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Software Development and Nearshore Staff Augmentation
Mainframe z/OS Systems Programmer
Location
Mexico
Posted
68 days ago
Salary
0
Seniority
Lead
Job Description
Mainframe z/OS Systems Programmer
NTD Software
• Manage and optimize z/OS environments, including IPL procedures, JES2/JES3, Sysplex configurations, and SMF data collection. • Develop and maintain system-level routines and automation using Assembler, REXX, and JCL. • Administer hardware and logical resources across LPARs, including DASD/tape allocation, HMC configuration, and security management with RACF or equivalents. • Troubleshoot system issues, perform dump analysis, and resolve performance anomalies using IPCS, SLIP, trace tools, and system logs. • Ensure data integrity and recovery readiness using DFSMShsm, FDR/ABR, FlashCopy, and virtual tape replication. • Monitor and optimize system performance using RMF/SMF reports, OMEGAMON/BMC MainView dashboards, and WLM tuning. • Configure and maintain mainframe networking, including VTAM, SNA, TCP/IP stacks, OSA adapters, and Coupling Facility communication. • Produce clear documentation, runbooks, and upgrade plans while collaborating with cross-functional teams. • Execute OS and product upgrades with SMP/E, z/OSMF workflows, and Broadcom, IBM, or BMC tooling. • Plan and lead hardware refreshes, feature activations, and migrations with minimal downtime, including IPL scheduling and vendor coordination. • Mentor junior staff and share knowledge on mainframe best practices, automation, and tooling.
Job Requirements
- 15+ years of experience in mainframe z/OS systems programming.
- Strong expertise in hardware refreshes, system upgrades, SMP/E, z/OSMF, and enterprise tooling from Broadcom, IBM, and BMC.
- Proficiency in Assembler, REXX, and JCL scripting for automation and system routines.
- Deep knowledge of z/OS architecture, JES2/JES3, Sysplex management, SMF, and parmlib customization.
- Hands-on experience with backup/recovery, performance monitoring, and problem-solving in large-scale mainframe environments.
- Familiarity with RACF or equivalent security administration.
- Excellent analytical, troubleshooting, and project management skills.
- Strong communication skills, with the ability to collaborate across teams and explain technical issues to non-technical stakeholders.
- Demonstrated adaptability and continuous learning, keeping current with z/OS updates, hybrid cloud trends, and modern automation tools.
- Attention to detail, patience, and resilience in managing complex, legacy systems.
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