System Programmer - Mainframe (Z/Os) Lisboa

System Programmer - Mainframe (Z/Os)
Lisboa
Lisboa, Lisboa, Portugal

Emagine is looking for an experienced System Programmer (z/OS) to join a
- term project with one of our international clients in the insurance sector . This is a strategic opportunity to be part of a release management and infrastructure transformation , contributing to the modernization of core environments and the decommissioning of legacy tooling.

Your main responsibilities:

• Install, configure, and maintain z/OS software and subsystems (DB2, CICS, IMS, RACF, compilers, communication subsystems, etc. ).
• Perform system performance tuning , capacity management, and resource optimization (CPU, memory, I/O).
• Ensure system security and compliance , supporting RACF and other access control mechanisms.
• Support and monitor infrastructure stability and availability , ensuring the mainframe environment is ready for
  - critical applications.
• Collaborate with release management teams to align infrastructure and tooling with modernization initiatives.
• Provide expertise in middleware and operating system components , ensuring smooth integration with applications.
• Contribute to knowledge