**Req ID:** 324254 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 System Engineer to join our team in CDMX, Ciudad de México (MX-CMX), Mexico (MX). **Job Summary** The **Mainframe Systems Engineer** is responsible for the design, optimization, and modernization of Toyota’s mainframe systems. This role requires expertise in **z/OS upgrades, network management (printers, TLS, mail), automation (REXX, tools), storage solutions (Hitachi & VTS), and hardware uplift** . Additionally, the engineer will lead **service improvement, best practice implementation, software rationalization, Broadcom elimination efforts, and mainframe modernization solutions** . **Key Responsibilities** + **Perform z/OS upgrades** to maintain system stability and compliance. + **Troubleshoot and resolve technical showstoppers** during **datacenter migration** and **z/OS operations** . + **Automate system processes** using **REXX and mainframe tools** to improve efficiency. + **Manage network infrastructure** , including **printers, TLS, and mail services** . + **Oversee storage solutions** for **Hitachi & Virtual Tape Storage (VTS)** . + **Collaborate with vendors** on **software licensing, hardware uplift, and modernization initiatives** . + **Drive software rationalization** , reducing redundancy and optimizing costs. + **Lead Broadcom elimination project** , ensuring transition to more effective solutions. + **Engage in Severity 1 & 2 incident resolution** , providing technical expertise for critical issues. + **Implement service improvement strategies** and **standardization efforts** for operational excellence. + **Ensure SOX compliance** , maintaining strict regulatory adherence and documentation. **Time Allocation of Responsibilities** **Major Activity** **% of Time** Assist in Mainframe Modernization Strategy development 5% Provide technical advisory services to IT and business teams 5% Evaluate mainframe, storage, and network architecture to address gaps 5% Address technical showstoppers and z/OS operational issues 35% Work with software vendors on licensing, support, and product management 10% Coordinate mainframe cost reduction initiatives (SF migration, licensing renewals) 10% Manage hardware and software upgrades 10% Support incident management, operational reviews, space management, and disaster recovery planning 20% **Key Working Relationships** **Contact** **Purpose** **Frequency** IMS Vendor – Hardware Support Incident resolution, upgrades, disaster recovery Daily IMS Vendor – Operations Support Mainframe operational troubleshooting Daily Independent Software Vendor (ISV) Software licensing, support, and problem resolution As Needed Application SMEs Validation and testing coordination As Needed Enterprise Architects Solution design, security compliance, modernization strategy Weekly SOX Auditors Compliance documentation and remediation As Needed **Decision-Making & Accountability** 1. **Vendor Management** – Prioritizing vendor tasks and ensuring SLA performance. 2. **System Modernization Strategy** – Aligning mainframe transformation with Toyota’s future roadmap. 3. **Compliance & Risk Management** – Maintaining SOX compliance and documentation standards. 4. **System Uptime Assurance** – Ensuring **zero unplanned downtime** , apart from scheduled maintenance. **Challenges & Solutions** **Challenge** **Proposed Solution** Balancing project vs. support work Collaborate with vendors, prioritize tasks using JIRA Driving workloads off the mainframe Assess applications, engage stakeholders, define migration strategies Ensuring strict SOX compliance Automate evidence tracking, implement self-service solutions **Qualifications** **Minimum Requirements** + **Bachelor’s degree** in **Computer Science, Information Systems, or related field** + **15+ years** experience in **mainframe architecture** , including **z/OS upgrades and hardware uplift** + **5+ years** experience designing **scalable, secure enterprise systems** + Hands-on **development/programming experience** in **COBOL, DB2, IMS, MQ, RACF, and CICS** + Expertise in **automation (REXX, tools) and service optimization** + Familiarity with **cloud service providers** (AWS, Azure, GCP) **Preferred Qualifications** + Strong knowledge of **Hitachi & VTS storage solutions** + Experience in **Broadcom elimination and cost optimization projects** + Expertise in **legacy system modernization approaches ("7 Rs")** + Cloud-based **mainframe modernization strategies** \#LI-LATAM **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) **_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) ._**