ITTConnect is seeking a Senior Mainframe Storage Engineer (IBM zOS systems) to work remotely for a client in the US. This is a potentially long term position with a client that is a global leader in consulting, digital transformation, technology and engineering services present in nearly 50 countries. This client is working with one of the major players in the mainframe technology and tools area.Job location: Remote, work from home anywhere in Brazil.All interviews will be in English only (must be professionally fluent).We are seeking an experienced Mainframe System Engineer to join our team and provide operational, consultancy, and migration support in a complex IBM Z environment. The ideal candidate will have deep expertise in mainframe operations, storage administration, and migration projects involving IBM and CA products. This role requires strong technical proficiency, problem-solving skills, and the ability to collaborate effectively across teams to ensure seamless system operations and migrations.Job responsibilities:Manage and support mainframe operations, ensuring high availability and performance.Provide consultancy and technical assistance for migration projects Implement and configure IBM storage solutions such as DFSMSrmm, DFSMShsm, and related advanced audit and reporting tools.Assist with installation and configuration of IBM OMEGAMON for Storage and other monitoring tools.Develop and maintain JCL scripts, REXX, and Assembler programs for automation and operational efficiency.Utilize TSO and ISPF for system management and troubleshooting.Collaborate with storage administrators to assess migration impacts and provide training/documentation.Ensure compliance with system standards and best practices for SMP/E and z/OS environments.Key skills:Mainframe Operations Expertise: Minimum 5+ years in mainframe operations, service, or support roles.Proficiency in TSO, ISPF, and JCL.Ability to write REXX and Assembler programs.Experience with DFSMSrmm and/or CA-1 Tape Management System.Hands-on experience with IBM tools such as: >> IBM OMEGAMON for Storage >> IBM Advanced Audit and Reporting for DFSMShsm >> IBM Advanced Catalog Management (ACM) >> IBM Advanced Allocation Management (AAM)Ability to migrate tools, including the following, within mainframe systems >> CA-1 to DFSMSrmm migration (configuration, installation, JCL code, runtime parameters). >> CA FAVER to IBM Advanced Catalog Management migration (customized JCL creation). >> IBM Global Resource Serialization (GRS) migration (training, PARMLIB member creation, operational considerations). >> CA Allocate to IBM Advanced Allocation Management migration (installation, configuration, training).Strong written and verbal communication skills for documentation and stakeholder interaction.Preferred Skills and Proficiencies:Knowledge of IBM Z system operation and configuration, including SMP/E.Familiarity with competing products and migration strategies.Experience with Storage Administration on IBM Z.Migration experience across IBM and CA products with ability to create customized JCL and runtime parameters.