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

TechBiz Global GmbH; Porto; Presencial; EUR 36 000 - 54 000; Tempo integral

Resumo da oferta

TechBiz Global GmbH in Porto, PT, seeks a Technical Support Engineer / Linux Systems Administrator (L2/L3) for an on-site, full-time role. You will work with GNU/Linux systems, virtualization, and hosting control panels to support and optimize client environments.

The role requires strong Linux admin skills, experience with cPanel/WHM, Plesk, and web stack technologies, with familiarity in PHP, Node.js, and Python. Networking, security, and automation experience are highly valued.

Qualificações

• Several years of hands-on experience in web hosting technical support and system administration.
• Advanced proficiency in Linux system administration and troubleshooting.
• Familiarity with Windows Server environments (IIS, MSSQL) for cross-platform support cases.
• Deep understanding of cPanel/WHM, CloudLinux, PHP configuration, and typical hosting constraints.
• Strong knowledge of web server mechanics (Apache, Nginx, LiteSpeed) and related databases.
• Networking fundamentals including TCP/IP and DNS.
• Experience with Bash scripting and Python utilities is a plus.
• Experience with WHMCS backend and integrations is beneficial.

Responsabilidades

• Administer and maintain GNU/Linux systems and virtualization/container environments (OpenVZ, KVM, Docker).
• Participate in deployment, management, and troubleshooting of hosting control panels (cPanel/WHM, Plesk).
• Troubleshoot and optimize web applications built on PHP, with Node.js and Python considered a plus.
• Configure and maintain network protocols, firewalls, and WAFs (ModSecurity, Imunify360).
• Manage mail servers including Exim and Dovecot; handle SPF, DKIM, DMARC and relays.
• Conduct performance tuning for Apache, Nginx, LiteSpeed, and databases (MySQL/MariaDB).
• Support migrations of hosting accounts, VMs, and mail; assist in DR, backups, and caching/CDN strategies.

Conhecimentos

Linux

OpenVZ

KVM

Docker

Web servers

cPanel/WHM

Plesk

PHP

Node.js

Python

Bash

Ansible

WHMCS

Windows Server

MySQL/MariaDB

Ferramentas

OpenVZ

KVM

Plesk

Descrição da oferta de emprego

Apply for Technical Support Engineer / Linux Systems Administrator (L2/L3) at TechBiz Global GmbH in Porto, P13, PT. This Full time on site position offers great opportunities for career growth. 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.

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.