Senior RACF Administrator

DXC Technology Company; København; On-site; DKK 550,000 - 750,000; Full time

Job summary

DXC Technology is seeking a Mainframe Security Specialist to administer RACF on IBM z/OS, manage identities, and oversee privilege controls. The role includes conducting access reviews and coordinating with security and audit teams.

The successful candidate will implement MFA, monitor compliance, and maintain security documentation while collaborating with cross-functional teams to strengthen mainframe defense.

Qualifications

• Experience administering RACF on IBM z/OS environments.
• Proficient in security auditing and remediation.
• Familiar with MFA implementation for mainframe access.
• Ability to work with audit teams and document evidence.

Responsibilities

• Adminsiter and maintain RACF security on IBM z/OS platforms.
• Create/modify RACF IDs and groups per procedures.
• Manage RACF resources, permissions, and privilege reviews.
• Perform periodic access and entitlement reviews.

Skills

RACF administration

Mainframe security

Auditing & compliance

Change management

Cross-team collaboration

Tools

IBM z/OS

IBM RACF

zSecure Audit

Job description

Job Description

Key Responsibilities

• Administer and maintain IBM RACF security environments across IBM z/OS platforms.
• Create, modify, disable, and remove RACF user IDs and group IDs in accordance with approved access procedures.
• Manage RACF groups, permissions, ownership, authorities, and resource profiles.
• Administer RACF dataset profiles and resource profiles for applications, started tasks, transactions, and system resources.
• Manage and review RACF privileged authorities including SPECIAL, OPERATIONS, AUDITOR, and other elevated permissions.
• Perform regular RACF access reviews, entitlement reviews, and privileged-access reviews.
• Identify and remediate excessive, inappropriate, inactive, orphaned, or unauthorized access.
• Use IBM zSecure for RACF administration, security analysis, reporting, auditing, and compliance monitoring.
• Perform security assessments using zSecure Audit and generate reports for security and compliance requirements.
• Analyze RACF and z/OS security violations and investigate unauthorized access attempts.
• Support internal and external security audits by preparing RACF, zSecure, and z/OS security evidence and reports.
• Track audit findings, coordinate remediation activities, and provide evidence for audit closure.
• Support implementation and administration of Multi-Factor Authentication (MFA) for mainframe environments.
• Troubleshoot authentication and authorization issues involving RACF, MFA, and mainframe applications.
• Manage the lifecycle of mainframe digital certificates, including certificate inventory, renewal, replacement, installation, validation, and retirement.
• Coordinate certificate replacements and renewals with application, infrastructure, PKI, network, and security teams.
• Manage RACF key rings and certificate-related security configurations where applicable.
• Monitor certificate expiration dates and proactively coordinate renewals to prevent production outages.
• Support security hardening and continuous improvement of IBM z/OS environments.
• Investigate RACF authorization failures, authentication problems, security violations, and mainframe security incidents.
• Perform periodic user and entitlement certification activities.
• Support Segregation of Duties (SoD) and privileged-access controls.
• Implement RACF and mainframe security changes through formal Change Management processes.
• Develop and maintain RACF, zSecure, MFA, certificate-management, and security-operation procedures.
• Collaborate with Mainframe Operations, System Programmers, Application Teams, Cybersecurity, IAM, PKI, Risk, Compliance, and Audit teams.
• Provide security recommendations and technical support for mainframe applications and infrastructure.
• Maintain accurate security documentation, audit evidence, operational procedures, and technical runbooks.

At DXC Technology, we believe strong connections and community are key to our success. Our work model prioritizes in-person collaboration while offering flexibility to support wellbeing, productivity, individual work styles, and life circumstances. We’re committed to fostering an inclusive environment where everyone can thrive.