Technical Support Engineer / Linux Systems Administrator (L2/L3)

TechBiz Global; Georgia; On-site; USD 70,000 - 100,000; Full time

Job summary

TechBiz Global is seeking a dedicated Technical Support Engineer / Linux Systems Administrator to join one of our clients’ teams. You will manage GNU/Linux systems, hosting panels, and web app stacks to ensure reliability and security.

You will collaborate with a technical team to deploy, troubleshoot, and optimize hosting environments, including mail systems and performance tuning across multiple web servers and databases.

Qualifications

• Years of hands-on web hosting and system administration experience.
• Strong Linux troubleshooting and cross-platform support skills.
• Familiarity with cPanel/WHM, Plesk, and hosting stacks.
• Knowledge of web technologies and databases; PHP/Node.js/Python a plus.
• Solid networking fundamentals and security incident response.

Responsibilities

• Administer and maintain GNU/Linux systems and virtualized/containerized environments.
• Deploy, manage, and troubleshoot hosting control panels in shared environments.
• Troubleshoot web applications and server stacks (WordPress, Laravel, etc.).
• Configure networks, firewalls, and WAFs; respond to security incidents.
• Troubleshoot mail flow with Exim/Dovecot, SPF/DKIM/DMARC.
• Monitor services and perform performance tuning across Apache/Nginx/LiteSpeed and databases.
• Assist in migrations, disaster recovery testing, backups, and caching/CDN strategies.

Skills

Linux system administration

Web hosting support

Troubleshooting

Networking fundamentals

Cross-team collaboration

Tools

OpenVZ

KVM

Docker

cPanel/WHM

Plesk

Exim

Dovecot

SPF

DKIM

DMARC

Apache

Nginx

LiteSpeed

MySQL/MariaDB

Redis

WHMCS

Job description

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio.

We are currently looking for a dedicated Technical Support Engineer / Linux Systems Administrator to join one of our clients' teams. If you're looking for an exciting opportunity to grow in an innovative environment, this could be the perfect fit for you.

Key Responsibilities

• Infrastructure Collaboration: Work within the technical team to administer and maintain GNU/Linux operating systems and virtualized/containerized environments (OpenVZ, KVM, Docker, etc).
• Web Hosting Operations: Participate in the deployment, management, and troubleshooting of industry-standard control panels (like cPanel/WHM, Plesk) within shared hosting environments.
• Application & Web Stack Support: Troubleshoot and optimize web applications built on common web technologies, frameworks and CMS platforms (WordPress, Laravel, etc.). Assist clients and resolve complex issues related to PHP, with knowledge of Node.js and Python stacks considered a strong plus.
• Network & Security Operations: Help configure and maintain network protocols, firewalls, and WAFs (ModSecurity, Imunify360). Work with the team to identify, respond to, and mitigate security incidents (malware, phishing, DoS, etc.).
• Mail Server Administration: Troubleshoot mail flow and deliverability issues, you are already familiar with Exim, Dovecot, SPF, DKIM, DMARC, and the use of external mail relays.
• Performance & DevOps: Contribute to routine service monitoring and execute performance tuning across Apache, Nginx, LiteSpeed, and database engines (mainly MySQL/MariaDB, and rarely PostgreSQL and Redis).
• Reliability & Migrations: Support infrastructure projects, including migration of hosting accounts, VMs, and mail systems. Assist in testing and implementing disaster recovery, backups, failovers, and caching/CDN strategies.

Job requirements

Required Qualifications

• Experience: Several years of hands-on experience in the web hosting industry in both technical support and system administration.
• OS Mastery: Advanced proficiency in Linux system administration and troubleshooting. Familiarity with Windows Server environments (including IIS, MSSQL) for cross-platform support cases.
• Hosting Stacks: Deep understanding of the cPanel/WHM ecosystem, CloudLinux (LVE, CageFS, Selectors), PHP configuration, and typical shared hosting constraints and workarounds. In addition to proven expertise configuring, managing, and troubleshooting HTTP web servers (Apache, Nginx, LiteSpeed, etc.).
• Web Technologies: Strong grasp of web server mechanics, relational/NoSQL databases, and the ability to debug complex web apps at the server level.
• Networking Fundamentals: Solid understanding of TCP/IP, DNS, and network protocols.
• Communication: Strong ability to manage escalated support tickets and collaborate with peers to provide custom technical solutions for clients.

Nice-to-Have

• Automation & Scripting: Proficiency in writing Bash scripts, Python utilities, and utilizing Ansible playbooks to help the team automate routine deployments and maintenance tasks.
• Billing & Integration: Experience with WHMCS backend architecture and custom module integrations.
• Hardware & Architecture: Familiarity with high-density enterprise server architectures and large-scale account consolidation workflows.
• Multilingual Support: Professional fluency in English is highly advantageous for internal documentation and diverse client communication.