Linux System Administrator

Tel.: +351 214 171 161 - Lisboa

Tel.: +351 253 120 734 - Braga

Fax: +351 214 177 610

(Chamada para a rede fixa nacional) (Call to the national fixed network)

About Us: DataSmart is a Portuguese company, positioning itself as a consulting company of excellence, with over 20 years of existence. We are specialized in Technologies and Information Systems services, for the Portuguese and International markets. We pride ourselves on fostering a culture of involvement, experience, and excellence.

Join our team as a Linux System Administrator (Hybrid – Porto, Lisbon)!

What You’ll Do:

- Install, configure, maintain, and troubleshoot Linux servers (physical and virtual).

- Monitor system performance, availability, and capacity to ensure optimal operation.

- Manage user accounts, permissions, groups, and security policies.

- Perform system upgrades, patch management, and operating system maintenance.

- Configure and maintain networking services, including DNS, DHCP, SSH, NFS, and VPNs.

- Automate system administration tasks using scripting languages such as Bash or Python.

- Manage storage solutions, file systems, backups, and disaster recovery processes.

- Configure and maintain web servers, application servers, and database servers where required.

- Troubleshoot hardware, software, networking, and operating system issues.

- Implement and maintain monitoring and logging solutions (e.g., Nagios, Zabbix, Prometheus, Grafana, ELK).

- Support virtualization and cloud environments (VMware, KVM, Hyper-V, AWS, Azure, or Google Cloud).

- Manage configuration management and infrastructure automation tools (e.g., Ansible, Puppet, Chef, Terraform).

- Ensure system security by implementing hardening, vulnerability remediation, and access controls.

- Collaborate with DevOps, development, networking, and security teams to support infrastructure projects.

- Create and maintain technical documentation, procedures, and system architecture diagrams.

- Participate in incident response, root cause analysis, and on‑call support when required.

Qualifications:

- 3+ years (Mid) or 5+ years (Senior) of Linux system administration experience.

- Strong experience administering Linux distributions such as Red Hat Enterprise Linux (RHEL), Ubuntu, CentOS, Rocky Linux, or Debian.

- Solid understanding of Linux system architecture, kernel, processes, services, and package management.

- Experience with Bash scripting; Python is an advantage.

- Strong knowledge of networking concepts, including TCP/IP, DNS, DHCP, routing, firewalls, and VPNs.

- Experience with virtualization technologies such as VMware, KVM, or Hyper-V.

- Familiarity with cloud platforms such as AWS, Microsoft Azure, or Google Cloud Platform.

- Experience with configuration management and automation tools (Ansible, Puppet, Chef, Terraform).

- Knowledge of Docker and Kubernetes is a plus.

- Experience with monitoring, logging, and alerting tools (Prometheus, Grafana, Zabbix, Nagios, ELK, Splunk).

- Familiarity with CI/CD pipelines and DevOps practices.

- Understanding of security best practices, system hardening, identity management, and vulnerability management.

- Experience with backup, recovery, and high‑availability solutions.

- Strong troubleshooting and problem‑solving skills.

- Excellent communication and documentation skills.

- Ability to work independently and collaboratively within cross‑functional teams.

- Bachelor’s degree in Computer Science, Information Technology, or a related field (preferred).

- Linux certifications such as RHCSA, RHCE, LPIC, or CompTIA Linux+ are considered an advantage.

- Professional English proficiency (minimum B2).

- Based in Portugal and available to work in a hybrid model

At DataSmart, you will have the opportunity to integrate into a solid company and participate in projects of high recognition, nationally and internationally, with an appealing technological environment and career progression.

Excellence in the way to the future!

Connect with Us: Follow us on LinkedIn for updates on career opportunities, company news, and industry insights! For further details, visit us at www.datasmart.pt

#JoinOurTeam #DataSmart #ThinkDataBeSmart #Linux

Do you accept the challenge?

We are waiting for you!

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