Mainframe Os Systems Programmer

**Req ID**: We are currently seeking a Mainframe OS Systems Programmer to join our team in Guadalajara, Jalisco (MX-JAL), Mexico (MX).Comprehensive responsibility breakdown, skills matrix and soft skills for a **Mainframe z/OS Systems Programmer** specializing in **hardware refresh, product upgrades, and software lifecycle management** using advanced tools like **SMP/E, z/OSMF, Broadcom, IBM, and BMC utilities.****Years of experience required**: +15 yrs**Responsibilities**:**Operating System Knowledge**Deep mastery of z/OS architecture, including IPL procedures, JES2/JES3 configurations, Sysplex management, SMF data collection, and parmlib customization.**Programming Skills**Proficient in writing and debugging system-level routines and automation:- Assembler for exits and control blocks- REXX for scripting and batch utilities- JCL for job submission, parameterization, and workflow control**System Administration**Managing hardware and logical resources across LPARs:- DASD and tape allocation via HCD/HCM- LPAR configuration in HMC- Security administration using RACF or equivalent**Problem-Solving Skills**Analytical troubleshooting of abends, storage hangs, and performance anomalies using:- Dump analysis with IPCS- SLIP and trace tools- System logs and console messages**Backup and Recovery**Ensuring data integrity and swift recovery with:- DFSMShsm policies and recall management- FDR/ABR for high-speed backups- FlashCopy or virtual tape replication for near-instant restores**Performance Monitoring**Optimizing system throughput and response times utilizing:- RMF and SMF report analysis- OMEGAMON or BMC MainView dashboards- WLM classification and tuning**Networking Knowledge**Configuring and supporting mainframe connectivity:- VTAM and SNA definitions- TCP/IP stack on z/OS- OSA adapter and Coupling Facility communication**Documentation and Communication****Continuous Learning**Staying current on IBM Redbooks, z/OS release notes, firmware updates, and attending vendor training (IBM, Broadcom, BMC) or industry conferences.**Software Maintenance & Upgrade Tools**Executing OS and product upgrades with industry-standard utilities:- SMP/E for PTF, APAR, and deliverable management- z/OSMF workflows for streamlined maintenance- Broadcom (e.g., Topaz), IBM, and BMC tooling for fix management and compliance reporting**Project Management & Hardware Refresh**Planning and leading hardware refreshes, feature activations, and migrations with mínimal downtime, including IPL scheduling, vendor coordination, and change-control governance.Soft Skills:Communication & Collaboration- Clear documentation of system changes, configurations, and procedures- Cross-functional teamwork with developers, DBAs, and network engineers- Stakeholder engagement to explain technical issues in business termsAnalytical Thinking & Problem Solving- Root cause analysis for system outages and performance issues- Pattern recognition across logs, dumps, and metrics- Decision-making under pressure, especially during incident responseAdaptability & Continuous Learning- Staying current with z/OS updates, SMP/E practices, and IBM tools- Embracing modernization trends like Zowe, z/OSMF, and hybrid cloud integration- Learning new scripting languages (REXX, CLIST) and automation toolsPatience & Resilience- Handling legacy systems with limited documentation- Managing long upgrade cycles and complex migrations- Remaining calm during critical system failures or auditsAttention to Detail- Precision in JCL scripting, IPL procedures, and system configurations- Vigilance in security settings, RACF profiles, and access controls- Thoroughness in change management and rollback planning**About NTT DATA