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Optasia

Linux Systems Engineer, Fintech

Optasia

. Administer and maintain Linux systems (Red Hat and Debian) across production and staging environments.

Posted 11/5/2026full-timeAthens • GreeceMid-LevelSeniorWebsite

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in administering and maintaining Linux systems, particularly Red Hat and Debian, while ensuring system reliability through effective incident management and performance monitoring. Proficient in scripting and automation to enhance operational efficiency and support cross-functional collaboration.

Highest-signal resume keywords
Linux Systems AdministrationRed Hat Enterprise LinuxDebian AdministrationIncident ManagementScripting (Bash, Python, Ansible)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Linux Systems AdministrationRed Hat Enterprise LinuxDebian AdministrationIncident ManagementSystem PatchingPerformance MonitoringScripting (Bash)Scripting (Python)Automation (Ansible)Root Cause Analysis
Soft Skills
Documentation SkillsCommunication SkillsCollaboration Skills
Tools & Technologies
NagiosGrafanaFreeIPADNSRadiusJenkinsRed Hat Satellite
Industry Keywords
System Performance MonitoringSecurity HardeningOperations & MaintenanceLicense ManagementEnd of Support Management

Tech Stack

Tools & technologies
AnsibleDNSGrafanaJenkinsLinuxPython

About the role

Key responsibilities & impact
  • Administer and maintain Linux systems (Red Hat and Debian) across production and staging environments.
  • Perform regular patching, system updates, and security hardening.
  • Manage and monitor system performance using Nagios, Grafana, and related tools.
  • Support and maintain applications including Passbolt, DNS, FreeIPA, Radius, Jenkins, and Red Hat Satellite.
  • Handle incident management, troubleshooting, and root cause analysis to ensure system reliability and uptime.
  • Participate in operations & maintenance tasks and system improvement initiatives.
  • Track and manage licenses, End of Support, and End of Life for Linux assets and software.
  • Collaborate with cross-functional teams to support infrastructure and authentication services.
  • Maintain accurate documentation for configurations, changes, and operational procedures.

Requirements

What you’ll need
  • 3-5 years of hands-on experience as a Linux Systems Engineer or Administrator.
  • Strong knowledge of Red Hat Enterprise Linux and Debian administration.
  • Experience with FreeIPA, DNS, and Red Hat Satellite.
  • Familiarity with Nagios, Grafana, and Radius.
  • Solid understanding of system patching, incident management, and O&M processes.
  • Scripting or automation skills (Bash, Python, Ansible).
  • Good documentation, communication, and collaboration skills.

Benefits

Comp & perks
  • Work from anywhere policy (90-day per year)
  • Competitive remuneration package
  • Extra day off on your birthday
  • Performance-based bonus scheme
  • All the tech gear you need to work smart