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We are seeking a Mainframe Network / Communication Server Systems Programmer, responsible for the installation, configuration, maintenance, and performance management of IBM Communications Server and enterprise mainframe networking infrastructure on IBM z/OS platforms. The individual will support highly available enterprise environments consisting of multiple production and disaster recovery LPARs supporting mission-critical business applications. Should have experience in Datacenter migrations.
Qualifications
- Expertise in IBM Communications Server (VTAM/TCP-IP)
- z/OS Communications Server administration
- Enterprise Extender (EE), SNA, TCP/IP networking
- OSA, HiperSockets,



Sysplex networking
- TLS/SSL, AT-TLS, SAF/RACF security integration
- Network performance tuning and troubleshooting
- Network automation and monitoring tools

ADVANCED ENGLISH IS A MUST
Hybrid role in Guadalajara or Mexico City
Core Responsibilities
- System Installation and Maintenance: Install, configure, upgrade, and maintain IBM z/OS Communications Server components including VTAM, TCP/IP, Enterprise Extender (EE), FTP, Telnet, TN3270, and related networking products. Apply software maintenance, PTFs, and version upgrades using SMP/E while ensuring compliance with vendor recommendations and organizational standards. Maintain network definitions, startup procedures, and configuration datasets.
- Network Infrastructure Management: Configure and administer SNA and TCP/IP networking environments. Support OSA Express adapters, HiperSockets, Sysplex Distributor, Dynamic VIPA (DVIPA), and Paralle

📌 Mainframe Network Systems Programmer (Guadalajara)
🏢 Cognizant
📍 Guadalajara