**Req ID:** 334326 NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now. 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** Producing clear system diagrams, runbooks, and upgrade plans, while collaborating with application teams, storage, networking, and security groups. **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 minimal 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 terms Analytical 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 response Adaptability & 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 tools Patience & Resilience • Handling legacy systems with limited documentation • Managing long upgrade cycles and complex migrations • Remaining calm during critical system failures or audits Attention 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** NTT DATA is a $30 billion trusted global innovator of business and technology services. We serve 75% of the Fortune Global 100 and are committed to helping clients innovate, optimize and transform for long term success. As a Global Top Employer, we have diverse experts in more than 50 countries and a robust partner ecosystem of established and start-up companies. Our services include business and technology consulting, data and artificial intelligence, industry solutions, as well as the development, implementation and management of applications, infrastructure and connectivity. We are one of the leading providers of digital and AI infrastructure in the world. NTT DATA is a part of NTT Group, which invests over $3.6 billion each year in R&D to help organizations and society move confidently and sustainably into the digital future. Visit us at us.nttdata.com (http://us.nttdata.com/en) Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in-office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com and @talent.nttdataservices.com email addresses. If you are requested to provide payment or disclose banking information, please submit a contact us form, https://us.nttdata.com/en/contact-us . **_NTT DATA endeavors to make_** **_https://us.nttdata.com_** **_accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact us at_** **_https://us.nttdata.com/en/contact-us_** **_._** **_This contact information is for accommodation requests only and cannot be used to inquire about the status of applications. NTT DATA is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. For our EEO Policy Statement, please click here (http://us.nttdata.com/en/compliance#eeos) . If you'd like more information on your EEO rights under the law, please click here (http://us.nttdata.com/en/compliance#know-your-rights) . For Pay Transparency information, please click here (http://us.nttdata.com/en/compliance#ppnp) ._**