IBM Mainframe Systems Engineer

<p>We are seeking an experienced IBM Mainframe Systems Engineer to support the engineering, modernization, and optimization of enterprise IBM Z environments. This role requires deep technical expertise across the mainframe technology stack, including system architecture, platform upgrades, performance tuning, security, and modernization initiatives. The ideal candidate will play a key role in ensuring platform stability, compatibility, scalability, and operational excellence within mission-critical environments. </p> <h5>Role and Responsibilities </h5> <p>Lead z/OS platform upgrade and modernization initiatives, including planning, testing, implementation, and stabilization activities.<br>Provide engineering support across core IBM Z technologies, including z/OS, z/VM, DB2 for z/OS, CICS TS, IMS, and IBM MQ.<br>Perform technical assessments, dependency analysis, and compatibility validation for system upgrades and infrastructure changes.<br>Analyze and optimize system performance using SMF, RMF, and other monitoring tools to support tuning and capacity planning efforts.<br>Design, configure, and maintain IBM MQ Queue Manager environments, including TLS enablement and secure communications.<br>Support mainframe storage, recovery, virtualization, and networking environments, including SNA, VTAM, and TCP/IP technologies.<br>Administer and maintain mainframe security controls utilizing RACF and ACF2, ensuring compliance and access governance requirements are met.<br>Develop and maintain automation processes using JCL, REXX, CLIST, TSO/ISPF, and related utilities.<br>Collaborate with infrastructure, application, security, and operations teams to support modernization and system reliability initiatives.<br>Troubleshoot complex platform issues and provide root-cause analysis for performance, availability, and integration challenges. </p> <h5>Required Qualifications </h5> <p>8+ years of experience supporting IBM Mainframe systems engineering and platform administration.<br>Strong expertise in IBM Z technologies, including z/OS, z/VM, DB2 for z/OS, CICS TS, and IMS.<br>8+ years of experience with IBM MQ for z/OS, including Queue Manager architecture, administration, and TLS configuration.<br>8+ years of experience with mainframe security administration and engineering using RACF and ACF2.<br>Experience performing system upgrades, migrations, performance tuning, and modernization initiatives within enterprise environments.<br>Strong analytical, troubleshooting, and problem-solving skills.<br>Excellent communication and collaboration skills. </p> <h5>Preferred Qualifications </h5> <p>Experience with performance monitoring and capacity planning using SMF and RMF.<br>Proficiency with JCL, REXX, CLIST, TSO/ISPF, and automation scripting.<br>Experience with enterprise scheduling tools such as CA-7 and Control-M.<br>Knowledge of mainframe networking technologies including SNA, VTAM, and TCP/IP.<br>Familiarity with highly regulated, large-scale enterprise environments. </p>