The Role
This role involves managing and optimizing z/OS systems while ensuring stability and performance, leading upgrades, and mentoring junior staff.
Summary Generated by Built In
We are seeking a highly skilled Senior Mainframe z/OS Systems Programmer to join our team. In this role, you will lead hardware refreshes, system upgrades, and enterprise tooling initiatives while ensuring the stability, performance, and compliance of our mission-critical mainframe environment. The ideal candidate has deep expertise in z/OS systems, SMP/E, z/OSMF workflows, and enterprise tools from Broadcom, IBM, and BMC, combined with strong problem-solving skills and a collaborative mindset.
Key Responsibilities:
- 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.
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.
If you are passionate about mainframe technology and enjoy working on complex, mission-critical systems, we would love to hear from you. Join us to take your expertise to the next level and make a meaningful impact in a collaborative and innovative environment.
Top Skills
Assembler
Bmc Mainview
Bmc Tools
Broadcom Tools
Coupling Facility
Dfsmshsm
Fdr/Abr
Flashcopy
Ibm Tools
Jcl
Jes2
Jes3
Omegamon
Racf
Rexx
Rmf
Smf
Smp/E
Sna
Sysplex
Tcp/Ip
Vtam
Z/Os
Z/Osmf
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The Company
What We Do
NTD Software is a Mexican company located in Guadalajara, Jalisco, known as "the silicon valley of Mexico." We help both startups and big companies by finding the right people to join their team and creating digital solutions using the latest or well-established programming languages and tools. Our expertise is in building software from the ground up and expanding our clients' existing teams, allowing us to work with businesses globally
