Linux Administrator

Lognext; España; Hybrid; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Hybrid work

Annual professional development budget

Equality & diversity initiatives

Job summary

Lognext is seeking a talented Unix Administrator in Madrid to join a multinational banking sector leader. The role focuses on administration of Unix-based servers (RHEL, Ubuntu, Debian) within a large hybrid infrastructure of physical and virtual servers supporting mission-critical apps.

You will implement automation, drive patching and configuration management, ensure high availability, and collaborate across teams to meet SLA deadlines while continuously improving processes and security

Qualifications

• Proven expertise with Unix/Linux (RHEL, Ubuntu, Debian).
• High-availability technologies and automation frameworks experience.
• Ability to translate technical details for diverse audiences.
• Proactive mindset to learn, improve, and automate repetitive production tasks.
• Advanced admin and troubleshooting on large-scale environments (>10,000 servers).
• Automation and scripting with Ansible to build repeatable playbooks.

Responsibilities

• Monitor, tune and troubleshoot the server fleet to meet SLA deadlines.
• Design, script and implement automated workflows for provisioning, configuration, patching and compliance.
• Deploy, configure and support HA solutions to guarantee uninterrupted production services.
• Perform hardening, patch management and timely vulnerability remediation.
• Stay current with emerging tools and CI/CD ecosystems (Jira, Bitbucket, GitLab, Jenkins).

Skills

Unix/Linux

High Availability

Automation

Scripting

Ansible

CI/CD

Infoscale Veritas

OpenSVC

Puppet

AD/Centrify

Tools

Satellite

Landscape

GitLab

Job description

At Lognext we have been accompanying companies and teams for more than 18 years to identify and implement the technology necessary to advance, making their challenges and objectives our own and getting closer to their reality. Therefore, being a NEXTER means that your career and talent become meaningful to you and those around you, allowing you to build what matters most to you and reach your next level.

We are looking for a talented Unix Administrator to join our team for a multinational leader in the banking sector located in Madrid.

This role is responsible for the administration of Unix‑based servers, primarily RHEL, Ubuntu and Debian. Our environment spans a large, hybrid infrastructure of physical and virtual servers that supports mission‑critical applications and continuous production workloads.

• Ensure production stability – monitor, tune and troubleshoot the server park so that all services meet their SLA deadlines and remain available for end‑user operations.
• Drive process‑automation – design, script and implement automated workflows (e.g., provisioning, configuration management, patching, and compliance checks) that reduce manual effort, accelerate delivery, and improve repeatability across the whole fleet.
• Maintain high‑availability architectures – deploy, configure and support HA solutions (clustering, load‑balancing, fail‑over) to guarantee uninterrupted production services.
• Security & compliance – perform hardening, vulnerability remediation, and patch management in a timely, deadline‑oriented manner, ensuring that security controls never become a bottleneck for production.
• Adaptability & continuous learning – stay current with emerging tools (Ansible, Python, CI/CD, etc.) and be ready to pivot when production requirements evolve or new technologies are introduced

What we look for

• Proven expertise with Unix/Linux (RHEL, Ubuntu & Debian)..
• Strong background in high‑availability technologies and process‑automation frameworks.
• Excellent communication and planning skills – you can translate technical details into clear actions for both technical and non‑technical audiences.
• A proactive mindset eager to learn, improve, and automate every repetitive task that touches the production line.
• Advanced administration & troubleshooting on RHEL, Ubuntu & Debian in large‑scale environments ( > 10 000 servers).
• Automation & scripting – proven expertise with Ansible to build repeatable playbooks for provisioning, configuration, compliance and patching.
• High‑availability clustering – hands‑on experience with Veritas Infoscale Foundation and OpenSVC.
• Additional automation platforms like Puppet (or similar).
• Identity & access knowledge – Active Directory, Centrify.
• Enterprise patch‑management tools – Satellite, Landscape.
• CI/CD ecosystem familiarity – Jira, Bitbucket, GitLab, Jenkins, etc.

Job Conditions & Benefits:

Work Mode: Hybrid, 4 days onsite/ per month (Madrid)

Professional Development: Access to an annual budget dedicated to advancing your skills through professional certifications.

Join our expert team, where creativity, commitment and the ability to bring new perspectives are essential to make a difference in a world full of opportunities.

Are you ready for your NEXT LEVEL?

In Lognext we are committed to equality between women and men and as proof of this we have a registered and published Lognext Equality Plan. We also believe that multiculturalism is a source of values, experiences and knowledge that add value to our projects, which is why we believe in diversity, and we are committed to it. We work every day to create environments where people are treated with respect and dignity no matter where they come from, we do not discriminate based on race, religion or beliefs, ethnicity, disability, age, nationality, marital status, sexual orientation, or gender.