Linux Systems Administrator (Mid to Senior)

About the Job

You will deliver high-quality IT solutions for enterprise customers, covering architecture input, implementation, and day-to-day operations. Your focus is Linux/Unix administration with emphasis on Red Hat and Oracle Linux, automation with Ansible and Terraform, containerization with Docker, and Kubernetes administration. You will collaborate with customers and internal teams, document standards and changes, troubleshoot incidents, and drive improvements that increase stability, security, and performance.

Main Requirements

• Degree in Computer Science, Engineering, or a related field.
• At least 3 years of experience administering Linux/Unix systems, with emphasis on Red Hat Enterprise Linux and Oracle Linux.
• Depth in Infrastructure as Code using Ansible; familiarity with Terraform for provisioning.
• Knowledge of networking and web protocols (for example HTTP/HTTPS,TLS, DNS, routing/firewalls).
• Knowledge of Docker containers and Kubernetes administration.
  
• Comfortable with scripting and automation (for example Bash or Python) and with Git-based workflows.
• Comfortable documenting runbooks, change records, and architecture notes, and communicating clearly with stakeholders.
• Nice to have: Red Hat certifications; experience with public clouds, for example AWS, Azure, or GCP.
  

Personality Traits

• Hands-on attitude;
• Proactive;
• Detail oriented;
• Proactive;
• Team player;

What Can You Expect

Hybrid model in the Lisbon area, with two days per week on-site.
Opportunity to work across architecture, implementation, and operations for enterprise environments.
Training and growth with modern automation practices (Ansible, Terraform) and container platforms (Docker, Kubernetes).

Tech Stack

Linux; Red Hat Enterprise Linux; Oracle Linux; Ansible; Terraform; Kubernetes; Docker; Networking; HTTP/HTTPS; TLS; DNS; AWS; Azure; GCP; Bash; Python; Git; CI/CD; Nginx; Apache; Prometheus; Grafana.

Work Model

Hybrid

Internal Ref: Administrator

Date Posted: 2025-09-01

Valid Through: 2025-11-01