Senior RACF Administrator

Job Description:
About DXC
DXC helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures and ensuring security and scalability across public, private and hybrid clouds. The world’s largest companies and public sector organizations trust DXC to deploy services to drive new levels of performance, competitiveness, and customer experience across their IT estates.

About the Team – Infrastructure Services
DXC Global Infrastructure Services (GIS) manages and modernizes IT infrastructure for the world's largest enterprises through agentic, platform-led operations. We deliver cloud, security, workplace, infrastructure and business-process services that shift operations from reactive support to proactive, outcome-driven service delivery at scale, with human-in-the-loop governance.

About the Role
The Senior RACF Administrator plays a critical role in safeguarding enterprise mainframe environments by administering and maintaining IBM RACF security across IBM z/OS platforms. This position is central to ensuring the integrity, availability, and compliance of mainframe security controls, serving as a key point of contact for audit, risk, and compliance activities related to mainframe security.
In this role, you will manage the full lifecycle of digital certificates, investigate and resolve security violations and authentication issues, and implement security changes through formal change management processes. You will work closely with cross-functional teams including Mainframe Operations, System Programmers, Application Teams, Cybersecurity, IAM, PKI, Risk, Compliance, and Audit to ensure robust, well-governed mainframe security practices.
You will also support LDAP services and their integration with RACF and broader enterprise identity management solutions, providing technical expertise and security recommendations that strengthen the organization's overall security posture for mainframe applications and infrastructure.

Key Responsibilities

- Administer and maintain IBM RACF security environments across IBM z/OS platforms.

- Track audit findings, coordinate remediation activities, and provide evidence for audit closure.

- Manage certificates. Including monitoring, renewal, implementation, and lifecycle management.

- Investigate and Resolve RACF authorization failures, authentication issues, security violations, and mainframe security incidents.

- Implement RACF and mainframe security changes through formal Change Management processes.

- Collaborate with Mainframe Operations, System Programmers, Application Teams, Cybersecurity, IAM, PKI, Risk, Compliance, and Audit teams.

- Administer and support LDAP services and their integration with RACF and enterprise identity management solutions.

- Provide security recommendations and technical support for mainframe applications and infrastructure.

Basic Qualifications

- Experience administering and maintaining IBM RACF security environments across IBM z/OS platforms

- Experience with certificate management, including monitoring, renewal, implementation, and lifecycle management

- Experience investigating and resolving RACF authorization failures, authentication issues, and security violations

- Experience implementing security changes through formal Change Management processes

- Experience supporting LDAP services and their integration with RACF and enterprise identity management solutions

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