Due to continued growth, we are currently hiring an Infrastructure/Systems Engineer with strong Linux troubleshooting and problem-solving experience. Our consultancy specializes in providing business and technology services to clients in all sectors.We are looking for someone with strong Linux troubleshooting skills and a solid understanding of networking and firewalls. This role is ideal for someone who thrives in a fast-paced environment and enjoys working at the intersection of infrastructure, automation, and security.A snapshot of your key responsibilities: Maintain and support Linux-based systems (RedHat EL Derivatives, Debian Derivatives). Troubleshoot system-level issues, including performance, networking, and configuration problems. Manage and configure firewalls and security rules. Support on-premise server infrastructure, including virtualisation platforms. Collaborate with other IT team members to maintain stable and secure environments. Monitor system performance, respond to incidents, and provide root cause analysis. Implement and monitor security best practices, conduct vulnerability assessments, and assist in security incident response. Assist with patching, upgrades, and system health checks. Requirements: Strong hands-on experience with Linux (RHEL, Ubuntu, CentOS). Proven ability to troubleshoot operating system and hardware issues. Working knowledge of firewalls and networking (e.g. Host-based, Proprietary & Open Source Appliances). Solid understanding of core networking protocols (TCP/IP, DNS, DHCP, routing). Demonstrated experience in cybersecurity: patching, auditing, threat mitigation, and compliance. Excellent troubleshooting skills and ability to work independently or within a team. Disaster Recovery experience – Configuration, Storage, Hosts. Other Details:Opportunity type: Contract (Initial 6 months), Hybrid in Dublin.