Technical Support Engineer / Linux Systems Administrator (L2/L3) at TechBiz Global GmbH

TechBiz Global GmbH; Muratpaşa; Hybrid; TRY 200,000 - 320,000; Full time

Job summary

TechBiz Global GmbH in Antalya, Türkiye, seeks a Technical Support Engineer / Linux Systems Administrator (L2/L3) for an on-site role. You will maintain GNU/Linux systems, manage hosting stacks, and support web apps and databases across shared hosting environments.

Responsibilities include deploying control panels, optimizing performance, securing networks, and handling mail servers. Strong Linux expertise and experience with cPanel/WHM and CloudLinux are essential.

Qualifications

• Several years of hands-on hosting industry experience in technical support and system administration.
• Advanced proficiency in Linux system administration and troubleshooting.
• Familiarity with Windows Server environments including IIS and MSSQL for cross-platform support.
• Deep understanding of the cPanel/WHM ecosystem, CloudLinux (LVE, CageFS, Selectors), PHP configuration, and hosting constraints.
• Strong grasp of web server mechanics, relational/NoSQL databases, and debugging complex web apps at the server level.
• Solid understanding of TCP/IP, DNS, and network protocols.
• Excellent communication to manage escalated tickets and deliver custom solutions.
• Nice-to-have: Bash scripting, Python utilities, Ansible, and WHMCS integrations.

Responsibilities

• Administer and maintain GNU/Linux operating systems and virtualized environments (OpenVZ, KVM, Docker).
• Deploy, manage, and troubleshoot hosting control panels (cPanel/WHM, Plesk) in shared hosting.
• Support PHP-based web apps (WordPress, Laravel; Node.js, Python stacks a plus).
• Configure and maintain network/firewall/WAF security; respond to incidents.
• Troubleshoot mail flow; manage mail servers (Exim, Dovecot, SPF, DKIM, DMARC).
• Monitor services and perform performance tuning for Apache, Nginx, LiteSpeed, MySQL/MariaDB.
• Assist in migrations, backups, disaster recovery, and caching/CDN strategies.

Skills

Linux admin

Open source Linux

Web hosting

cPanel/WHM

Plesk

CloudLinux

PHP WordPress

Laravel

Node.js

Python

MySQL/MariaDB

Nginx

Apache

LiteSpeed

Docker

Firewall/WAF

Mail servers

Exim/Dovecot

DMARC/SPF

Bash scripting

Ansible

WHMCS

Networking basics

English communication

Tools

OpenVZ/KVM

cPanel/WHM tooling

Plesk

CloudLinux

WHMCS

Docker

Nginx

Apache

LiteSpeed

Job description

Apply for Technical Support Engineer / Linux Systems Administrator (L2/L3) at TechBiz Global GmbH in Antalya, T07, TR. This Full time on site position offers great opportunities for career growth.

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.

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.