Sr z/OS Systems Administrator
TWO95 International, Inc
Job Description
Our Client is seeking an experienced Senior z/OS Systems Administrator to support and maintain a large-scale IBM mainframe environment. The ideal candidate will be a senior-level z/OS professional with deep hands-on expertise in SMP/E, REXX scripting, and z/OSMF , along with strong knowledge of z/OS systems administration, maintenance, upgrades, troubleshooting, and automation.
\n \n• Perform deep-dive security assessments to identify control gaps and vulnerabilities
\n• Analyze and translate technical findings into business risk and impact
\n• Define practical remediation strategies and implementation guidance for engineering teams
\n• Review and strengthen RACF controls (DATASET, FACILITY, UNIXPRIV, STARTED)
\n• Evaluate USS security posture (UID/GID, OMVS, POSIX, zFS)
\n• Assess SMF, audit logs, and control effectiveness
\n• Partner with stakeholders to ensure sustainable risk reduction and compliance alignment
\n \nThis position requires an individual who can work independently, troubleshoot complex mainframe system issues, perform system-level maintenance and upgrades, and develop automation to improve the reliability and efficiency of the z/OS environment.
Vacancy posted 5 days ago
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