NTT DATA in Madrid is seeking a z/OS Systems Specialist to join a team supporting a large-scale mainframe network. You will configure and maintain security for the host subsystems and IP communications, and provide 24x7 support as part of a multi-functional team. The role requires extensive experience with Connect: Direct/FTP, z/OS networking, and network security. Strong problem-solving and collaboration skills are essential to meet tight deadlines and complex environments. #J-18808-Ljbffr