Senior z/OS Mainframe Programmer - Contract

We're building a brand-new Mainframe team for a leading financial services client and are looking for experienced z/OS Developers to join the mission.

This is a fantastic opportunity to shape the direction of a new technical team, working on mission-critical systems, compliance-driven initiatives (eg Swift, SIC, FTR ), and modernisation efforts.

What You'll Bring:

• Extensive knowledge of the IBM z/OS ecosystem
• Familiarity with tools like IDz, Endevor, or equivalent
• Background in banking or financial services preferred
• Agile/Scrum delivery mindset

Nice to Have:

• Experience with REXX, Assembler, or Scripting
• Knowledge of API enablement or Mainframe/cloud integration
• Strong troubleshooting and optimisation skills

You'll collaborate with engineers, analysts, and SMEs to build secure, high-performing systems, while contributing to best practices and team growth.