Note: The job is a remote job and is open to candidates in USA. TWO95 International, Inc. is seeking an experienced Senior z/OS Systems Administrator to support and maintain a large-scale IBM mainframe environment. The role focuses on z/OS systems administration, security assessment, RACF and USS security, maintenance, upgrades, troubleshooting, compliance alignment, and automation.
Responsibilities
- Perform deep-dive security assessments to identify control gaps and vulnerabilities
- Analyze and translate technical findings into business risk and impact
- Define practical remediation strategies and implementation guidance for engineering teams
- Review and strengthen RACF controls (DATASET, FACILITY, UNIXPRIV, STARTED)
- Evaluate USS security posture (UID/GID, OMVS, POSIX, zFS)
- Assess SMF, audit logs, and control effectiveness
- Partner with stakeholders to ensure sustainable risk reduction and compliance alignment
Skills
- 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
- This 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
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