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

TechBiz Global GmbH; Lisboa; Presencial; EUR 45 000 - 65 000; Tempo integral

Resumo da oferta

TechBiz Global GmbH in Lisboa, PT, is seeking a dedicated Technical Support Engineer / Linux Systems Administrator for an on-site role. You will join a client-facing team, manage GNU/Linux systems, and support hosting stacks with cPanel/WHM, Plesk, and automation tools.

Responsibilities cover web hosting operations, application support, network security, mail server admin, and DevOps tasks using Apache/Nginx/LiteSpeed, MySQL/MariaDB, and Redis. English fluency is advantageous.

Qualificações

• Several years of hands-on experience in web hosting support and system administration.
• Advanced proficiency in Linux system administration and troubleshooting.
• Cross-platform support including Windows Server (IIS, MSSQL).
• Deep understanding of cPanel/WHM, CloudLinux, PHP configurations, and shared hosting constraints.

Responsabilidades

• Administer and maintain GNU/Linux systems and virtualized/containerized environments.
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Conhecimentos

Linux system administration

Windows Server (IIS, MSSQL)

Networking fundamentals

Communication

Scripting (Bash, Python)

Ansible

WHMCS

CloudLinux

Ferramentas

cPanel/WHM

Plesk

Docker

OpenVZ

KVM

Apache

Nginx

LiteSpeed

MySQL/MariaDB

Redis

Dovecot

Exim

SPF/DKIM/DMARC

ModSecurity/Imunify360

WHMCS integration

Ansible

Descrição da oferta de emprego

TechBiz Global GmbH in Lisboa, P11, 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.