Linux System Administrator

Key Responsibilities

• Administer, configure, and maintain Linux and Windows servers (Windows Server 2008/2012, Windows 8/10 client OS, macOS).

• Manage and troubleshoot network services including DNS, DHCP, WINS, TCP/IP, routing protocols (RIP v1/v2, IGRP, EIGRP, OSPF), LAN/WiFi access, firewalls, and network security.

• Configure, deploy, and maintain web servers and application servers such as Apache, Nginx, IIS, and Apache Tomcat.

• Manage web hosting environments and CMS platforms, including deployments, upgrades, troubleshooting, and security patching.

• Perform database administration for MySQL and Microsoft SQL Server, including backups, monitoring, and basic performance tuning.

• Configure, troubleshoot, and manage email servers and mail relays.

• Implement DevOps practices by working closely with development teams to support automated builds, deployments, and release pipelines.

• Install, configure, and manage CI/CD tools (e.g., Jenkins or similar) and ensure smooth integration with source code repositories.

• Manage version control systems such as Git and Subversion and support branching and release workflows.

• Automate routine system administration tasks using shell scripting or other automation tools.

• Manage cloud infrastructure and virtualized environments, including server provisioning, monitoring, and clustering.

• Administer AWS environments, focusing on server provisioning, security hardening, access control, and Just-In-Time (JIT) access.

• Ensure server and application security, including OS hardening, firewall configuration (iptables), deny hosts, web server hardening, CMS security updates, and vulnerability patching.

• Troubleshoot and resolve hardware, OS, network, and application-level issues and provide technical support to internal teams.

• Secure organizational data and manage access across the office network.

• Track and maintain an inventory of IT assets.

• Perform system upgrades and process improvements to enhance performance, reliability, and security.

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• Required Skills & Qualifications

• 4+ years of experience in Linux System Administration.

• Strong hands-on experience with Linux servers and system troubleshooting.

• Experience in configuring web and application servers: Apache, Nginx, IIS, Apache Tomcat.

• Solid understanding of networking fundamentals, LAN/WAN design, routing, firewall, and proxy configurations.

• Working knowledge of database administration (MySQL, SQL Server).

• Exposure to DevOps tools and practices, including CI/CD, automation, and infrastructure support for deployments.

• Experience with cloud platforms, preferably AWS.

• Knowledge of server security and hardening best practices.

• Hands-on experience with version control systems such as Git and Subversion.

• Ability to manage and troubleshoot production systems with minimal downtime.