Senior Linux System Administrator Location: Hybrid (50/50) | Employment Type: Full-TimeMCS Group is seeking a Senior Linux System Administrator to join an infrastructure team supporting both on-premise and cloud environments. This role is ideal for a technically strong professional who can maintain, secure, and enhance Linux systems while driving improvements through automation and best practices.Key Responsibilities:Administer and optimise Debian-based Linux servers in production.Develop automation scripts (Bash, Python) to streamline tasks.Manage networking components (DNS, routing, firewalls, VPNs).Support database technologies including PostgreSQL, MySQL/MariaDB, and AWS RDS.Monitor system performance and respond to incidents.Implement security best practices and infrastructure hardening.Participate in on-call rotations and maintain technical documentation.Collaborate across teams to ensure resilient and efficient systems.Candidate Profile:Strong experience supporting Linux (Debian preferred) in production.Proficient in scripting (Bash, Python) and automation.Solid networking knowledge (TCP/IP, DNS, routing, firewalls).Experience managing databases and cloud-hosted services.Analytical problem-solving skills with excellent communication.Desirable Experience:AWS cloud environments (VPC, EC2, Route 53).Monitoring/observability tools (Prometheus).VoIP/SIP technologies.Infrastructure as Code, CI/CD, or configuration management.Supporting high-availability or large-scale infrastructures.Package & Benefits:Competitive salary8% combined pensionProfessional development supportFlexible hybrid workingAccess to modern infrastructure & cloud technologiesEmployee discounts on tech and equipment To speak in absolute confidence about this opportunity please send an up-to-date CV via the link provided or contact Senior Recruitment Consultant Stuart Kennedy at MCS Group on 02896935520 or s.kennedy@mcsgroup.jobs. Even if this position is not right for you, we may have others that are. Please visit MCS Group to view a wide selection of our current jobs.