Senior Linux Systems Administrator for High-Impact Infra

Fyld; Lisboa; On-site; EUR 42,000 - 64,000; Full time

Job summary

Fyld is hiring: Linux Systems Administrator. Fyld is a Portuguese consulting company focused on growth, transparency, and delivering secure technology solutions. We seek an experienced Linux Systems Administrator to manage Linux environments with hands-on expertise and strong infra skills.

You will join a collaborative team that values innovation, growth, and high-quality infrastructure. The role emphasizes enabling reliable systems, security hardening, and proactive problem-solving in an Agile

Qualifications

• Degree in Computer Science, Computer Engineering, Information Technology, or a related field.
• Minimum of 4 years of professional experience as a Linux Systems Administrator or in a similar role.
• Strong experience in the administration, configuration and maintenance of Linux systems.
• Hands-on experience with Red Hat, Ubuntu, Debian or similar Linux distributions.
• Strong knowledge of Linux command line and Bash scripting.
• Experience with system monitoring, troubleshooting and performance optimisation.
• Good knowledge of networking fundamentals, including TCP/IP, DNS, DHCP, and SSH.
• Experience administering web servers, such as Apache or Nginx.
• Good understanding of storage, filesystems, permissions, users and access management.
• Experience implementing Linux security and hardening practices, including SELinux, AppArmor and firewall configuration.
• Experience with backup, recovery and system maintenance procedures, and knowledge of logging/monitoring tools.
• Experience with automation and configuration management, preferably using Ansible.
• Ability to troubleshoot and resolve infrastructure and production incidents.
• Good understanding of high availability and system reliability concepts.
• Ability to document technical procedures and follow infrastructure best practices.
• Strong analytical and problem-solving skills.
• Ability to work effectively in collaborative and Agile environments.
• Fluency in Portuguese and English.

Skills

Linux Administration

4+ years experience

Linux command line

Bash scripting

System Monitoring

Troubleshooting

Networking TCP/IP DNS DHCP SSH

Web Servers (Apache / Nginx)

Storage & Permissions

Linux Security & Hardening

Backup & Recovery

Logging & Observability

Automation with Ansible

Incident Resolution

High Availability

Documentation & SOPs

Analytical & Problem-Solving

Agile Collaboration

Portuguese & English Fluency

Education

Degree in Computer Science, Computer Engineering, Information Technology, or a related field

Tools

Docker

VMware / KVM / Hyper-V

AWS / Azure / GCP

PostgreSQL / MySQL / MariaDB administration

CI/CD concepts

Python scripting

Enterprise monitoring tools

Observability tools

Job description

Fyld is hiring: Linux Systems Administrator. Fyld is a Portuguese consulting company focused on growth, transparency, and delivering secure technology solutions. We seek an experienced Linux Systems Administrator to manage Linux environments with hands-on expertise and strong infra skills.

You will join a collaborative team that values innovation, growth, and high-quality infrastructure. The role emphasizes enabling reliable systems, security hardening, and proactive problem-solving in an Agile