We're looking for a Senior Mainframe Developer with deep COBOL expertise to help design, enhance, and modernise our high-volume, business-critical applications. This is a unique opportunity to combine traditional mainframe engineering excellence with modern, AI-first development practices.
What you'll be doing
* Design, develop, and support COBOL and CAP COBOL applications on z/OS, supporting large-scale, high-volume transaction processing
* Maintain and enhance IMS online and batch systems, ensuring high availability, performance, and resilience
* Build and support data processing solutions using DB2, IMS DB, and sequential file structures
* Act as a subject matter expert in mainframe development, helping define coding standards, best practices, and modernisation approaches
* Ensure compliance with internal standards and regulatory obligations across all development activities
* Drive innovation by applying an AI-first approach to automate coding, testing, data mapping, orchestration, and documentation
What you'll bring
* Strong hands‐on experience in COBOL development within large enterprise or banking environments
* Exposure to or experience with CAP COBOL in production systems
* Proven experience working with IMS DB, including data access, schema design, and integration
* Solid understanding of z/OS mainframe environments
* Experience with Endevor for source code management
* Familiarity with modern tooling such as Git and Bitbucket
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