6 of 6 Mainframe Developer Jobs in London

LocationLondon, United Kingdom# Mainframe Developer – CICS/z/OS at N Consulting LtdLocationLondon, United KingdomSalary£300 - £350/dayJob TypeContractDate PostedApril 30th, 2026Apply Now**Job Description**Infosys is seeking an experienced **Mainframe Developer** with strong expertise in **IBM Mainframe technologies**, including **CICS, z/… VSAM**, to support enterprise-critical banking and financial applications. The candidate will work on development, enhancement, maintenance, and modernization of legacy mainframe systems while ensuring system stability, scalability, and performance.**Key Responsibilities*** Develop, maintain, and enhance applications on **IBM z/OS** platform* Design and code programs using **COBOL ...

Consulting Limited is seeking a Mainframe Developer with experience in IBM Mainframe technologies, including CICS, z/OS, and COBOL, to work on critical banking applications. The role involves development, maintenance, and optimization of legacy systems, with a focus on performance tuning and production support. Candidates should ...

IZOT product line includes BMC’s Intelligent Z Optimization & Transformation products, which help the world’s largest companies to monitor and manage their mainframe systems. The modernization of mainframe is the beating heart of our product line, and we achieve this goal by developing products that improve … developer experience, the mainframe integration, the speed of application development, the quality of the code and the applications’ security, while reducing operational costs and risks. We acquired several companies along the way, and we continue to grow, innovate, and perfect our solutions on an ongoing basis. BMC Software ...

Greetings...!!! We have urgent position Mainframe Consultant/Developer @ London or Sheffield, UK – Hybrid- Contract, could you please find the JD below and Role: Mainframe Consultant/Developer Location: London or Sheffield Type of role: Contract (Initially 6 months) Mode of Work: Hybrid … production support and add safeguards. Document program logic, job flows and test evidence for the team. Requirements Strong experience in Endevor Strong experience in Mainframe Working knowledge of COBOL and JCL #J-18808-Ljbffr ...

The Role Software Engineer will be part of the Engineering Team in Core Banking Platform, who will be responsible to building new software and making changes to the existing ones as per the business requirement. ...

Consult is urgently seeking a Mainframe Consultant/Developer for a hybrid contract role based in London or Sheffield. The assignment is initially six months with 2–3 days on-site each week. You will work with datasets, VSAM files, DB2 tables, COBOL and JCL, create ...