Mainframe & AS/400 Security Administrator

Mainframe & AS/400 Security Administrator 
Location: Remote
Job Type: Contract
Duration: 12+ Months

Job Summary

We are seeking an experienced Mainframe & AS/400 Security Administrator to provide day-to-day security administration and managed security services

The ideal candidate will have strong hands-on experience with CA Top Secret (TSS),  QSECOFR, Fortra Encryption, Pervasive Encryption, PAM/IAM, certificate management, security auditing, reporting, and incident management.

This role will be responsible for maintaining secure access, supporting security controls, managing encryption and certificates, conducting audits, and resolving security incidents across enterprise mainframe environments.

Key Responsibilities

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  Manage user accounts, access rights, permissions, roles, and security profiles.

  
  


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  Provide hands-on administration of CA Top Secret (TSS).

  
  


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  Manage AS400 security, including QSECOFR and related security controls.

  
  


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  Support PAM/IAM activities and access governance.

  
  


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  Configure and support Fortra Encryption solutions.

  
  


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  Support z/OS Pervasive Encryption and related security requirements.

  
  


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  Manage digital certificates, certificate lifecycle, renewals, and troubleshooting.

  
  


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  Perform security auditing, monitoring, reporting, and compliance activities.

  
  


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  Investigate and resolve security incidents and access-related issues.

  
  


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  Maintain security documentation, procedures, and operational reports.

  
  


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  Collaborate with infrastructure, application, security, and operations teams.

  
  


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  Support security reviews, risk assessments, and remediation activities.

  
  


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  Provide production support and participate in after-hours, night, and weekend support as required.

  
  

Required Skills & Experience

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  Strong hands-on experience with CA Top Secret (TSS).

  
  


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  Strong experience security administration.

  
  


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  Hands-on experience with AS400 security.

  
  


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  Experience with QSECOFR security administration.

  
  


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  Experience with Fortra Encryption.

  
  


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  Experience with z/OS Pervasive Encryption.

  
  


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  Knowledge of PAM/IAM concepts and access management.

  
  


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  Experience with certificate management.

  
  


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  Strong understanding of security auditing and reporting.

  
  


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  Experience handling security incidents and access-related issues.

  
  


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  Strong troubleshooting and problem-solving skills.

  
  


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  Ability to work independently in a remote environment.