Linux Infrastructure Architect

Linux Infrastructure ExpertWe are seeking a skilled and experienced Linux Technical Lead to oversee the end-to-end infrastructure covering web hosting platforms, server administration, virtualization environments, data center operations, and cloud technologies.This role requires deep technical expertise in Linux systems, hosting control panels, networking, virtualization (KVM/Proxmox/VMware), cloud services, and infrastructure automation.Key Responsibilities:Lead architecture design, implementation, and optimization of hosting and DC server infrastructure.Define technical roadmaps, best practices, and modernization plans.Evaluate new tools, hosting technologies, virtualization stacks, and cloud solutions.Drive continuous improvement in performance, security, and scalability.Manage end-to-end Linux server operations (CentOS, Ubuntu, Debian, RHEL, AlmaLinux, Fedora).Oversee provisioning, configuration, upgrades, system hardening, and automation.Administer hosting control panels: cPanel/WHM, Plesk, DirectAdmin, custom panels.Maintain and optimize core hosting services:Apache/NginxMySQL/MariaDBPHP/PHP-FPMDNS, Email serversFTP, SSL, FirewallManage virtualization environments (KVM, Proxmox, VMware) and containerization (LXC, Docker).Oversee physical and virtual DC infrastructure health and uptime.Coordinate with onsite technicians for hardware replacements, cabling, and diagnostics.Perform hardware troubleshooting (RAID, disks, NICs, memory, power issues).Work with remote management tools such as iLO, iDRAC, IPMI.Maintain DC documentation, DR plans, and escalation procedures.Configure and troubleshoot networking fundamentals:TCP/IP, DHCP, DNS, NAT, VLANs, VPNsRouting, subnetting, load balancingFirewalls (iptables, nftables, firewalld, ufw)Manage CDN integrations and DNS-level configurations for performance optimization.Perform deep-dive network diagnostics (tcpdump, netstat, ss, traceroute, nmap).Lead cloud deployments and migrations (AWS, Azure, GCP, or private cloud).Build & maintain automation via Ansible, Terraform, Bash/Python scripting.Develop CI/CD pipelines for infrastructure updates and deployments.Implement configuration management and version-controlled workflows (Git).Implement and enforce advanced server security best practices.Manage firewalls, intrusion detection, vulnerability scans, patch cycles.Conduct audits, logs review, and incident response procedures.Maintain compliance with standards like ISO, GDPR, PCI-DSS.Use monitoring tools: Zabbix, Nagios, Prometheus, Grafana to track uptime, performance, and alerts.Diagnose complex OS, network, application, and hosting issues.Perform OS-level troubleshooting (systemd issues, boot problems, log analysis).Manage resource optimizations—CPU, RAM, disk I/O, caching layers.Lead disaster recovery, failover, and business continuity planning.Provide training on Linux, hosting platforms, virtualization, and security.Serve as the highest-level technical escalation point for critical issues.Candidates must possess strong leadership skills, excellent analytical and communication abilities, and a deep understanding of Linux systems and hosting environments.Requirements:10+ years of experience in Linux server administration and hosting/DC infrastructure.Expert-level knowledge of CentOS, Ubuntu, RHEL, Debian, AlmaLinux, and other distributions.Strong expertise with hosting panels: cPanel, Plesk, DirectAdmin.Hands-on experience with virtualization tools (Proxmox, VMware, KVM, LXC).Strong networking fundamentals (TCP/IP, routing, DNS, firewalling).Experience managing cloud platforms and automation tools (Ansible, Terraform).Deep understanding of security principles and server hardening.Proven leadership experience managing technical teams.