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. Job Summary: We are looking for a dedicated and detail-oriented Mainframe Support Engineer to provide production support and manage small-scale changes for our Mainframe Replatforming (RE) initiative. This role is critical in ensuring the stability and performance of replatformed workloads and services, with a strong focus on operational excellence and timely issue resolution. The position requires availability for out-of-hours support from Monday to Saturday. Key Responsibilities: Deliver production support for the Mainframe Replatforming (RE) environment, ensuring high availability and performance. Implement and validate small changes and enhancements to the replatformed components and services. Monitor system health, job execution, and data flows across replatformed workloads. Troubleshoot and resolve incidents, ensuring minimal impact to business operations. Provide out-of-hours support (Monday to Saturday), typically concluding by midnight Irish time. Collaborate with development, infrastructure, and DevOps teams to ensure seamless integration and deployment. Maintain accurate documentation for support procedures, change logs, and incident reports. Contribute to continuous improvement initiatives and automation of support tasks. Required Skills & Experience: Strong experience in Mainframe technologies (COBOL, JCL, DB2, VSAM, CICS). Understanding of replatforming concepts, including migration of workloads from legacy mainframe systems to modern platforms. Hands-on experience with batch job monitoring, scheduling tools (e.g., Control-M, CA7), and incident management. Ability to work independently and manage out-of-hours support responsibilities. Strong analytical and problem-solving skills. Familiarity with ITIL processes and service management tools (e.g., ServiceNow). **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) **_._** \#LI-EMEA