Mainframe Security Engineer

Job Description – Mainframe Security Engineer Location – Phoenix, AZ The Role We are seeking a skilled Mainframe Logical Security Engineer to design, implement, and manage security controls across IBM z/OS environments. The role ensures the confidentiality, integrity, and availability of enterprise systems and data by enforcing robust access controls and complying with regulatory requirements. This role requires employees to live in or around the Phoenix, AZ area. You will be responsible to be onsite 3 days a week. We will consider candidates who are willing to relocate to the area. Responsibilities Administer and maintain RACF security environment across z/OS systems Create, modify, and revoke: User IDs Groups Resource profiles Dataset and subsystem access permissions Implement and maintain least-privilege access controls for: Datasets Applications (CICS, DB2, IMS, MQ) System resources Security Controls & Compliance Configure and maintain security policies aligned with enterprise standards Perform periodic access reviews, audits, and compliance checks Support regulatory compliance (e.g., SOX, PCI, HIPAA where applicable) Implement data protection controls and access monitoring mechanisms Analyze security logs and reports: SMF records, RACF reports, Access violations, Unauthorized access attempts, Security incidents Troubleshoot and resolve: RACF-related abends or access issues Security Architecture & Integration Secure mainframe subsystems and integrations: CICS, DB2, IMS, MQ, TCP/IP, USS Support integration with: Enterprise IAM solutions, Single Sign-On (SSO) / MFA (where applicable) Define and maintain RACF classes, profiles, and rules for system-wide protection Encryption & Advanced Security Support: Digital certificates, TLS/SSL configuration, ICFS (crypto services) at a high level Ensure secure key management and encryption practices Required Qualifications Strong hands-on experience with RACF administration on z/OS Deep knowledge of RACF profiles, classes, and dataset security User/group management and access control models Experience with SMF data analysis Security reporting and audit tools Strong understanding of z/OS security concepts and system internals #J-18808-Ljbffr