DXC Technology España is seeking a senior Mainframe Network System Programmer to manage and secure z/OS network services, TCP/IP, and VTAM/SNA in a integral, high-availability environment. You will lead migrations, upgrades, and disaster recovery efforts while mentoring others. The role requires strong debugging skills, experience with security technologies, and a 24x7 on-call rotation to support international operations. English fluency is essential. #J-18808-Ljbffr