L2/L3 Linux Technical Support Engineer – Web Hosting at TechBiz Global GmbH

TechBiz Global GmbH; Fatih; On-site; TRY 90,000 - 150,000; Full time

Job summary

TechBiz Global GmbH in İstanbul, Turkey is seeking a L2/L3 Linux Technical Support Engineer for on-site web hosting operations. You will administer GNU/Linux systems, manage virtualization, and support web hosting stacks including cPanel/WHM and Plesk.

Strong scripting and security skills are important. The role requires hands-on hosting experience, knowledge of web technologies, and the ability to troubleshoot complex PHP/Node.js/Python applications.

Qualifications

• Extensive experience with GNU/Linux administration and web hosting tooling.
• Strong knowledge of cPanel/WHM, CloudLinux, PHP, and web stacks.
• Familiarity with Docker, OpenVZ, KVM virtualization and related environments.
• Proficient in troubleshooting web apps (WordPress, Laravel) and databases (MySQL/MariaDB).
• Networking fundamentals including DNS/TCP/IP; security incident response.
• Scripting in Bash and Python; Ansible playbooks for automation.
• Experience with mail servers (Exim, Dovecot) and mail deliverability (SPF/DKIM/DMARC).

Responsibilities

• Administer and maintain GNU/Linux systems and virtualization environments.
• Deploy and manage control panels (cPanel/WHM, Plesk) in hosting environments.
• Troubleshoot PHP, Node.js, Python web apps and optimize performance.
• Configure networks, firewalls, and WAFs; respond to security incidents.
• Troubleshoot mail flow with Exim/Dovecot and DNS records.
• Tune performance for Apache/Nginx/LiteSpeed and databases.
• Support migrations, backups, DR strategies and monitoring.

Job description

L2/L3 Linux Technical Support Engineer – Web Hosting at TechBiz Global GmbH in İstanbul, T34, 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.