<p>Kforce has a client that is seeking a Mainframe Security Engineer - ACF2 to RACF Migration for a long-term contract remote role.</p> <p>Summary: We're looking for an experienced Mainframe Security Engineer to support a large-scale migration from CA-ACF2 and RC/Secure to IBM Security Server (RACF). This is a high-impact modernization initiative that enhances enterprise security and access management across IBM Z environments. You'll play a key role in planning, migrating, and validating security definitions that protect critical mainframe assets - collaborating with system administrators, application owners, and security teams to ensure a smooth, compliant, and secure transition.</p> <p>Responsibilities:</p> <ul> <li>Lead the migration of CA-ACF2 and RC/Secure for DB2 to IBM Security Server (RACF) </li><li>Migrate and validate security definitions for user/system IDs, datasets, and subsystems (CICS, IMS, DB2) </li><li>Work with teams to export and convert ACF2 security databases at designated cutover points </li><li>Implement and test password propagation solutions to maintain user credentials during migration </li><li>Collaborate across system, network, and application teams to test, document, and promote RACF-based access control </li><li>Execute migration on a sysplex-by-sysplex basis, ensuring minimal disruption to production systems* 5+ years of experience with mainframe security administration on z/OS </li><li>Hands-on expertise with CA-ACF2 and/or RACF (IBM Security Server) </li><li>Strong knowledge of z/OS, CICS, IMS, and DB2 subsystems </li><li>Understanding of security database migration, access control, and password management </li><li>Excellent analytical and troubleshooting skills in large, complex mainframe environments </li></ul> <p>Preferred Skills:</p> <ul> <li>Prior experience executing ACF2-to-RACF migrations or similar z/OS security conversions </li><li>Familiarity with CA-RC/Secure, IMS interfaces, or other IBM Z security tools </li><li>Knowledge of compliance frameworks (e.g., SOX, PCI, or NIST) within mainframe contexts </li><li>Ability to script or automate security administration tasks (REXX, CLIST, or Python on z/OS) </li></ul> <p>Why Join Us:</p> <ul> <li>Contribute to a strategic IBM Z security modernization program impacting thousands of enterprise users </li><li>Work with leading-edge IBM technologies in a large-scale transformation environment </li><li>Collaborate with cross-functional mainframe experts across engineering, operations, and DevSecOps </li><li>Competitive compensation, growth potential, and long-term project stability </li></ul>