Senior RACF Administrator

MainframeMaster; Valby; Remote; DKK 850,000 - 1,100,000; Full time

Job summary

DXC Technology in Valby, Denmark, seeks a Senior RACF Administrator to manage RACF security across IBM z/OS, conduct access reviews, and support audits. You will work with zSecure, MFA, certificates, and security evidence to ensure compliance and secure mainframe environments.

The role requires expert RACF experience, strong problem-solving and collaboration with Cybersecurity and IT teams, with a focus on preventing unauthorized access and maintaining change-management discipline.

Qualifications

• Extensive RACF administration on IBM z/OS.
• Experience with zSecure for auditing and reporting.
• Experience implementing MFA in mainframe environments.
• Strong knowledge of access reviews and SoD controls.

Responsibilities

• Administer and maintain RACF security environments on IBM z/OS.
• Create, modify, disable, and remove RACF IDs and groups per procedures.
• Manage RACF groups, permissions, ownership, authorities, and profiles.
• Administer RACF dataset and resource profiles for apps and systems.
• Perform regular RACF access reviews and privileged-access reviews.
• Investigate violations and unauthorized access attempts.
• Use zSecure for security analysis, reporting, and compliance.
• Support MFA deployment and mainframe certificate lifecycle.
• Coordinate with multiple teams and support audits with evidence.

Skills

Security policy

Access reviews

Audit evidence

Change management

Tools

RACF

zSecure

MFA

Mainframe certificates

Job description

# Senior RACF AdministratorDXC TechnologyFull-timeDNK - VALBY0 viewsPosted October 2, 2026## Job DescriptionJob 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.Recruitment fraud is a scheme in which fictitious job opportunities are offered to job seekers typically through online services, such as false websites, or through unsolicited emails claiming to be from the company. These emails may request recipients to provide personal information or to make payments as part of their illegitimate recruiting process. DXC does not make offers of employment via social media networks and DXC never asks for any money or payments from applicants at any point in the recruitment process, nor ask a job seeker to purchase IT or other equipment on our behalf. More information on employment scams is available here.