IBM Mainframe Infrastructure SME

IBM Mainframe Infrastructure SME (CICS / COBOL / IBM Z Series) - London based (99% Remote) - Inside IR35 (No Umbrella fees - PAYE - £450/£600 per day)

The Role:
We are seeking an experienced IBM Mainframe Infrastructure Technical Specialist to support a major UK banking organisation operating on IBM Z Series and above infrastructure.
This is a production stability and support SME role, focused on maintaining and optimising a complex legacy mainframe estate within a regulated banking environment.
You will be working primarily across IBM CICS Transaction Server environments, ensuring continuous availability and performance of mission-critical banking systems.

Key Responsibilities

• Support IBM Z Series mainframe infrastructure in a live banking environment
• Manage CICS regions (TORs, AORs, FORs)
• Maintain and support IBM CICS Transaction Server environments
• Ensure 24x7 system availability and operational resilience
• Troubleshoot and resolve production incidents
• Work with:
  • IBM Db2
  • IBM MQ
• Use JCL, REXX, and Assembler for support and diagnostics
• Maintain high stability across core banking transaction systems

To apply you should have the following skills and experience:

• Strong experience with IBM Z Series / IBM mainframe infrastructure (Z/OS or above)
• Deep expertise in:
  • IBM CICS Transaction Server
  • COBOL
  • IBM Db2
  • IBM MQ
• Strong background in legacy regulated banking environments
• Infrastructure SME experience (not application development focused)
• Proven ability to support and stabilise production mainframe systems

In short:

• Work on critical IBM Z mainframe banking systems
• Highly remote role (99% remote working)
• Long term contract security potential within a major financial institution
• High impact infrastructure SME position

Apply Now
If you’re a Mainframe SME who thrives in production environments and knows how to keep complex CICS estates running smoothly, we’d like to hear from you.


Stuart Graham
Click Recruitment
Stuart.Graham@ClickRecruiting.co.uk