Manager Infrastructure Services

DXC Technology Company; Valby; On-site; DKK 900,000 - 1,100,000; Full time

Job summary

DXC Technology Company seeks an experienced mainframe security specialist to administer RACF on IBM z/OS, manage access controls, and perform entitlement reviews.

You will implement MFA, monitor certificates, support security audits, and coordinate remediation with IAM, PKI, risk, and audit teams while maintaining thorough security documentation. This hands-on position also involves troubleshooting authentication issues across RACF and zSecure.

Qualifications

• Experience administering RACF on IBM z/OS.
• Proven ability to perform entitlement and privileged-access reviews.
• Familiarity with MFA and certificate management.
• Experience supporting internal/external security audits.

Responsibilities

• Administer RACF security environments on IBM z/OS.
• Create, modify, and manage RACF IDs and groups.
• Conduct regular access and entitlement reviews.
• Use zSecure for security analysis and reporting.
• Support MFA deployment and certificate lifecycle.
• Coordinate with audit and IAM teams to ensure compliance.
• Prepare evidence for audits.

Skills

RACF administration

Mainframe security

z/OS knowledge

Access reviews

Certificate management

MFA implementation

Tools

IBM zSecure

z/OS

Certificates management

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.