Remote Mainframe Network System Programmer
DMS Vision•Frisco, TX
•Remote
About The Position
The Mainframe Network System Programmer installs, configures, customizes, and supports networking software and communication subsystems in IBM z/OS mainframe environments. The role ensures secure, reliable, high-performance connectivity between mainframes, distributed platforms, and enterprise applications, and collaborates with infrastructure, security, and application teams. The position is remote and is described as a 12–24 month project.
Requirements
- Strong experience with IBM z/OS mainframe networking, including TCP/IP, VTAM, and SNA.
- Hands-on knowledge of Enterprise Extender (EE), HiperSockets, and NetView.
- Proficiency configuring IP, routing, DNS, FTP, TN3270, and network encryption protocols.
- Experience using SMP/E for maintenance and upgrades.
- Strong troubleshooting, dump analysis, and performance-tuning skills.
- Familiarity with JCL, REXX, and automation tools.
- 10 years of relevant experience is stated in the job posting.
- U.S. Citizen or Green Card holder preferred.
Nice To Haves
- Experience in Sysplex networking, multi-stack environments, and high availability.
- Knowledge of mainframe integration with distributed systems over TCP/IP.
- Exposure to OMEGAMON for IP, NetView, or equivalent monitoring tools.
- Familiarity with ITIL incident, change, and problem management processes.
- Experience supporting audits and compliance, including SOX, PCI-DSS, or ISO 27001.
- The preferred qualifications section specifies 5 or more years of experience as a Mainframe Network System Programmer.
Responsibilities
- Install, configure, and upgrade mainframe networking components, including 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.
- Provide technical support for mainframe networking subsystems and troubleshoot communication failures, SNA/VTAM issues, TCP/IP connectivity problems, and performance bottlenecks.
- Support integration with CICS, IMS, DB2, and MQ.
- Manage network-related IPL considerations, traces, dumps, and log analysis.
- Monitor and tune TCP/IP stacks, VTAM definitions, and Enterprise Extender connections; optimize session routing, buffer sizes, and bandwidth utilization.
- Forecast capacity and plan for network growth or upgrades.
- Implement and maintain network security controls with RACF/ACF2/TSS; configure firewalls, AT-TLS, IPSec, and secure sockets for encrypted communication.
- Ensure compliance with SOX, PCI-DSS, ITGC, and internal security policies.
- Develop and test mainframe networking disaster recovery plans; participate in DR exercises and support connectivity between production and recovery sites.
- Support high availability and failover strategies for network components.
- Plan and execute software migrations, feature enablement, and new deployments.
- Document networking configurations, changes, and troubleshooting procedures, and follow ITIL incident, problem, and change management processes.
- Collaborate with system programmers, storage, security, and distributed network teams.
- Provide 24x7 on-call support for critical networking issues.
- Assist application developers with network connectivity for mainframe-based applications.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
