Mainframe Logical Security Engineer

Location: Phoenix, AZ (Hybrid – 3 Days Onsite)
Duration: 6+ Months
Interview: Video
Visa: Open to All Work Authorizations

Required Skills

• 5+ years of experience in IBM Mainframe (z/OS) environments

• Strong hands-on experience with RACF administration (ACF2 or Top Secret experience is a plus)

• Expertise in user and group management

• Experience managing dataset and subsystem security

• Strong understanding of z/OS security architecture and access control models

• Experience conducting security audits, access reviews, and compliance assessments

• Experience monitoring and analyzing security logs

• Excellent troubleshooting, analytical, and problem-solving skills

Preferred Qualifications

• Experience with ACF2 or CA Top Secret

• Familiarity with SIEM tools such as Splunk, QRadar, or similar platforms

• Experience supporting enterprise audit and compliance initiatives

• Exposure to IAM, SSO, and MFA solutions

• Automation or scripting experience with REXX, Python, or Shell scripting

• Experience working in financial services or other regulated environments

Key Responsibilities

• Administer and maintain RACF and mainframe security controls

• Manage user access, roles, groups, and permissions across z/OS environments

• Perform security audits, access reviews, and compliance reporting

• Monitor security events, investigate issues, and support remediation efforts

• Implement and maintain dataset, subsystem, and resource security policies

• Collaborate with infrastructure, IAM, and compliance teams to ensure secure operations

• Support audit readiness and regulatory compliance initiatives