Nexasphere is seeking a seasoned Mainframe WebSphere MQ & z/OS Systems Programmer to support, maintain, and upgrade enterprise-scale mainframe environments. The role emphasizes stability, security, and performance of WebSphere MQ on z/OS, with involvement in RACF, automation, storage, monitoring, and subsystem upgrades. The ideal candidate brings hands-on experience in complex multi-LPAR environments and has supported major financial institutions and large enterprise clients in high-availability