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

TechBiz Global GmbH; Turkey; On-site; TRY 600,000 - 900,000; Full time

Job summary

TechBiz Global GmbH in TR seeks a Technical Support Engineer / Linux Systems Administrator (L2/L3) for on-site work. You will maintain GNU/Linux systems, administer hosting stacks, and support WordPress/Laravel apps, with focus on PHP, Node.js, and Python backends.

Responsibilities include network security, mail server tuning, and performance optimization across Apache, Nginx, and MariaDB. English skills are advantageous for client communication.

Qualifications

• Several years of hands-on web hosting support and system administration experience.
• Advanced Linux administration and troubleshooting skills.
• Cross-platform knowledge including Windows Server (IIS, MSSQL).
• Deep understanding of cPanel/WHM, CloudLinux, PHP configurations, and hosting constraints.
• Strong web tech knowledge and ability to debug apps at server level.
• Solid networking basics and scripting capabilities (Bash, Python).
• Experience with WHMCS backend architecture and module integrations.
• Familiarity with high-density server architectures and migrations.

Responsibilities

• Administer and maintain GNU/Linux systems and virtualization environments (OpenVZ, KVM, Docker).
• Deploy, manage, and troubleshoot hosting control panels (cPanel/WHM, Plesk) in shared hosting.
• Troubleshoot PHP-based web apps; work with WordPress, Laravel, Node.js and Python stacks.
• Configure networks, firewalls, and WAFs; respond to security incidents.
• Troubleshoot mail flow; knowledge of Exim, Dovecot, SPF/DKIM/DMARC preferred.
• Monitor service health and perform performance tuning for Apache, Nginx, LiteSpeed, MySQL/MariaDB.
• Assist in migrations, backups, disaster recovery, and caching/CDN strategies.

Skills

Linux administration

OpenVZ

KVM

Docker

Web hosting

WordPress

Laravel

PHP

Node.js

Python

Ansible

WHMCS

cPanel/WHM

Nginx

Apache

DNS/TCP/IP

Tools

cPanel/WHM

Plesk

WHMCS

Apache

Nginx

LiteSpeed

OpenVZ

KVM

Docker

Job description

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

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.