TXT e-Tech is looking for a System Administrator with experience in Linux operating systems to join a new project in the defense sector. The selected candidate will work within a structured team, managing and maintaining a Linux-based IT infrastructure, ensuring reliability, security and performance of physical and virtual servers. Main Responsibilities Management, configuration and maintenance of Linux systems Software installation and updates User, permissions and services management Monitoring of system processes and performance Security patching and system hardening activities Automation of tasks through scripting (bash) Support in change management activities Required Technical Skills Solid experience in Linux System Administration Network configuration and troubleshooting skills Knowledge of main communication protocols (TCP/IP, UDP, SNMP, RS232/422, 1553) Knowledge of cybersecurity principles (encryption, OS hardening, Common Criteria) Experience with Change Management tools (Git, CVS, IBM RTC, DOORS) Experience in developing and implementing Cyber solutions on Linux systems Knowledge of bash scripting Soft Skills Problem-solving attitude Teamworking skills Education Bachelor’s or Master’s degree in STEM disciplines. Why choose TXT Group: Career opportunities in a fast-growing and profoundly changing company, with young and international staff; Training on topics related to the activity carried out; Corporate Benefits (health insurance, welfare, Ticket Restaurant, discounts as an employee of the group); Team Building moments that allow the creation of a cohesive team and a good working climate; Permanent contract, based on the technical skills emerged from the interview. This position is open to applicants of all genders in accordance with Italian Legislative Decree 198/2006. The company promotes equal opportunities and values diversity in all its forms.