Administrador de Sistemas Linux

Closer Consulting; Lisboa; Hybrid; EUR 40,000 - 65,000; Full time

Benefits offered by this job

Home office kit

Career plan

Custom training plan

Job summary

Closer Consulting, a Lisbon-based Data Science company, is seeking a skilled Linux/Unix Systems Administrator for a hybrid role (2 days on-site) in Lisbon. The role focuses on managing Linux Enterprise infrastructures, high-availability setups, and containerization platforms to support critical production environments.

You will collaborate with Cloud, Security, and Application teams to ensure system reliability, security, and continuous improvement across enterprise projects with world-class

Qualifications

• At least 3 years of Linux/Unix systems administration in enterprise environments.
• Experience with RHEL, Oracle Linux, SLES, and Debian.
• Experience with Pacemaker clustering.
• Experience with virtualization and container platforms.
• Knowledge of Foreman for systems management.
• Knowledge of Kubernetes and Docker (highly valued).
• Solid understanding of TCP/IP networking in Linux environments.
• Experience with automation tools and IaC, particularly Ansible (highly valued).
• Shell scripting (Bash) for automation.
• Proven ability to diagnose and resolve production incidents.
• Involvement in evolution projects, capacity planning, and continuous improvement.
• Strong troubleshooting, security, and service continuity focus.
• Collaborative mindset with Cloud, Security, and Application teams.

Skills

Linux/Unix admin

RHEL/OEL/SLES/Debian

Pacemaker clustering

Virtualisation

Docker/Kubernetes

Foreman

Ansible IaC

Shell scripting

Networking TCP/IP

Incident resolution

Security & continuity

Team collaboration

Tools

Foreman

Kubernetes

Docker

Job description

Mutual Respect, Empathy, Innovation, and Professional Pride. Do you see yourself within these values?

Founded in 2006 with the mission "To Challenge Complexity", Closer Consulting is a Data Science company specialising in Business Intelligence, Advanced Analytics, and Artificial Intelligence. Developing projects across a wide range of industries—including Banking, Telecommunications, Healthcare, Retail, Energy, Insurance, and Aviation—we have created an environment where the brightest inquiring minds feel at home, providing our people with the means, opportunities, and support they need to thrive and innovate.

We are seeking a skilled Linux/Unix Systems Administrator eager to take on new challenges in a hybrid work model (2 days per week on-site) in Lisbon.

Are you the one?

• At least 3 years of experience in Linux/Unix systems administration within enterprise environments.
• Solid experience managing and optimizing Linux Enterprise infrastructures in critical environments (Red Hat Enterprise Linux, Oracle Linux, SUSE Linux Enterprise Server, and Debian).
• Practical experience in high-availability environments using Pacemaker Cluster.
• Experience in administering virtualised environments and containerisation platforms.
• Knowledge of Foreman for systems management and provisioning.
• Knowledge of Kubernetes and Docker (highly valued).
• Solid understanding of TCP/IP networking and troubleshooting within Linux environments.
• Experience with automation tools and Infrastructure as Code, particularly Ansible (highly valued).
• Proficiency in Shell Scripting (Bash) for operational automation.
• Proven capability in diagnosing, analysing, and autonomously resolving complex production incidents.
• Involvement in technological evolution projects, capacity planning, and continuous improvement initiatives.
• Strong focus on troubleshooting, system security, and service continuity.
• Collaborative mindset to work effectively with Cloud, Security, and Application teams.

We believe we are the ones, by:

• Providing a multidisciplinary Team.
• Giving a home office kit with everything you need to perform remotely.
• Ensuring a career plan alongside professional growth.
• Providing you with a custom training plan.

Oh… and by the way, we also have:

• Several challenging complex projects.
• Stimulating teams and leaders.
• World-class Clients and Partners.

Closer is a company that values diversity and inclusion. We are committed to fostering an environment where everyone is treated with dignity and respect, regardless of race, gender, beliefs, sexual orientation, physical or mental disability, or other personal characteristics.

At Closer, we embrace the unique perspectives and experiences that everyone brings, and we believe that it is a fundamental driver for the success we've achieved.