RACF z/OS Security Expert
Job in
Frisco, Collin County, Texas, 75034, USA
Listed on 2026-02-16
Listing for:
Apptad Inc
Full Time
position Listed on 2026-02-16
Job specializations:
-
IT/Tech
Cybersecurity, Information Security, IT Consultant, Security Manager
Job Description & How to Apply Below
Role :
- RACF z/OS Security Expert
Location :
- Frisco, TX
RACF z/OS Security Expert to manage and maintain security infrastructure across our mainframe environment, with emphasis on security administration and certificate lifecycle management.
Key Responsibilities RACF Security Administration- Design, implement, and maintain RACF security policies and user access controls
- Manage user IDs, groups, and resource profiles (datasets, transactions, programs)
- Conduct security audits, access reviews, and incident response
- Create compliance documentation and audit reports
- Manage digital certificates within RACF and z/OS using RACDCERT
- Plan and execute certificate renewals to prevent service disruptions
- Monitor certificate expiration dates and maintain renewal schedules
- Generate CSRs and coordinate with Certificate Authorities
- Install, update, and validate SSL/TLS certificates for z/OS applications
- Maintain certificate key rings and trust chains
- Troubleshoot certificate-related connectivity issues
- Implement security controls for CICS, DB2, IMS, MQ, and other z/OS subsystems
- Collaborate with CICS, DB2, MQ, and application teams on security requirements and implementations
- Configure Started Task and Surrogate security
- Monitor SMF security records and investigate anomalies
- Ensure compliance with industry standards (PCI-DSS, SOX, HIPAA)
- Support internal and external security audits
- Participate in disaster recovery planning
- 7+ years of hands-on RACF administration experience in z/OS environments
- Strong expertise in RACF commands, utilities, and best practices
- Proficiency with RACDCERT for digital certificate management
- Experience with SSL/TLS protocols and PKI infrastructure
- Strong knowledge of ISPF, TSO, JCL, and REXX
- Familiarity with z/OS subsystems security (CICS, DB2, IMS, MQ)
- Understanding of SMF record analysis and security monitoring
- Deep understanding of mainframe security concepts and threats
- Knowledge of security frameworks and regulatory requirements
- Experience with security incident response
- Strong analytical and problem-solving abilities
- IBM RACF or mainframe security certification
- Experience with zSecure or similar security tools
- Knowledge of encryption technologies (ICSF, z/OS Crypto)
- Security automation and scripting experience
- Relevant certifications (CISSP, CISM)
On-call rotation required Occasional off-hours maintenance
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