100% Remote Mainframe Network System Programmer

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Hope all is well,

Please revert me with an updated resume if you would like to apply for this role,

100% Remote Mainframe Network System Programmer

12-24 month project

Relevant experience 10 Years

The Mainframe Network System Programmer is responsible for the installation, configuration, customization, and ongoing support of networking software and communication subsystems on IBM z/OS mainframe environments. This role ensures secure, reliable, and high-performance network connectivity between mainframe systems, distributed platforms, and enterprise applications. The position requires expertise in TCP/IP, VTAM, SNA, and related communication protocols, as well as collaboration with infrastructure, security, and application teams.

Key Responsibilities

Installation & Maintenance

• Install, configure, and upgrade mainframe networking components such as TCP/IP, VTAM, Enterprise Extender (EE), and NetView.
• Apply PTFs, APARs, and maintenance updates using SMP/E.
• Customize communication parameters, exits, and profiles to meet business requirements.

System Programming & Support

• Provide technical support for mainframe networking subsystems.
• Troubleshoot communication failures, SNA/VTAM issues, TCP/IP connectivity problems, and performance bottlenecks.
• Support integration with mainframe subsystems such as CICS, IMS, DB2, and MQ.
• Manage network-related IPL considerations, traces, dumps, and log analysis.

Performance & Capacity Management

• Monitor and tune TCP/IP stacks, VTAM definitions, and Enterprise Extender connections.
• Optimize session routing, buffer sizes, and bandwidth utilization for efficiency.
• Forecast capacity and plan for network growth or upgrades.

Security & Compliance

• Implement and maintain network security controls in coordination with RACF/ACF2/TSS.
• Configure firewalls, AT-TLS (Application Transparent TLS), IPSec, and secure sockets for encrypted communication.
• Ensure compliance with SOX, PCI-DSS, ITGC, and internal security policies.

Disaster Recovery & Business Continuity

• Develop and test mainframe networking disaster recovery plans.
• Participate in DR exercises, ensuring connectivity between production and recovery sites.
• Support high availability and failover strategies for network components.

Change & Release Management

• Participate in planning and execution of software migrations, feature enablement, and new deployments.
• Document networking configurations, changes, and troubleshooting procedures.
• Adhere to ITIL processes for incident, problem, and change management.

Collaboration & Support

• Work closely with system programmers, storage, security, and distributed network teams.
• Provide 24x7 on-call support for critical networking issues.
• Assist application developers in configuring network connectivity for mainframe-based applications.

Required Skills & Qualifications

• Strong experience with IBM z/OS mainframe networking (TCP/IP, VTAM, SNA).
• Hands-on knowledge of Enterprise Extender (EE), HiperSockets, and NetView.
• Proficiency in configuring IP, routing, DNS, FTP, TN3270, and network encryption protocols.
• Experience with SMP/E for maintenance and upgrades.
• Strong troubleshooting, dump analysis, and performance tuning skills.
• Familiarity with JCL, REXX, and automation tools.

Preferred Qualifications

• 5+ years of experience as a Mainframe Network System Programmer.
• Experience in Sysplex networking, multi-stack environments, and high availability.
• Knowledge of mainframe integration with distributed systems over TCP/IP.
• Exposure to monitoring tools such as OMEGAMON for IP, NetView, or equivalent.
• Familiarity with ITIL processes (Incident, Change, Problem Management).
• Experience in audit and compliance support (SOX, PCI-DSS, ISO27001, etc.).

Thank you

[email protected]

972-645-0322, 110