrid work environment with excellent time management skills.
* Strong problem-solving abilities to troubleshoot complex system issues.
* Willingness to participate in an on-call rota.
PREFERRED SKILLS AND CERTIFICATIONS
* Experience with containerisation technologies such as Docker and Kubernetes.
* Familiarity with monitoring tools like SCOM, Nagios, Zabbix, Prometheus, or Azure Monitor.
* MICROSOFT SERVER AND AZURE CERTIFICATIONS ARE ADVANTAGEOUS