Linux Server Administrator

Key Responsibilities

• Install, configure, and maintain Linux servers, including Ubuntu, Debian, CentOS, and Rocky Linux.
• Perform operating system installation, server provisioning, configuration, and system hardening.
• Configure SSH access, key-based authentication, and securely manage remote servers using Termius or similar SSH clients.
• Install and configure web servers such as Nginx and Apache, databases including MySQL and MariaDB, and other required software packages.
• Manage IPv4 and IPv6 networking, DNS, routing, and firewall configurations.
• Configure and troubleshoot HTTP, HTTPS, SOCKS5, and reverse proxy services.
• Monitor server health, CPU, memory, storage, and network performance.
• Write and maintain Python and Bash scripts to automate server administration, log processing, monitoring, and repetitive tasks.

Required Skills & Expertise

• Strong knowledge of Linux operating systems, including Ubuntu, Debian, CentOS, and Rocky Linux.
• Experience installing, configuring, and maintaining Linux servers and web servers such as Nginx and Apache.
• Good understanding of SSH, Termius, PuTTY, and remote server administration.
• Experience with Python and Bash scripting for server automation and administrative tasks.
• Strong understanding of TCP/IP, DNS, HTTP/HTTPS, SMTP, FTP, and general networking concepts.
• Experience configuring HTTP and SOCKS proxies, reverse proxies, and firewalls including UFW, iptables, and nftables.
• Familiarity with Git, version control, cloud servers, virtualization, and infrastructure management.
• Familiarity with cloud platforms and hosting providers such as AWS, Azure, DigitalOcean, Vultr, and Hetzner.
• Knowledge of email server administration, PowerMTA, and DNS authentication records including SPF, DKIM, and DMARC is an advantage.
• Understanding of VPNs, proxy infrastructure, and basic cybersecurity best practices.