Senior Linux Engineer

What will you do? You will support and maintain Linux-based environments, ensuring their stability, security, and performance. Working closely with cross-functional teams, you will contribute to vulnerability remediation, infrastructure automation, and operational improvements. As part of an international technology environment, you will help deliver reliable infrastructure solutions, support middleware platforms, and maintain high operational standards across the organization. We offer Hybrid work in one of our client's office (Kraków) 8 office days per month. Working in a highly experienced and dedicated team. Benefit package tailored to your needs (medical, sport, lunch subsidy, life insurance, etc.). Online training and certifications. Access to e-learning platform. Social events. Daily tasks: - Manage and maintain enterprise Linux environments - Identify, analyze and remediate security vulnerabilities - Implement and support infrastructure automation solutions - Develop and maintain Jenkins pipelines and automation workflows - Administer and troubleshoot Tomcat and JBoss Web Server environments - Perform system monitoring, performance tuning and root cause analysis - Support application deployments and release activities - Collaborate with development and infrastructure teams to resolve production issues - Ensure compliance with security and operational requirements - Create and maintain technical documentation Strong hands-on experience with Linux administration Experience with system security, hardening and vulnerability remediation Hands-on experience with Jenkins and automation tools Experience with shell scripting Experience with CI/CD pipelines and deployment processes Knowledge of Tomcat or Red Hat JBoss Web Server (JWS) Experience with system monitoring and troubleshooting Understanding of networking and operating system fundamentals Strong analytical and problem-solving skills Good communication skills and experience working in international teams Nice to have Knowledge of IBM WebSphere Liberty (WLP) Knowledge of IBM MQ Knowledge of IBM App Connect Enterprise (ACE) Experience in the banking or financial services sector Experience with containerization technologies Experience with cloud platforms Experience with Ansible or other configuration management tools Must have: Linux, System security, Jenkins, Shell Scripting, CI/CD, Tomcat, Red Hat Nice to have: IBM MQ, IBM WLP, IBM App, Ansible