HIRING: Senior Mainframe System Administrator

Uptown, Taguig City (Hybrid – 2x onsite/week)

Morning Shift | 

1 Headcount | Job Req ID: ATCP-1223290-S394211

About the Role:

We’re hiring a Senior Mainframe System Administrator to manage and maintain enterprise-level mainframe systems. The role ensures stability, performance, and security of IBM z/OS and AS400 environments while supporting modernization initiatives and mentoring junior staff.

Key Responsibilities:

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  Administer and maintain IBM z/OS and AS400 (IBM iSeries) systems.

  
  


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  Perform system monitoring, capacity planning, and performance tuning.

  
  


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  Manage backups, disaster recovery, and system security.

  
  


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  Handle batch scheduling, patching, and firmware updates.

  
  


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  Work with application/network teams for troubleshooting and integration.

  
  


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  Maintain detailed documentation of system configurations and changes.

  
  


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  Support incident response and root cause analysis.

  
  


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  Lead and guide team members, promoting skill development.

  
  

Qualifications:

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  Bachelor’s degree in Computer Science, Information Systems, or related field.

  
  


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  5+ years experience in Mainframe System Administration.

  
  


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  Strong knowledge of IBM z/OS, AS400, CICS, VSAM, and monitoring tools.

  
  


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  Familiar with ITIL processes and change management.

  
  


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  Excellent analytical, problem-solving, and communication skills.

  
  


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  Must not be a former or current Accenture employee.

  
  


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  Not a job hopper (at least 1-year tenure per company).

  
  


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  Must be a resident of the Philippines and eligible to work locally.

  
  

Preferred Skills:

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  IBM Certified System Administrator – z/OS or AS400.

  
  


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  Experience in mainframe modernization, virtualization, or cloud integration.

  
  


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  Familiar with Control-M, CA-7, or other job scheduling tools.

  
  


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  Exposure to DevOps practices in legacy environments.

  
  

Key Skills:

Mainframe Administration | IBM z/OS | AS400 | CICS | VSAM | ITIL | Capacity Planning | Disaster Recovery | Security Management | Performance Tuning

Send your CV to: valentina.gratitude.recruit@gmail.com

Subject: Senior Mainframe System Administrator – Taguig (Hybrid)