Mainframe SME

Square One Resources is hiring an experienced Mainframe SME to join a large-scale modernization programme for a client operating in the financial services sector. The programme focuses on modernizing complex legacy and mainframe environments while introducing technologies such as Generative AI, cloud transformation, and data migration.

• Several years of professional experience in mainframe environments
• Strong hands-on experience with COBOL
• Strong knowledge of JCL
• Experience with Assembler
• Good understanding of mainframe file structures and copybooks
• Experience with SORT and IDCAMS
• Experience with CA-7 and/or Control-M
• Strong understanding of legacy application environments and mainframe architecture
• Ability to analyse complex legacy systems and dependencies
• Experience supporting or participating in modernization initiatives
• Understanding of AI/ML concepts and their potential application in software or legacy modernization
• Understanding of AI agent workflows
• Good analytical and problem-solving skills
• Ability to communicate effectively with technical stakeholders
• Good command of English

• Provide technical expertise across complex mainframe environments
• Analyse and maintain existing mainframe applications and processes
• Work with COBOL-based applications and mainframe programs
• Analyse and work with JCL and mainframe job scheduling
• Work with mainframe file structures, datasets, and copybooks
• Support data and application analysis as part of modernization initiatives
• Work with SORT and IDCAMS utilities
• Work with enterprise job scheduling tools such as CA-7 or Control-M
• Analyse dependencies between legacy applications, jobs, and data structures
• Support the assessment and modernization of existing mainframe solutions
• Collaborate with architects, developers, and other technical specialists
• Contribute mainframe expertise to broader legacy modernization initiatives
• Explore and support the use of AI/ML technologies in modernization activities
• Contribute to the design or implementation of AI-assisted agent workflows