Mainframe Security Analyst

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