DESCRIPTION We are looking to hire a **UNIX / LINUX Systems Administrator** with a minimum of 3 years of experience. The position will be on-site at the Air Traffic Control Center in Gavà (Barcelona). **Responsibilities:** * UNIX/LINUX Systems Administration. * Management of data communications in local area networks. * Working with X86\ architectures. * Once the candidate has acquired sufficient knowledge, they will be required to perform 24-hour telephone on-call duties. These shifts will be shared with another employee, approximately 50% of the time (one week on, one week off). The on-call phone receives few calls and is always supported by additional levels of assistance. * Availability to travel nationally, with an estimated frequency of no more than three trips per year, each lasting about three days. **What we offer:** * Indefinite contract with us. * Working hours: 08:00 to 09:00 and 17:00 to 18:00, with flexibility regarding start and end times; Fridays and summer hours from 08:00 to 15:00. * Professional development. * Job stability. * On-site work at the Air Traffic Control Center in Gavà (Barcelona). * Salary: Open \+ access to flexible compensation. REQUIREMENTS * Degree: Technical Engineering in Telecommunications or Computer Science. * Experience as a Systems Administrator. * Knowledge of UNIX/LINUX operating systems. * Knowledge of data communications in local area networks. * Knowledge of X86\ architectures. * Experience with Red Hat. * Experience with Cisco. * Intermediate level of English.