Senior Linux Engineer — Hybrid, Automation & Security

GFT Technologies SE; Polska; Hybrid; PLN 176,000 - 271,000; Full time

Benefits offered by this job

Hybrid work arrangement

Medical insurance

Lunch subsidy

Life insurance

Job summary

GFT Technologies SE is seeking a skilled Linux administrator to support and maintain enterprise Linux environments within an international team. You will strengthen security, automate infrastructure, and manage deployments in a hybrid work setup in Kraków.

The role emphasizes Jenkins automation, Tomcat/JBoss administration, and strong collaboration across cross-functional groups. Ideal candidates have hands-on Linux, security remediation, CI/CD pipelines, and scripting skills, plus experience in

Qualifications

• Hands-on Linux administration and system security experience.
• Experience with Jenkins and automation workflows.
• Proficient in shell scripting and CI/CD pipelines.
• Familiarity with Tomcat or Red Hat JBoss Web Server (JWS).
• Strong debugging, monitoring and troubleshooting skills.
• Good communication in international teams.

Responsibilities

• Manage and maintain Linux environments for stability and security.
• Identify, analyze and remediate security vulnerabilities.
• Develop and maintain Jenkins pipelines and automation workflows.
• Administer and troubleshoot Tomcat/JBoss Web Server environments.
• Perform system monitoring, performance tuning and RCA.
• Support deployments and release activities.
• Collaborate with development and infrastructure teams on production issues.
• Ensure compliance with security and operational requirements.
• Create and maintain technical documentation.

Skills

Linux administration

Security & vulnerability remediation

Jenkins

Automation tools

Shell scripting

CI/CD pipelines

Tomcat/JBoss Web Server

System monitoring

Networking fundamentals

International teamwork

Tools

IBM WebSphere Liberty (WLP)

IBM MQ

IBM App Connect Enterprise (ACE)

Containerization

Cloud platforms

Ansible

Job description

GFT Technologies SE is seeking a skilled Linux administrator to support and maintain enterprise Linux environments within an international team. You will strengthen security, automate infrastructure, and manage deployments in a hybrid work setup in Kraków.

The role emphasizes Jenkins automation, Tomcat/JBoss administration, and strong collaboration across cross-functional groups. Ideal candidates have hands-on Linux, security remediation, CI/CD pipelines, and scripting skills, plus experience in