Freelance z/OS Mainframe Systems Engineer - Modernisation Program

Freelance z/OS Mainframe Systems Engineer - Modernisation Program

We are seeking experienced freelance z/OS Mainframe Systems Engineers to join a newly established team focused on the modernisation of Mainframe environments.

This is a unique opportunity to contribute from the very beginning of the program-helping to define technical strategy, design modernisation solutions, and work at the intersection of traditional z/OS platforms and next-generation digital capabilities.

As part of this exciting initiative, you will play a key role in transforming large-scale, mission-critical systems, while working within a structured, collaborative environment.

Key Responsibilities

• Administer and optimise z/OS systems

• Work with JCL, Cobol, CICS, IMS, and DB2 environments

• Support the modernisation of workloads, including APIs, containers, and hybrid cloud integrations

• Drive continuous improvement in performance, scalability, and security

• Collaborate with a cross-functional team to deliver high-impact modernisation projects

What's on Offer

• A freelance engagement with an attractive, competitive day rate

• The chance to shape your role within a brand-new team, tailored to your skills and experience

• Hybrid working model, with on-site presence in Paris, Montpellier, Lyon, or Lille

• A stimulating environment where you'll develop your expertise in Mainframe modernisation and contribute to a forward-looking transformation program

Apply Now

If you're ready to put your z/OS expertise to work on a high-impact modernisation program as a freelancer, we'd love to hear from you.