Mainframe Security Analyst
£450–£500 p/d Inside IR35
Remote – 1 day per month required on-site in Welwyn Garden City
6 month contract
Looking for an experienced Mainframe Security Analyst to join a dedicated Mainframe RACF Security team. This role focuses on protecting critical mainframe environments, supporting security initiatives, managing access controls and ensuring effective security monitoring.
Key Responsibilities:
- Manage and action RACF access requests and changes
- Support users with access queries and issues
- Monitor daily security tasks, controls, and system alerts
- Administer RBAC, PAM, and privileged access on the mainframe
- Maintain documentation including runbooks, processes, and procedures
- Support audits, evidence gathering, and remediation activities
- Assist with incidents, projects and wider security initiatives
- Analyse, design and implement enhancements to mainframe security
- Perform testing for new security or system modifications
- Manage and maintain RACF digital certificates
- Collaborate with IT and business teams to resolve access-related issues
Required Experience:
- Strong RACF and z/OS expertise
- Experience with IBM zSecure (z/Alert, Command Verifier, Access Monitor, CARLA)
- Skilled with mainframe tools such as JCL, REXX, CLIST, ISPF
- Solid understanding of mainframe security principles
- Experience with RBAC, ICFR/SOX controls, and RRSF
- Strong documentation skills and lateral problem-solving ability
- Ability to communicate clearly with technical and non-technical teams
- Experience with digital certificate management
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