Senior Mainframe Network Systems Programmer (IBM z/OS & TCP/IP)

• Configure, maintain, and optimize IBM Communication Server for z/OS environments to ensure reliable network communications.
• Administer and support VTAM and TCP/IP networking infrastructure across mainframe platforms.
• Analyze and resolve complex network connectivity, latency, and performance issues using TRACE diagnostics, including packet, component, and OSA traces.
• Monitor, tune, and maintain network communications to ensure system stability, availability, and performance.
• Support mainframe certificate management activities, including implementation and maintenance of secure communication configurations.
• Administer and support secure file transfer operations using Connect:Direct for automated and business-critical data exchanges.
• Participate in infrastructure upgrade projects, disaster recovery testing, and operational readiness activities.
• Develop and maintain automation scripts using REXX, CLIST, or JCL to streamline routine network administration tasks.
• Create and maintain technical documentation in compliance with organizational and regulatory requirements.
• Provide technical support during production incidents and participate in a 24x7 on-call rotation for critical business services.

Proficient

• IBM z/OS
• TCP/IP
• TRACE

Intermediate

• Connect:Direct

• Deep technical understanding of IBM z/OS operating system architecture and system libraries.
• Strong hands-on experience with IBM Communication Server for z/OS environments.
• Advanced troubleshooting and problem determination skills within mainframe networking environments.
• Experience in automating operational activities using REXX, CLIST, or JCL.
• Excellent analytical, documentation, verbal, and written communication skills.
• Ability to manage multiple priorities in a fast-paced infrastructure environment.