Demo

Mainframe Administrator

Cynet Systems
San Antonio, TX Contractor
POSTED ON 4/23/2026
AVAILABLE BEFORE 5/23/2026
We are looking for Mainframe Administrator for our client in San Antonio, TX
Job Title: Mainframe Administrator
Job Location: San Antonio, TX
Job Type: Contract
Job Overview:

Responsibilities:

  • Manage and administer IBM z/OS operating systems and mainframe infrastructure.
  • Perform installation, configuration, maintenance, and upgrades of z/OS environments.
  • Lead mainframe system sustainment activities including version upgrades and patching.
  • Ensure system security, compliance, and data protection using enterprise security protocols.
  • Administer and maintain mainframe security tools such as Top Secret (TSS).
  • Monitor system performance, troubleshoot issues, and implement optimizations.
  • Collaborate with infrastructure and cross-functional teams to resolve complex system issues.
  • Support system IPL processes and ensure system availability and stability.
  • Maintain and support key mainframe subsystems and tools.
  • Ensure adherence to enterprise standards, policies, and regulatory requirements.

Required Skills & Experience:

  • Minimum 8 years of experience in mainframe system administration.
  • Strong expertise in IBM z/OS operating systems and infrastructure.
  • Hands-on experience with system installation, configuration, and maintenance.
  • Deep knowledge of mainframe security, compliance, and data protection practices.
  • Experience with Top Secret (TSS) or similar security frameworks.
  • Strong troubleshooting and problem-solving skills in complex environments.
  • Ability to collaborate effectively with infrastructure and technical teams.

Technical Skills:

  • z/OS
  • CICS
  • DB2
  • Easytrieve
  • ChangeMan
  • Endevor
  • MQ
  • ESP
  • dSeries
  • Systemware
  • Content Cloud
  • System IPL

Additional Requirements:

  • This role focuses on mainframe administration and infrastructure (not development or testing).

Hourly Wage Estimation for Mainframe Administrator in San Antonio, TX
$37.00 to $49.00
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